kevin922 0 #1 July 11, 2002 Hey quick guys put it on TBS and watch the show that is called worst case scenerio.. at some point in the show they are going to show what you do when a "skydive goes wrong" -- i'm interested to see how they screw this one up. On the "what do you do if you have to jump from an 8 story building" bit they showed jumping into a dumpster and landing on your back.. what do you guys think about that? Seems to me you should PLF that landing not try and endup hitting on your back first.. I'm taping it so I might can grab some video off it later. Kevin Quote Share this post Link to post Share on other sites
kevin922 0 #2 July 11, 2002 OKay - just saw it. For those of you who didn't, it was video from an actual skydive somewhere in Penn I believe. A jumper exits a cessana with a x-way (I think a 4 way) and his jumpsuit (foot) gets caught on the step of the cessena putting him in tow with the aircraft. (Can't believe the jumpsuit was that strong but hey, skydivers make good shit .. ) Anyway, they ended up landing the plane with the guy hanging underneath the wheel (yes folks that means he hit the ground first).. did it on a grass strip and he walked away with minor injuries. The question I have is this: They stated that the skydiver had a safety device (AAD) which would deploy the chute if it got below 750 feet going faster than 88 mph. They made a big deal how the pilot had to slow the aircraft down below the 88 mph in order to keep the chute from opening. How does the AAD determine speed? I guess if the skydiver is hanging straight down and the wind is hitting him at 88 MPH then the AAD calculates 88 MPH correct? Or does it somehow figure out vertical speed so if the plane isn't going 88 MPH down then it is okay? My initial reaction was that the plane had to have a vertical speed of 88 MPH in order to activate it, but when I started thinking about it I guess the AAD has no way of known if the wind hitting it is due to a skydiver hanging outside on the step or not. Anyway, is that skydiver a DZ.com member? Quote Share this post Link to post Share on other sites
Jimbo 0 #3 July 11, 2002 QuoteThey made a big deal how the pilot had to slow the aircraft down below the 88 mph in order to keep the chute from opening. How does the AAD determine speed? I guess if the skydiver is hanging straight down and the wind is hitting him at 88 MPH then the AAD calculates 88 MPH correct? Or does it somehow figure out vertical speed so if the plane isn't going 88 MPH down then it is okay? The AAD uses barometric pressure to determine vertical decent speed. It doesn't know a thing about horizontal (forward) speed. By the way, the Cypres fires at a vertical speed of 78MPH - for whatever that's worth. I'm not a pilot, but I imagine that a Cessna doing 78MPH vertical speed at 750ft is in some serious trouble. Am I wrong? - Jim"Like" - The modern day comma Good bye, my friends. You are missed. Quote Share this post Link to post Share on other sites
PhreeZone 20 #4 July 11, 2002 78 mph at 750 feet in a 182 is very do able, but not highly advised. I'be been in one at about that speed before. Cypres could care less if you are in a track or getting drug behing an f-16 on your skyboard... unless the pressure reads a decent of 78 mph at 750 feet or faaster... it will not fire.Yesterday is history And tomorrow is a mystery Parachutemanuals.com Quote Share this post Link to post Share on other sites
pilotdave 0 #5 July 11, 2002 Quote78 mph at 750 feet in a 182 is very do able, but not highly advised. I'be been in one at about that speed before. Ummmm, 78 mph is equal to 6864 feet/min. Thats a HELL of a decent rate for a 182 at ANY altitude, let alone 750 feet. Just for a reference, that's equivalent to a 110 mph dive at 45 degrees. Dunno about you, but I don't think a 182 has any bidness doing that at 750 feet. Not that it's impossible, but very unlikely. Now an america west plane, maybe... Dave Quote Share this post Link to post Share on other sites
drenaline 0 #6 July 11, 2002 QuoteOn the "what do you do if you have to jump from an 8 story building" bit they showed jumping into a dumpster and landing on your back.. what do you guys think about that? Seems to me you should PLF that landing not try and endup hitting on your back first.. to add a few cents: If you PLF you have more chances of braking your legs cause you are going down only, but if you land on your back you will transmit all the weight and energy to all your body not just 2 legs, 2 hands, head etc. The more area you give, the less the injury will be. PLF is something like that, you transmit the force from your feets to your thigh to your arm to your shoulder. In a more clear way, you share the impact with the rest of your body, and cause of that you reduce it as well. I have no idea if you can understand what I just tried to say. Damn english, gotta practice some more. HISPA 21 www.panamafreefall.com Quote Share this post Link to post Share on other sites
colossus 0 #7 July 11, 2002 I was watching it last night as well... other than scaring the shit outa my wife that this MAY, how ever unlikely happen, what would you have done to get out of this situation. I think that something like this is extremely unlikely, and if my foot did get caught, I am sure the suit would have ripped. I am sure that this guy who got caught takes up a knife with him from now on! Quote Share this post Link to post Share on other sites
