<article>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#article09_12_09_1625237</id>
	<title>NASA Tests Flying Airbag</title>
	<author>samzenpus</author>
	<datestamp>1260385800000</datestamp>
	<htmltext>coondoggie writes <i>"NASA is looking to reduce the deadly impact of helicopter crashes on their pilots and passengers with what the agency calls <a href="http://www.networkworld.com/community/node/48879">a high-tech honeycomb airbag</a> known as a deployable energy absorber. So in order to test out its technology NASA dropped a small helicopter from a height of 35 feet to see whether its deployable energy absorber, made up of an expandable honeycomb cushion, could handle the stress.  The test crash hit the ground at about 54MPH at a 33 degree angle, what NASA called a relatively severe helicopter crash."</i></htmltext>
<tokenext>coondoggie writes " NASA is looking to reduce the deadly impact of helicopter crashes on their pilots and passengers with what the agency calls a high-tech honeycomb airbag known as a deployable energy absorber .
So in order to test out its technology NASA dropped a small helicopter from a height of 35 feet to see whether its deployable energy absorber , made up of an expandable honeycomb cushion , could handle the stress .
The test crash hit the ground at about 54MPH at a 33 degree angle , what NASA called a relatively severe helicopter crash .
"</tokentext>
<sentencetext>coondoggie writes "NASA is looking to reduce the deadly impact of helicopter crashes on their pilots and passengers with what the agency calls a high-tech honeycomb airbag known as a deployable energy absorber.
So in order to test out its technology NASA dropped a small helicopter from a height of 35 feet to see whether its deployable energy absorber, made up of an expandable honeycomb cushion, could handle the stress.
The test crash hit the ground at about 54MPH at a 33 degree angle, what NASA called a relatively severe helicopter crash.
"</sentencetext>
</article>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30388142</id>
	<title>Video link and more details</title>
	<author>BinaryForces</author>
	<datestamp>1260461100000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><a href="http://www.nasa.gov/topics/aeronautics/features/helo-droptest.html" title="nasa.gov" rel="nofollow">http://www.nasa.gov/topics/aeronautics/features/helo-droptest.html</a> [nasa.gov]</htmltext>
<tokenext>http : //www.nasa.gov/topics/aeronautics/features/helo-droptest.html [ nasa.gov ]</tokentext>
<sentencetext>http://www.nasa.gov/topics/aeronautics/features/helo-droptest.html [nasa.gov]</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30381700</id>
	<title>Image</title>
	<author>Anonymous</author>
	<datestamp>1259578980000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>Why does clicking on the image lead to an image that is the exact same size? Really annoying and last thing I'd expect on a techie site.</p></htmltext>
<tokenext>Why does clicking on the image lead to an image that is the exact same size ?
Really annoying and last thing I 'd expect on a techie site .</tokentext>
<sentencetext>Why does clicking on the image lead to an image that is the exact same size?
Really annoying and last thing I'd expect on a techie site.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30380214</id>
	<title>Apparently NASA does not obey the laws of physics</title>
	<author>Trecares</author>
	<datestamp>1259572020000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>The physics for this does not work out. They can't hit 54 MPH in the space of 35 feet when being dropped with earth's gravity. They'd need to drop it from almost 100 feet to attain that, ignoring wind friction of course. I hesitate to wonder what a networking journal is doing reporting on NASA's activities, especially given the apparent lack of background expertise.</p><p>Trecares</p></htmltext>
<tokenext>The physics for this does not work out .
They ca n't hit 54 MPH in the space of 35 feet when being dropped with earth 's gravity .
They 'd need to drop it from almost 100 feet to attain that , ignoring wind friction of course .
I hesitate to wonder what a networking journal is doing reporting on NASA 's activities , especially given the apparent lack of background expertise.Trecares</tokentext>
<sentencetext>The physics for this does not work out.
They can't hit 54 MPH in the space of 35 feet when being dropped with earth's gravity.
They'd need to drop it from almost 100 feet to attain that, ignoring wind friction of course.
I hesitate to wonder what a networking journal is doing reporting on NASA's activities, especially given the apparent lack of background expertise.Trecares</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30382622</id>
	<title>Re:This is a great development</title>
	<author>couchslug</author>
	<datestamp>1259583660000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>"The development of an advanced "airbag" like this will really help accelerate the dawn of "highways in the sky","</p><p>There is no need for energy-wasting mass adoption of light aircraft,and no airbag/drogue chute/etc will solve the problems of midair collisions and running into expensive stuff such as buildings. Most people should not be trusted with an airplane of any sort because they are simple, easily distracted, and not very intelligent.</p><p>The best thing about general aviation is the high barrier to entry.</p></htmltext>
<tokenext>" The development of an advanced " airbag " like this will really help accelerate the dawn of " highways in the sky " , " There is no need for energy-wasting mass adoption of light aircraft,and no airbag/drogue chute/etc will solve the problems of midair collisions and running into expensive stuff such as buildings .
Most people should not be trusted with an airplane of any sort because they are simple , easily distracted , and not very intelligent.The best thing about general aviation is the high barrier to entry .</tokentext>
<sentencetext>"The development of an advanced "airbag" like this will really help accelerate the dawn of "highways in the sky","There is no need for energy-wasting mass adoption of light aircraft,and no airbag/drogue chute/etc will solve the problems of midair collisions and running into expensive stuff such as buildings.
Most people should not be trusted with an airplane of any sort because they are simple, easily distracted, and not very intelligent.The best thing about general aviation is the high barrier to entry.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30379812</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30381000</id>
	<title>This is hard</title>
	<author>Tablizer</author>
	<datestamp>1259576100000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>Must...resist...Rush...Limbaugh...joke...</p></htmltext>
<tokenext>Must...resist...Rush...Limbaugh...joke.. .</tokentext>
<sentencetext>Must...resist...Rush...Limbaugh...joke...</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30380722</id>
	<title>33 mph, not 53 mph</title>
	<author>Anonymous</author>
	<datestamp>1259574840000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>From the article:<br>"The test conditions imitated what would be a relatively severe helicopter crash. The flight path angle was about 33 degrees and the combined forward and vertical speeds were about 48 feet per second or 33 miles per hour (14.6 meters per second, 53.1 kph)"</p></htmltext>
<tokenext>From the article : " The test conditions imitated what would be a relatively severe helicopter crash .
The flight path angle was about 33 degrees and the combined forward and vertical speeds were about 48 feet per second or 33 miles per hour ( 14.6 meters per second , 53.1 kph ) "</tokentext>
<sentencetext>From the article:"The test conditions imitated what would be a relatively severe helicopter crash.
The flight path angle was about 33 degrees and the combined forward and vertical speeds were about 48 feet per second or 33 miles per hour (14.6 meters per second, 53.1 kph)"</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30379832</id>
	<title>No fair!  I thought of it first!</title>
	<author>Saint Stephen</author>
	<datestamp>1259612820000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>When I was young I used to wonder whether they couldn't wrap people in a stiff rubber like material that would just bounce off the ground if the plane crashed.</p><p>Of course, it would take some time to find you after your superball bounced around the country 23 times.</p></htmltext>
<tokenext>When I was young I used to wonder whether they could n't wrap people in a stiff rubber like material that would just bounce off the ground if the plane crashed.Of course , it would take some time to find you after your superball bounced around the country 23 times .</tokentext>
<sentencetext>When I was young I used to wonder whether they couldn't wrap people in a stiff rubber like material that would just bounce off the ground if the plane crashed.Of course, it would take some time to find you after your superball bounced around the country 23 times.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30380316</id>
	<title>Re:This is a great development</title>
	<author>Anonymous</author>
	<datestamp>1259572740000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>I think the main hindrance is that air vehicles, while relatively easy to control, are still harder to control than cars. And look how well the average person handles a car.</p></htmltext>
<tokenext>I think the main hindrance is that air vehicles , while relatively easy to control , are still harder to control than cars .
And look how well the average person handles a car .</tokentext>
<sentencetext>I think the main hindrance is that air vehicles, while relatively easy to control, are still harder to control than cars.
And look how well the average person handles a car.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30379812</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30379806</id>
	<title>A flying airbag is whatcha get...</title>
	<author>macraig</author>
	<datestamp>1259612640000</datestamp>
	<modclass>Funny</modclass>
	<modscore>4</modscore>
	<htmltext><p>... when you strap my mother-in-law to a turbine engine.  The rest of the plane is optional.</p></htmltext>
<tokenext>... when you strap my mother-in-law to a turbine engine .
The rest of the plane is optional .</tokentext>
<sentencetext>... when you strap my mother-in-law to a turbine engine.
The rest of the plane is optional.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30380288</id>
	<title>Re:Severe Crash?</title>
	<author>ratsbane</author>
	<datestamp>1259572500000</datestamp>
	<modclass>Funny</modclass>
	<modscore>2</modscore>
	<htmltext>[sigh]

Yes, but any helicopter that crashes from ABOVE 35 feet must also travel THROUGH 35 feet, thus a 35-foot test elevation should substitute for most helicopter crashes.

One could certainly argue that a 5-foot test would effectively sample more scenarios than a 35-foot test, so perhaps they should test based upon that height instead.

When will science learn that if you just use the right logic no one has to die.</htmltext>
<tokenext>[ sigh ] Yes , but any helicopter that crashes from ABOVE 35 feet must also travel THROUGH 35 feet , thus a 35-foot test elevation should substitute for most helicopter crashes .
One could certainly argue that a 5-foot test would effectively sample more scenarios than a 35-foot test , so perhaps they should test based upon that height instead .
When will science learn that if you just use the right logic no one has to die .</tokentext>
<sentencetext>[sigh]

Yes, but any helicopter that crashes from ABOVE 35 feet must also travel THROUGH 35 feet, thus a 35-foot test elevation should substitute for most helicopter crashes.
One could certainly argue that a 5-foot test would effectively sample more scenarios than a 35-foot test, so perhaps they should test based upon that height instead.
When will science learn that if you just use the right logic no one has to die.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30379864</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30379864</id>
	<title>Severe Crash?</title>
	<author>Anonymous</author>
	<datestamp>1259613000000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>A severe crash from 35 feet? How many helecopters do you know travel at a constant 35 feet? Nasa should try at a more reasonable height</p></htmltext>
<tokenext>A severe crash from 35 feet ?
How many helecopters do you know travel at a constant 35 feet ?
Nasa should try at a more reasonable height</tokentext>
<sentencetext>A severe crash from 35 feet?
How many helecopters do you know travel at a constant 35 feet?
Nasa should try at a more reasonable height</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30379878</id>
	<title>From heights of 36 feet and greater</title>
	<author>Anonymous</author>
	<datestamp>1259613180000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>This tech acts as a convenient container for your corpse.</p></htmltext>
<tokenext>This tech acts as a convenient container for your corpse .</tokentext>
<sentencetext>This tech acts as a convenient container for your corpse.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30379830</id>
	<title>Re:Anonymous Coward</title>
	<author>LOLLinux</author>
	<datestamp>1259612820000</datestamp>
	<modclass>Informativ</modclass>
	<modscore>2</modscore>
	<htmltext><p>The term you were thinking of is "windbag".</p></htmltext>
<tokenext>The term you were thinking of is " windbag " .</tokentext>
<sentencetext>The term you were thinking of is "windbag".</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30379750</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30380624</id>
	<title>Re:Apparently NASA does not obey the laws of physi</title>
	<author>Anonymous</author>
	<datestamp>1259574360000</datestamp>
	<modclass>Informativ</modclass>
	<modscore>5</modscore>
	<htmltext>Perhaps you need to go back and study some more physics.  In earth gravity of 32ft/s^2 it would take about 2 seconds to hit the ground from 35 feet falling straight down. 2 seconds of earth acceleration has you moving at 64ft/s, which is just over 43mph.  Even the lackluster summary states the impact was at 33 degrees, which implies the helicopter was guided in along a slope, rather than being dropped.  So using a bit of trig, 35ft/Sine(33) = 64.26ft is the length of slope the helicopter descended, at 33 degrees to the ground, to impact at 54mph, which would then imply that it was actually falling slower than gravitational pull would account for, largely due to the friction of the guide cable.  This is likely the same rig used to test reentry mechanisms for many other NASA vehicles, which has the ability to vary impact angle, while maintaining repeatability between each test in a given configuration.</htmltext>
<tokenext>Perhaps you need to go back and study some more physics .
In earth gravity of 32ft/s ^ 2 it would take about 2 seconds to hit the ground from 35 feet falling straight down .
2 seconds of earth acceleration has you moving at 64ft/s , which is just over 43mph .
Even the lackluster summary states the impact was at 33 degrees , which implies the helicopter was guided in along a slope , rather than being dropped .
So using a bit of trig , 35ft/Sine ( 33 ) = 64.26ft is the length of slope the helicopter descended , at 33 degrees to the ground , to impact at 54mph , which would then imply that it was actually falling slower than gravitational pull would account for , largely due to the friction of the guide cable .
This is likely the same rig used to test reentry mechanisms for many other NASA vehicles , which has the ability to vary impact angle , while maintaining repeatability between each test in a given configuration .</tokentext>
<sentencetext>Perhaps you need to go back and study some more physics.
In earth gravity of 32ft/s^2 it would take about 2 seconds to hit the ground from 35 feet falling straight down.
2 seconds of earth acceleration has you moving at 64ft/s, which is just over 43mph.
Even the lackluster summary states the impact was at 33 degrees, which implies the helicopter was guided in along a slope, rather than being dropped.
So using a bit of trig, 35ft/Sine(33) = 64.26ft is the length of slope the helicopter descended, at 33 degrees to the ground, to impact at 54mph, which would then imply that it was actually falling slower than gravitational pull would account for, largely due to the friction of the guide cable.
This is likely the same rig used to test reentry mechanisms for many other NASA vehicles, which has the ability to vary impact angle, while maintaining repeatability between each test in a given configuration.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30380214</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30380364</id>
	<title>Re:This is a great development</title>
	<author>egburr</author>
	<datestamp>1259573040000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>So, does the airbag deploy during the initial 100+ mph head-on collision 100 feet up in the air, or does it wait for the subsequent collision with the ground 20 seconds later?</p><p>The safety issues the would worry me are those of incompetent or incapacitated drivers not following the proper flight paths.</p><p>Also, consider how difficult it is to consistently and coherently mark a 2D surface of limited width (roads) and get people to understand and obey those markings; how would you mark a traffic path in the air? The current US air traffic system is already overwhelmed with the current number of airborne vehicles limited to only trained and licensed pilots.</p><p>I look forward to the day of public roadways being restricted to only 100\% computer-controlled vehicles; that is the only way general use of personal flying cars could possibly function with any semblance of safety.</p></htmltext>
<tokenext>So , does the airbag deploy during the initial 100 + mph head-on collision 100 feet up in the air , or does it wait for the subsequent collision with the ground 20 seconds later ? The safety issues the would worry me are those of incompetent or incapacitated drivers not following the proper flight paths.Also , consider how difficult it is to consistently and coherently mark a 2D surface of limited width ( roads ) and get people to understand and obey those markings ; how would you mark a traffic path in the air ?
The current US air traffic system is already overwhelmed with the current number of airborne vehicles limited to only trained and licensed pilots.I look forward to the day of public roadways being restricted to only 100 \ % computer-controlled vehicles ; that is the only way general use of personal flying cars could possibly function with any semblance of safety .</tokentext>
<sentencetext>So, does the airbag deploy during the initial 100+ mph head-on collision 100 feet up in the air, or does it wait for the subsequent collision with the ground 20 seconds later?The safety issues the would worry me are those of incompetent or incapacitated drivers not following the proper flight paths.Also, consider how difficult it is to consistently and coherently mark a 2D surface of limited width (roads) and get people to understand and obey those markings; how would you mark a traffic path in the air?
The current US air traffic system is already overwhelmed with the current number of airborne vehicles limited to only trained and licensed pilots.I look forward to the day of public roadways being restricted to only 100\% computer-controlled vehicles; that is the only way general use of personal flying cars could possibly function with any semblance of safety.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30379812</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30383418</id>
	<title>Where's the kaboom?</title>
	<author>Psaakyrn</author>
	<datestamp>1259588520000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>It's not proper collisions testing unless MythBusters does it. Preferably with big explosions somewhere in the process.</p></htmltext>
<tokenext>It 's not proper collisions testing unless MythBusters does it .
Preferably with big explosions somewhere in the process .</tokentext>
<sentencetext>It's not proper collisions testing unless MythBusters does it.
Preferably with big explosions somewhere in the process.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30379988</id>
	<title>how often would this actually help?</title>
	<author>fred fleenblat</author>
	<datestamp>1259613780000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>I can't say I've studied helicopter accidents very much, but every one that I've seen video of involved a main rotor or tail rotor failure.  The airbag seems like a good idea if the craft can autorotate down to the ground, but if the rotors are compromised you probably aren't going to hit belly first.</p><p>Perhaps there is a selection effect? I wouldn't likely see many successful autorotate landings of helicopters since they aren't sensational enough to make it onto the nightly news.</p></htmltext>
<tokenext>I ca n't say I 've studied helicopter accidents very much , but every one that I 've seen video of involved a main rotor or tail rotor failure .
The airbag seems like a good idea if the craft can autorotate down to the ground , but if the rotors are compromised you probably are n't going to hit belly first.Perhaps there is a selection effect ?
I would n't likely see many successful autorotate landings of helicopters since they are n't sensational enough to make it onto the nightly news .</tokentext>
<sentencetext>I can't say I've studied helicopter accidents very much, but every one that I've seen video of involved a main rotor or tail rotor failure.
The airbag seems like a good idea if the craft can autorotate down to the ground, but if the rotors are compromised you probably aren't going to hit belly first.Perhaps there is a selection effect?
I wouldn't likely see many successful autorotate landings of helicopters since they aren't sensational enough to make it onto the nightly news.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30380592</id>
	<title>Re:how often would this actually help?</title>
	<author>Anonymous</author>
	<datestamp>1259574240000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext>Successful autos are actually quite common, more common than unsuccessful ones. There've been several in Hawaii this year, no injuries.</htmltext>
<tokenext>Successful autos are actually quite common , more common than unsuccessful ones .
There 've been several in Hawaii this year , no injuries .</tokentext>
<sentencetext>Successful autos are actually quite common, more common than unsuccessful ones.
There've been several in Hawaii this year, no injuries.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30379988</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30383242</id>
	<title>Re:This is a great development</title>
	<author>vtcodger</author>
	<datestamp>1259587260000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>***The development of an advanced "airbag" like this will really help accelerate the dawn of "highways in the sky"***</p><p>Five car bombs in Baghdad yesterday.  127 dead.  500 Injured.  And that's despite checkpoints and vehicle inspections.</p><p>You want to try to implement building security in a world with several hundred million flying vehicles that are easily converted to DIY cruise missiles?   Think about it.<nobr> <wbr></nobr>... Really think about it.</p></htmltext>
<tokenext>* * * The development of an advanced " airbag " like this will really help accelerate the dawn of " highways in the sky " * * * Five car bombs in Baghdad yesterday .
127 dead .
500 Injured .
And that 's despite checkpoints and vehicle inspections.You want to try to implement building security in a world with several hundred million flying vehicles that are easily converted to DIY cruise missiles ?
Think about it .
... Really think about it .</tokentext>
<sentencetext>***The development of an advanced "airbag" like this will really help accelerate the dawn of "highways in the sky"***Five car bombs in Baghdad yesterday.
127 dead.
500 Injured.
And that's despite checkpoints and vehicle inspections.You want to try to implement building security in a world with several hundred million flying vehicles that are easily converted to DIY cruise missiles?
Think about it.
... Really think about it.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30379812</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30392132</id>
	<title>Re:Somewhat pointless</title>
	<author>Painted</author>
	<datestamp>1260474900000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>Remember that when the rotor hits the ground, it has considerable angular velocity (barring a complete transmission failure and lockup, which is far far more likely to asplode the transmission than halt the main rotor), so many (most?) of those flying bits you're referring to are a danger to others at the crash site, not the occupants of the craft.</htmltext>
<tokenext>Remember that when the rotor hits the ground , it has considerable angular velocity ( barring a complete transmission failure and lockup , which is far far more likely to asplode the transmission than halt the main rotor ) , so many ( most ?
) of those flying bits you 're referring to are a danger to others at the crash site , not the occupants of the craft .</tokentext>
<sentencetext>Remember that when the rotor hits the ground, it has considerable angular velocity (barring a complete transmission failure and lockup, which is far far more likely to asplode the transmission than halt the main rotor), so many (most?
) of those flying bits you're referring to are a danger to others at the crash site, not the occupants of the craft.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30381804</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30380696</id>
	<title>Re:Severe Crash?</title>
	<author>Locke2005</author>
	<datestamp>1259574720000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>How was this modded "insightful" instead of "funny"? A 35 foot test only substitutes for greater height tests if in falling from a greater height, the helicopter pauses at 35 feet before continuing on to it's doom... as far as 33 mph, it's possible they accelerated it horizontally before they dropped it; they're simulating an auto-rotating 'copter coming in hard, not a 'copter falling from the sky like a brick.</htmltext>
<tokenext>How was this modded " insightful " instead of " funny " ?
A 35 foot test only substitutes for greater height tests if in falling from a greater height , the helicopter pauses at 35 feet before continuing on to it 's doom... as far as 33 mph , it 's possible they accelerated it horizontally before they dropped it ; they 're simulating an auto-rotating 'copter coming in hard , not a 'copter falling from the sky like a brick .</tokentext>
<sentencetext>How was this modded "insightful" instead of "funny"?
A 35 foot test only substitutes for greater height tests if in falling from a greater height, the helicopter pauses at 35 feet before continuing on to it's doom... as far as 33 mph, it's possible they accelerated it horizontally before they dropped it; they're simulating an auto-rotating 'copter coming in hard, not a 'copter falling from the sky like a brick.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30380288</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30381806</id>
	<title>The issue with air crashes...</title>
	<author>SeeSp0tRun</author>
	<datestamp>1259579520000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>As some know, cars are well equipped with something that is called a crumple zone.  Airbags keep your seatbelt from breaking your neck, but the crumple zone is what absorbs most of the force of the crash.  See <a href="http://www.youtube.com/watch?v=CJHpUO-S0i8" title="youtube.com" rel="nofollow">this video</a> [youtube.com] for why your crumple zones make a big difference over the air bags.</htmltext>
<tokenext>As some know , cars are well equipped with something that is called a crumple zone .
Airbags keep your seatbelt from breaking your neck , but the crumple zone is what absorbs most of the force of the crash .
See this video [ youtube.com ] for why your crumple zones make a big difference over the air bags .</tokentext>
<sentencetext>As some know, cars are well equipped with something that is called a crumple zone.
Airbags keep your seatbelt from breaking your neck, but the crumple zone is what absorbs most of the force of the crash.
See this video [youtube.com] for why your crumple zones make a big difference over the air bags.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30381600</id>
	<title>Re:Severe Crash?</title>
	<author>SoupIsGoodFood\_42</author>
	<datestamp>1259578560000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>That depends on if you screw up the landing during an auto-rotation. Which may be beyond your control if you have limited landing sites. No point in keeping enough energy for a smooth landing if doing so will set you down on a forest canopy.</p></htmltext>
<tokenext>That depends on if you screw up the landing during an auto-rotation .
Which may be beyond your control if you have limited landing sites .
No point in keeping enough energy for a smooth landing if doing so will set you down on a forest canopy .</tokentext>
<sentencetext>That depends on if you screw up the landing during an auto-rotation.
Which may be beyond your control if you have limited landing sites.
No point in keeping enough energy for a smooth landing if doing so will set you down on a forest canopy.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30380096</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30380228</id>
	<title>On a related note</title>
	<author>muncadunc</author>
	<datestamp>1259572140000</datestamp>
	<modclass>Funny</modclass>
	<modscore>2</modscore>
	<htmltext>On a related note, I think final car safety tests should be performed with the CEOs of the car company inside the car.</htmltext>
<tokenext>On a related note , I think final car safety tests should be performed with the CEOs of the car company inside the car .</tokentext>
<sentencetext>On a related note, I think final car safety tests should be performed with the CEOs of the car company inside the car.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30392084</id>
	<title>Re:how often would this actually help?</title>
	<author>Painted</author>
	<datestamp>1260474660000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>Autorotation works just fine during a tail rotor failure. In my two years working for a helicopter company (which happened to be a unusually bad couple years for crashes in our area), the causes of crashes were mostly main rotor blade touches (ie, smacking the rotor into something, losing lift, and rolling down the mountain), or long line incidents (water bucket caught in tree, with predictable "inverted pendulum" motion).</htmltext>
<tokenext>Autorotation works just fine during a tail rotor failure .
In my two years working for a helicopter company ( which happened to be a unusually bad couple years for crashes in our area ) , the causes of crashes were mostly main rotor blade touches ( ie , smacking the rotor into something , losing lift , and rolling down the mountain ) , or long line incidents ( water bucket caught in tree , with predictable " inverted pendulum " motion ) .</tokentext>
<sentencetext>Autorotation works just fine during a tail rotor failure.
In my two years working for a helicopter company (which happened to be a unusually bad couple years for crashes in our area), the causes of crashes were mostly main rotor blade touches (ie, smacking the rotor into something, losing lift, and rolling down the mountain), or long line incidents (water bucket caught in tree, with predictable "inverted pendulum" motion).</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30379988</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30380096</id>
	<title>Re:Severe Crash?</title>
	<author>AndersOSU</author>
	<datestamp>1259614500000</datestamp>
	<modclass>Interestin</modclass>
	<modscore>2</modscore>
	<htmltext><p>how many helicopters are generating zero lift when they hit the ground?  What's important is not the height of helicopter crashes, but the speed.  I can certainly imagine worse accidents than 53mph at 33 degrees, but I'm willing to take NASA's word for it that this is "relatively severe."</p></htmltext>
<tokenext>how many helicopters are generating zero lift when they hit the ground ?
What 's important is not the height of helicopter crashes , but the speed .
I can certainly imagine worse accidents than 53mph at 33 degrees , but I 'm willing to take NASA 's word for it that this is " relatively severe .
"</tokentext>
<sentencetext>how many helicopters are generating zero lift when they hit the ground?
What's important is not the height of helicopter crashes, but the speed.
I can certainly imagine worse accidents than 53mph at 33 degrees, but I'm willing to take NASA's word for it that this is "relatively severe.
"</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30379864</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30379860</id>
	<title>And?</title>
	<author>Anonymous</author>
	<datestamp>1259613000000</datestamp>
	<modclass>Insightful</modclass>
	<modscore>5</modscore>
	<htmltext><p>The thing hit the ground, and what happened? Worst. summary. ever.  From nasa: "Engineers say the MD-500 survived relatively intact as a result of the honeycomb cushion. "</p></htmltext>
<tokenext>The thing hit the ground , and what happened ?
Worst. summary .
ever. From nasa : " Engineers say the MD-500 survived relatively intact as a result of the honeycomb cushion .
"</tokentext>
<sentencetext>The thing hit the ground, and what happened?
Worst. summary.
ever.  From nasa: "Engineers say the MD-500 survived relatively intact as a result of the honeycomb cushion.
"</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30382654</id>
	<title>Re:how often would this actually help?</title>
	<author>couchslug</author>
	<datestamp>1259583840000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>Autorotation after damage in combat is common. The air bag is a natural safety measure for helos at low height with little/no  forward speed over a landing zone.</p></htmltext>
<tokenext>Autorotation after damage in combat is common .
The air bag is a natural safety measure for helos at low height with little/no forward speed over a landing zone .</tokentext>
<sentencetext>Autorotation after damage in combat is common.
The air bag is a natural safety measure for helos at low height with little/no  forward speed over a landing zone.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30379988</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30379814</id>
	<title>Demolition Man</title>
	<author>Anonymous</author>
	<datestamp>1259612700000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>I liked the system that they had in Demolition Man.  When the car that Sylvester Stallone was driving crashed, it filled with foam.  Initially, it came out like shaving cream, but by the time the crash had finished, it was like styrofoam.  There are two problems I can see with it.  The foam will suffocate you if it solidifies around (or even in) your mouth and nose.  Also, it may be difficult to extract yourself from the foam.</htmltext>
<tokenext>I liked the system that they had in Demolition Man .
When the car that Sylvester Stallone was driving crashed , it filled with foam .
Initially , it came out like shaving cream , but by the time the crash had finished , it was like styrofoam .
There are two problems I can see with it .
The foam will suffocate you if it solidifies around ( or even in ) your mouth and nose .
Also , it may be difficult to extract yourself from the foam .</tokentext>
<sentencetext>I liked the system that they had in Demolition Man.
When the car that Sylvester Stallone was driving crashed, it filled with foam.
Initially, it came out like shaving cream, but by the time the crash had finished, it was like styrofoam.
There are two problems I can see with it.
The foam will suffocate you if it solidifies around (or even in) your mouth and nose.
Also, it may be difficult to extract yourself from the foam.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30384234</id>
	<title>Bugs Bunny figured this out already.</title>
	<author>Anonymous</author>
	<datestamp>1259594640000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>Hasn't the FAA watched Looney Toons? Just when the plane Bugs was in was about to crash, he simply stepped out without a scratch!</p></htmltext>
<tokenext>Has n't the FAA watched Looney Toons ?
Just when the plane Bugs was in was about to crash , he simply stepped out without a scratch !</tokentext>
<sentencetext>Hasn't the FAA watched Looney Toons?
Just when the plane Bugs was in was about to crash, he simply stepped out without a scratch!</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30379832</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30380668</id>
	<title>Re:Apparently NASA does not obey the laws of physi</title>
	<author>Iron Condor</author>
	<datestamp>1259574540000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>It's close enough to the free-fall velocity in vacuum in <i>km</i> per hour, that I'm suspecting that someone at Networkworld just wasn't paying attention to units.

Unfortunately NASA has been hobbled by all kinds of external contractors/suppliers/manufacturers/operators and, apparently, reporters who just aren't quite bright enough to get metric units.

Of course any article about anything that NASA supposedly does/did/said that doesn't come with a link to an official souce might as well be considered a fabrication. There's certainly enough of those around on the net.</htmltext>
<tokenext>It 's close enough to the free-fall velocity in vacuum in km per hour , that I 'm suspecting that someone at Networkworld just was n't paying attention to units .
Unfortunately NASA has been hobbled by all kinds of external contractors/suppliers/manufacturers/operators and , apparently , reporters who just are n't quite bright enough to get metric units .
Of course any article about anything that NASA supposedly does/did/said that does n't come with a link to an official souce might as well be considered a fabrication .
There 's certainly enough of those around on the net .</tokentext>
<sentencetext>It's close enough to the free-fall velocity in vacuum in km per hour, that I'm suspecting that someone at Networkworld just wasn't paying attention to units.
Unfortunately NASA has been hobbled by all kinds of external contractors/suppliers/manufacturers/operators and, apparently, reporters who just aren't quite bright enough to get metric units.
Of course any article about anything that NASA supposedly does/did/said that doesn't come with a link to an official souce might as well be considered a fabrication.
There's certainly enough of those around on the net.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30380214</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30381876</id>
	<title>"Relatively Intact"?</title>
	<author>trygstad</author>
	<datestamp>1259579760000</datestamp>
	<modclass>Informativ</modclass>
	<modscore>3</modscore>
	<htmltext>I really don't know what the heck they mean by "Relatively Intact". In my 3300+ hours of piloting helicopters the only valid criteria was "Could you walk away from it?" That's the standard pilots (and I assume passengers) really care about.</htmltext>
<tokenext>I really do n't know what the heck they mean by " Relatively Intact " .
In my 3300 + hours of piloting helicopters the only valid criteria was " Could you walk away from it ?
" That 's the standard pilots ( and I assume passengers ) really care about .</tokentext>
<sentencetext>I really don't know what the heck they mean by "Relatively Intact".
In my 3300+ hours of piloting helicopters the only valid criteria was "Could you walk away from it?
" That's the standard pilots (and I assume passengers) really care about.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30380644</id>
	<title>Re:This is a great development</title>
	<author>Anonymous</author>
	<datestamp>1259574420000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>I agree; moreover,  this is a huge improvement over the failed helicopter ejector seat.</p></htmltext>
<tokenext>I agree ; moreover , this is a huge improvement over the failed helicopter ejector seat .</tokentext>
<sentencetext>I agree; moreover,  this is a huge improvement over the failed helicopter ejector seat.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30379812</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30379962</id>
	<title>NASA Tests Flying Airbag</title>
	<author>MonsterTrimble</author>
	<datestamp>1259613600000</datestamp>
	<modclass>Flamebait</modclass>
	<modscore>0</modscore>
	<htmltext>Catapult + Glenn Beck</htmltext>
<tokenext>Catapult + Glenn Beck</tokentext>
<sentencetext>Catapult + Glenn Beck</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30380680</id>
	<title>Re:Apparently NASA does not obey the laws of physi</title>
	<author>19thNervousBreakdown</author>
	<datestamp>1259574660000</datestamp>
	<modclass>Funny</modclass>
	<modscore>4</modscore>
	<htmltext>Just put weights in it, duh.</htmltext>
<tokenext>Just put weights in it , duh .</tokentext>
<sentencetext>Just put weights in it, duh.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30380214</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30380148</id>
	<title>Well... what happened?!?</title>
	<author>Ponteaus</author>
	<datestamp>1259614740000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>TFS didn't mention it, but the helicopter and "passengers" (excluding the skids) survived the crash.</htmltext>
<tokenext>TFS did n't mention it , but the helicopter and " passengers " ( excluding the skids ) survived the crash .</tokentext>
<sentencetext>TFS didn't mention it, but the helicopter and "passengers" (excluding the skids) survived the crash.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30380788</id>
	<title>Re:A flying airbag is whatcha get...</title>
	<author>sconeu</author>
	<datestamp>1259575140000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>I was hoping to be the one to put the politician in the cannon to create a "flying airbag".</p><p>Wait... that would be a flying douchebag.</p></htmltext>
<tokenext>I was hoping to be the one to put the politician in the cannon to create a " flying airbag " .Wait... that would be a flying douchebag .</tokentext>
<sentencetext>I was hoping to be the one to put the politician in the cannon to create a "flying airbag".Wait... that would be a flying douchebag.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30379806</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30388672</id>
	<title>Re:This is a great development</title>
	<author>petermgreen</author>
	<datestamp>1260463680000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>I don't think safety is a primary hinderance at this stage, yeah light aircraft are a bit more dangerous than cars but not insanely so.</p><p>At some point if light air traffic were to increase hugely then we would need some kind of highways in the sky system for light planes but I personally don't see us getting to the point for other reasons.</p><p>You don't define flying car so lets consider a few categories of personal air vehicle and thier problems (ordered from most currently practical to least currently practical).</p><p>conventional light aircraft: cramped, fairly expensive to buy and maintain (but less so than other options here), needs to be stored at an airport (adds cost) which you must return to to pick it up again.</p><p>roadable aircraft: cramped (depending on just how much you are willing to spend), regulatory issues with trying to get approved as both a car and a plane, special mechanisms needed for conversion between flight and road configurations. These factors drive up the cost.</p><p>helicopter: noisy, difficult to fly and very expensive to run, probablly cramped (depending on just how much you are willing to spend) but can land in a relatively small space. Popular with the very rich who can afford the high running costs and the cost of the pilot.</p><p>flying car based on downward jet thrust: very noisy, insane fuel consumption, probablly pretty dangerous too.</p><p>Scifi flying car (quiet running, vtol, car size and shape): technically unfeasible with current techology.</p></htmltext>
<tokenext>I do n't think safety is a primary hinderance at this stage , yeah light aircraft are a bit more dangerous than cars but not insanely so.At some point if light air traffic were to increase hugely then we would need some kind of highways in the sky system for light planes but I personally do n't see us getting to the point for other reasons.You do n't define flying car so lets consider a few categories of personal air vehicle and thier problems ( ordered from most currently practical to least currently practical ) .conventional light aircraft : cramped , fairly expensive to buy and maintain ( but less so than other options here ) , needs to be stored at an airport ( adds cost ) which you must return to to pick it up again.roadable aircraft : cramped ( depending on just how much you are willing to spend ) , regulatory issues with trying to get approved as both a car and a plane , special mechanisms needed for conversion between flight and road configurations .
These factors drive up the cost.helicopter : noisy , difficult to fly and very expensive to run , probablly cramped ( depending on just how much you are willing to spend ) but can land in a relatively small space .
Popular with the very rich who can afford the high running costs and the cost of the pilot.flying car based on downward jet thrust : very noisy , insane fuel consumption , probablly pretty dangerous too.Scifi flying car ( quiet running , vtol , car size and shape ) : technically unfeasible with current techology .</tokentext>
<sentencetext>I don't think safety is a primary hinderance at this stage, yeah light aircraft are a bit more dangerous than cars but not insanely so.At some point if light air traffic were to increase hugely then we would need some kind of highways in the sky system for light planes but I personally don't see us getting to the point for other reasons.You don't define flying car so lets consider a few categories of personal air vehicle and thier problems (ordered from most currently practical to least currently practical).conventional light aircraft: cramped, fairly expensive to buy and maintain (but less so than other options here), needs to be stored at an airport (adds cost) which you must return to to pick it up again.roadable aircraft: cramped (depending on just how much you are willing to spend), regulatory issues with trying to get approved as both a car and a plane, special mechanisms needed for conversion between flight and road configurations.
These factors drive up the cost.helicopter: noisy, difficult to fly and very expensive to run, probablly cramped (depending on just how much you are willing to spend) but can land in a relatively small space.
Popular with the very rich who can afford the high running costs and the cost of the pilot.flying car based on downward jet thrust: very noisy, insane fuel consumption, probablly pretty dangerous too.Scifi flying car (quiet running, vtol, car size and shape): technically unfeasible with current techology.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30379812</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30381804</id>
	<title>Somewhat pointless</title>
	<author>Eil</author>
	<datestamp>1259579520000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>I'm all for using science and research to improve safety, but this seems a little pointless to me. All helicopter crashes can be generally lumped into two categories: those in which control is lost at a relatively high altitude, and those in which control is lost only a short<br>distance from the ground.</p><p>In the former case, no one survives. Once a helicopter pilot loses control of the machine, it has all the aerodynamics of a grand piano and will collide with the ground with much the same effect.</p><p>In the latter case, the biggest threat to life and safety isn't the collision with the ground, it's the two giant rotors spinning at an ungodly rate. In a crash, the rotors inevitably strike the ground or a nearby structure and cause all manner of high-velocity objects, material, shrapnel, as well as the rotor blades themselves, to go flying in all directions.</p><p>This flying airbag is only going to be of much help in only the best-case crashes where the bird is only a short distance from the ground, perfectly level, and a good distance away from any structures. Go watch some YouTube videos of helicopter crashes. Those kinds of videos completely cured me of wanting to be a helicopter pilot some day. There are lots of ways a pilot can survive even the most severe problem with a normal airplane. In a helicopter, even the slightest mistake can kill you and a lot of other people before you even realize a mistake has been made.</p></htmltext>
<tokenext>I 'm all for using science and research to improve safety , but this seems a little pointless to me .
All helicopter crashes can be generally lumped into two categories : those in which control is lost at a relatively high altitude , and those in which control is lost only a shortdistance from the ground.In the former case , no one survives .
Once a helicopter pilot loses control of the machine , it has all the aerodynamics of a grand piano and will collide with the ground with much the same effect.In the latter case , the biggest threat to life and safety is n't the collision with the ground , it 's the two giant rotors spinning at an ungodly rate .
In a crash , the rotors inevitably strike the ground or a nearby structure and cause all manner of high-velocity objects , material , shrapnel , as well as the rotor blades themselves , to go flying in all directions.This flying airbag is only going to be of much help in only the best-case crashes where the bird is only a short distance from the ground , perfectly level , and a good distance away from any structures .
Go watch some YouTube videos of helicopter crashes .
Those kinds of videos completely cured me of wanting to be a helicopter pilot some day .
There are lots of ways a pilot can survive even the most severe problem with a normal airplane .
In a helicopter , even the slightest mistake can kill you and a lot of other people before you even realize a mistake has been made .</tokentext>
<sentencetext>I'm all for using science and research to improve safety, but this seems a little pointless to me.
All helicopter crashes can be generally lumped into two categories: those in which control is lost at a relatively high altitude, and those in which control is lost only a shortdistance from the ground.In the former case, no one survives.
Once a helicopter pilot loses control of the machine, it has all the aerodynamics of a grand piano and will collide with the ground with much the same effect.In the latter case, the biggest threat to life and safety isn't the collision with the ground, it's the two giant rotors spinning at an ungodly rate.
In a crash, the rotors inevitably strike the ground or a nearby structure and cause all manner of high-velocity objects, material, shrapnel, as well as the rotor blades themselves, to go flying in all directions.This flying airbag is only going to be of much help in only the best-case crashes where the bird is only a short distance from the ground, perfectly level, and a good distance away from any structures.
Go watch some YouTube videos of helicopter crashes.
Those kinds of videos completely cured me of wanting to be a helicopter pilot some day.
There are lots of ways a pilot can survive even the most severe problem with a normal airplane.
In a helicopter, even the slightest mistake can kill you and a lot of other people before you even realize a mistake has been made.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30379958</id>
	<title>This is the only thing keeping me...</title>
	<author>TheModelEskimo</author>
	<datestamp>1259613540000</datestamp>
	<modclass>Informativ</modclass>
	<modscore>3</modscore>
	<htmltext>...from becoming a helicopter pilot. In fact, just last night my wife said, "sure honey, you can become a pilot just as soon as they invent the deployable energy absorber."<br> <br>C'MON NASA!!!</htmltext>
<tokenext>...from becoming a helicopter pilot .
In fact , just last night my wife said , " sure honey , you can become a pilot just as soon as they invent the deployable energy absorber .
" C'MON NASA ! !
!</tokentext>
<sentencetext>...from becoming a helicopter pilot.
In fact, just last night my wife said, "sure honey, you can become a pilot just as soon as they invent the deployable energy absorber.
" C'MON NASA!!
!</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30384578</id>
	<title>Re:This is a great development</title>
	<author>DougF</author>
	<datestamp>1259598000000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p><div class="quote"><p>So, does the airbag deploy during the initial 100+ mph head-on collision 100 feet up in the air, or does it wait for the subsequent collision with the ground 20 seconds later?</p></div><p>What gravity well do you live in that it takes 20 seconds to fall 100ft?</p></div>
	</htmltext>
<tokenext>So , does the airbag deploy during the initial 100 + mph head-on collision 100 feet up in the air , or does it wait for the subsequent collision with the ground 20 seconds later ? What gravity well do you live in that it takes 20 seconds to fall 100ft ?</tokentext>
<sentencetext>So, does the airbag deploy during the initial 100+ mph head-on collision 100 feet up in the air, or does it wait for the subsequent collision with the ground 20 seconds later?What gravity well do you live in that it takes 20 seconds to fall 100ft?
	</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30380364</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30379812</id>
	<title>This is a great development</title>
	<author>Jogar the Barbarian</author>
	<datestamp>1259612640000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>One of the main hindrances (the primary hindrance?) to adopting widespread flying cars or other airborne vehicles is safety, and helping to keep people from killing themselves in spectacularly Youtube-worthy ways. The development of an advanced "airbag" like this will really help accelerate the dawn of "highways in the sky", IMO. (Disclaimer: I work for NASA, albeit as an IT geek)</p></htmltext>
<tokenext>One of the main hindrances ( the primary hindrance ?
) to adopting widespread flying cars or other airborne vehicles is safety , and helping to keep people from killing themselves in spectacularly Youtube-worthy ways .
The development of an advanced " airbag " like this will really help accelerate the dawn of " highways in the sky " , IMO .
( Disclaimer : I work for NASA , albeit as an IT geek )</tokentext>
<sentencetext>One of the main hindrances (the primary hindrance?
) to adopting widespread flying cars or other airborne vehicles is safety, and helping to keep people from killing themselves in spectacularly Youtube-worthy ways.
The development of an advanced "airbag" like this will really help accelerate the dawn of "highways in the sky", IMO.
(Disclaimer: I work for NASA, albeit as an IT geek)</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30398298</id>
	<title>Very interesting</title>
	<author>Jeprey</author>
	<datestamp>1260465120000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p>
This could be incredible useful for automobiles.  In order to increase efficiency you need to drop weight (as in, stop having SUV-like weight).  The problem is that that weight creates a certain amount of crash safety (for the SUV driver to some extent - not so much thought, and not at all for anyone driving a smaller car).  Given that, being able to use a light-weight energy absorption system like this could solve that problem and allow cars to have weights below 1000 lbs yet still have excellent crash safety.</p></htmltext>
<tokenext>This could be incredible useful for automobiles .
In order to increase efficiency you need to drop weight ( as in , stop having SUV-like weight ) .
The problem is that that weight creates a certain amount of crash safety ( for the SUV driver to some extent - not so much thought , and not at all for anyone driving a smaller car ) .
Given that , being able to use a light-weight energy absorption system like this could solve that problem and allow cars to have weights below 1000 lbs yet still have excellent crash safety .</tokentext>
<sentencetext>
This could be incredible useful for automobiles.
In order to increase efficiency you need to drop weight (as in, stop having SUV-like weight).
The problem is that that weight creates a certain amount of crash safety (for the SUV driver to some extent - not so much thought, and not at all for anyone driving a smaller car).
Given that, being able to use a light-weight energy absorption system like this could solve that problem and allow cars to have weights below 1000 lbs yet still have excellent crash safety.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30387770</id>
	<title>Re:Somewhat pointless</title>
	<author>Anonymous</author>
	<datestamp>1260458940000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p><i>I'm all for using science and research to improve safety, but this seems a little pointless to me.</i><br>Yeah, you should call up NASA and tell them.  I bet them dumb fuckers never even thought of that.</p></htmltext>
<tokenext>I 'm all for using science and research to improve safety , but this seems a little pointless to me.Yeah , you should call up NASA and tell them .
I bet them dumb fuckers never even thought of that .</tokentext>
<sentencetext>I'm all for using science and research to improve safety, but this seems a little pointless to me.Yeah, you should call up NASA and tell them.
I bet them dumb fuckers never even thought of that.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30381804</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30383778</id>
	<title>Re:On a related note</title>
	<author>aurelianito</author>
	<datestamp>1259590740000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><blockquote><div><p>On a related note, I think final car safety tests should be performed with the CEOs of the car company inside the car.</p></div></blockquote><p>
When romans inaugurated their bridges, the architect was below them. They lasted two thousand years.</p></div>
	</htmltext>
<tokenext>On a related note , I think final car safety tests should be performed with the CEOs of the car company inside the car .
When romans inaugurated their bridges , the architect was below them .
They lasted two thousand years .</tokentext>
<sentencetext>On a related note, I think final car safety tests should be performed with the CEOs of the car company inside the car.
When romans inaugurated their bridges, the architect was below them.
They lasted two thousand years.
	</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30380228</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30379750</id>
	<title>Anonymous Coward</title>
	<author>Anonymous</author>
	<datestamp>1259612280000</datestamp>
	<modclass>Funny</modclass>
	<modscore>2</modscore>
	<htmltext><p>Thought you meant throwing a Senator out the window...</p></htmltext>
<tokenext>Thought you meant throwing a Senator out the window.. .</tokentext>
<sentencetext>Thought you meant throwing a Senator out the window...</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30380346</id>
	<title>NASA Stated</title>
	<author>Anonymous</author>
	<datestamp>1259572980000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>Who stated that comment?  Oh ya, NASA stated it.</p></htmltext>
<tokenext>Who stated that comment ?
Oh ya , NASA stated it .</tokentext>
<sentencetext>Who stated that comment?
Oh ya, NASA stated it.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30381466</id>
	<title>Re:Apparently NASA does not obey the laws of physi</title>
	<author>Anonymous</author>
	<datestamp>1259578020000</datestamp>
	<modclass>None</modclass>
	<modscore>0</modscore>
	<htmltext><p>Try holding a ball in your hand and then drop it at a 33 degree angle.</p><p>Having trouble?  Now try throwing it to get the desired angle.</p><p>It's going faster now, isn't it?</p><p>Obviously they had to do the same with the helicopter.</p></htmltext>
<tokenext>Try holding a ball in your hand and then drop it at a 33 degree angle.Having trouble ?
Now try throwing it to get the desired angle.It 's going faster now , is n't it ? Obviously they had to do the same with the helicopter .</tokentext>
<sentencetext>Try holding a ball in your hand and then drop it at a 33 degree angle.Having trouble?
Now try throwing it to get the desired angle.It's going faster now, isn't it?Obviously they had to do the same with the helicopter.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30380214</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30380412</id>
	<title>Video</title>
	<author>e4g4</author>
	<datestamp>1259573340000</datestamp>
	<modclass>Informativ</modclass>
	<modscore>3</modscore>
	<htmltext>This site has a <a href="http://www.nasa.gov/topics/aeronautics/features/helo-droptest.html" title="nasa.gov">video</a> [nasa.gov] and some more information.</htmltext>
<tokenext>This site has a video [ nasa.gov ] and some more information .</tokentext>
<sentencetext>This site has a video [nasa.gov] and some more information.</sentencetext>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30386070</id>
	<title>Re:Apparently NASA does not obey the laws of physi</title>
	<author>f3r</author>
	<datestamp>1260440880000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext><p><div class="quote"><p>Perhaps you need to go back and study some more physics.</p></div><p> (preferrably this time using the metric, international-except-some-countries-dontaskmewhy, system)<nobr> <wbr></nobr>.</p><p><div class="quote"><p>In earth gravity of 32ft/s^2</p></div><p>, or equivalently 23.123 elbows/alittlewhiles^2.
</p><p>
I really appreciated when you translated the 64ft/s to 43mph, it really makes it much more intuitive for the rest of the world.
</p><p>
Please don't be offended</p></div>
	</htmltext>
<tokenext>Perhaps you need to go back and study some more physics .
( preferrably this time using the metric , international-except-some-countries-dontaskmewhy , system ) .In earth gravity of 32ft/s ^ 2 , or equivalently 23.123 elbows/alittlewhiles ^ 2 .
I really appreciated when you translated the 64ft/s to 43mph , it really makes it much more intuitive for the rest of the world .
Please do n't be offended</tokentext>
<sentencetext>Perhaps you need to go back and study some more physics.
(preferrably this time using the metric, international-except-some-countries-dontaskmewhy, system) .In earth gravity of 32ft/s^2, or equivalently 23.123 elbows/alittlewhiles^2.
I really appreciated when you translated the 64ft/s to 43mph, it really makes it much more intuitive for the rest of the world.
Please don't be offended
	</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30380624</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30382614</id>
	<title>Re:This is a great development</title>
	<author>Mindwarp</author>
	<datestamp>1259583600000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>Oh you may laugh, but they've been developed and tested!  Explosive bolts sever the rotor blades before seat ejection on the Russian designed units, while I believe the American units were downward ejecting.</htmltext>
<tokenext>Oh you may laugh , but they 've been developed and tested !
Explosive bolts sever the rotor blades before seat ejection on the Russian designed units , while I believe the American units were downward ejecting .</tokentext>
<sentencetext>Oh you may laugh, but they've been developed and tested!
Explosive bolts sever the rotor blades before seat ejection on the Russian designed units, while I believe the American units were downward ejecting.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30380644</parent>
</comment>
<comment>
	<id>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30380598</id>
	<title>Re:Apparently NASA does not obey the laws of physi</title>
	<author>Cedric Tsui</author>
	<datestamp>1259574240000</datestamp>
	<modclass>None</modclass>
	<modscore>1</modscore>
	<htmltext>*double checks your math*
Hun... That's funny.</htmltext>
<tokenext>* double checks your math * Hun... That 's funny .</tokentext>
<sentencetext>*double checks your math*
Hun... That's funny.</sentencetext>
	<parent>http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30380214</parent>
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-http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30380096
--http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30381600
-http://www.semanticweb.org/ontologies/ConversationInstances.owl#comment09_12_09_1625237.30380288
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