h a l f b a k e r yExtruded? Are you sure?
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I don't know about commercial airliners,
but this would be a wild ride. Plus you
could go over and over instead of
skydiving, where you go once. Very
long cords would be possible. You
might still want a parachute, just in
case. |
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Commercial airliners don't have the right sort of airframes for this sort of thing, but a C-130 certainly would. |
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An additional frisson could be added by carefully calculating the lowest point of the jumper's trajectory and flying just a little bit higer, so they almost, but not quite, hit the ground, while travelling horizontally at up to 300 MPH, suspended from a fragile elastic strand. |
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The idea is ludicrously dangerous, inadvisable, a misuse of expensive technology and precious fossil fuels, and likely to result in the serious injury or death of the participants. It should be done IMMEDIATELY. [+] |
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Cruising altitude is about -50C. Maybe as an extreme sport from a plane employed for the purpose, but not from a commercial airliner. |
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So strap me in and anchor me
Tell me that youll wait for me
Tell me that it'll never let me go
'cause I'm bungieing from a jet plane
Dont know when I'll be back again
Oh babe, I hate to go |
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Boned because of deleted anno |
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flying is scary enough. sitting in a weak metal tube hurtling through the air at 800klm/h, 10klm from the earth surface, with no real safety alternative. yes, lets jump out of it. |
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mAIdAI! MaYDaY! wEindshHIeer! Plane pitchin down! Cuttin bunjie rope to regain control! |
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Vicarious liability. These are not just words, they are a sentence, longer than any (sp: bungee) you could produce. |
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Almost as good as the helicopter ejector seat |
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I was ready to bun - but you're deleting annos? Bone. |
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non-abusive-anno deletion [-] |
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Bubba's getting cranky. Must be time for his nap. |
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BTW - original post deleted due to unprovoked offensive content. |
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Vicarious liability. These are not just words, they are a sentence, longer than any (sp: bungee) you could produce.
4whom, Sep 22 2008 |
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"Vicarious liability" is not a sentence. |
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Well, based on some back of an envelope calcs - I get the following. |
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Terminal velocity of a skydiver = 60m/s. |
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Wind resistance = friction constant * velocity squared |
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Therefore,for a 100kg subject, friction constant = 0.28 |
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767 cruising speed = 240m/s |
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Doing a quick balance of forces, and ignoring the wind resistance of the rope, we get: |
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wind force on bungee dude at equilibrium - 16kN (1.6 tons) -so even the best harness in the world is going to cut into you as if you're doing 16g's, essentially. |
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Angle of rope to horizontal ~ 3.5 degrees |
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Length of rope, if you're 100m above the ground and plante altitude = 30,000 ft (9000m) ~ 145km |
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Power used in dragging you along (=force*velocity) = 4 megawatts (5,300 horsepower) |
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I think it's safe to say my ignoring the rope wind resistance was an invalid assumption - but trust me, it only makes the above numbers more extreme, making the rope even more horizontal. I'm curious about frictional heating of your clothes at those speeds - 4 megawatts is a lot of heat. Perhaps the wind friction is not a constant factor as my assumption ... assumes, but for back of an envelope stuff, normally wind resistance is a roe-v-squared thing. If anyone has any corrections, please chime in - I'm feeling very fallible today, and despite having gone through the above twice, I can't spot the error. |
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Oh, by the way, [marked-for-deletion] bad science. |
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