|
|
#81
10-22-2007, 01:48 AM
|
|||
|
|||
Re: No parachute skydiving prop bet?
[ QUOTE ]
[ QUOTE ] [ QUOTE ] I saw a video where a guy did this holding onto a parachute strap back in the day. It was probably fake or something because I don't think its possible to hold on when it comes out. [/ QUOTE ] I think you are talking about this stunt done by Greg Gasson. He has done this one may times and I can assure you he is not an idiot. http://www.guzer.com/videos/jumping_with_no_chute.php [/ QUOTE ] That's [censored] crazy [/ QUOTE ] meh, I thought it was lame. So what he doesnt have the chute on his back, its still attached to his wrist, so its not like hes just holding on. 
|
|
#82
10-22-2007, 01:51 AM
|
|||
|
|||
|
Re: No parachute skydiving prop bet?
[ QUOTE ]
[ QUOTE ] I saw a video where a guy did this holding onto a parachute strap back in the day. It was probably fake or something because I don't think its possible to hold on when it comes out. [/ QUOTE ] I think you are talking about this stunt done by Greg Gasson. He has done this one may times and I can assure you he is not an idiot. http://www.guzer.com/videos/jumping_with_no_chute.php [/ QUOTE ] The video is real, albeit a little deceiving. He is wearing a harness underneath his clothes and there is a lanyard coming out one of his sleeves that connects him to the rig. I think a terminal Mr. Bill is possible. If you could get your arms underneath the main lift web of your partner's harness, I think you could hang on. Hopefully it would not break your arms. I was once caught on my way to the plane with my chest strap misrouted and had dreams for months afterward about trying to do this.
|
|
#83
10-22-2007, 03:23 AM
|
|||
|
|||
|
Re: No parachute skydiving prop bet?
[ QUOTE ]
you double the force of gravity.. so assuming the bv^2 model, the speed increases by sqrt(2) or like 40%. [/ QUOTE ] wont air resistance for 2 poeple be 2x as great as it was for 1 person? Assume 2 cases with 2 people falling out of an airplane. in case 1, the 2 people are holding hands in case 2, the 2 people are falling right next to each other but not holding hands are you saying in case 1 that they will fall faster then in case 2?
|
|
#84
10-22-2007, 03:30 AM
|
|||
|
|||
|
Re: No parachute skydiving prop bet?
Air resistance is a function of air density, velocity, and surface area. So it really depends on how the people are falling, but if it's two guys grabbing each other like a tandem jump without a harness, it's doubtful that the reference surface area will be double that of a single person. Two guys next to each other are slightly harder, there's probably some interference between the two so there's less drag, like how a biplane does not equal two seperate wings, but it would be closer to two people. Damn, this is way too serious for BBV.
|
|
#87
10-22-2007, 10:32 AM
|
|||
|
|||
|
Re: No parachute skydiving prop bet?
[ QUOTE ]
[ QUOTE ] you double the force of gravity.. so assuming the bv^2 model, the speed increases by sqrt(2) or like 40%. [/ QUOTE ] wont air resistance for 2 poeple be 2x as great as it was for 1 person? Assume 2 cases with 2 people falling out of an airplane. in case 1, the 2 people are holding hands in case 2, the 2 people are falling right next to each other but not holding hands are you saying in case 1 that they will fall faster then in case 2? [/ QUOTE ] pretty sure you just reach terminal velocity in both cases. more importantly, point break was still amazing.
|
|
#88
10-22-2007, 10:48 AM
|
|||
|
|||
|
Re: No parachute skydiving prop bet?
would I be allowed to wear a wingsuit so in case I fall off and have to die I can at least have an awesome flight down?
and would I be allowed to use drugs?
|
|
#89
10-22-2007, 12:54 PM
|
|||
|
|||
|
Re: No parachute skydiving prop bet?
[ QUOTE ]
[ QUOTE ] So in attempt #1 the guy died but somehow the footage was still salvaged? I don't buy it... [/ QUOTE ] They had a chute on the guy holding on, obv. [ QUOTE ] Phil, air resistance is gonna be about the same, but the force of gravity is twice as strong with two people. [/ QUOTE ] Im not going to insult you Noah, if you were some random 5 post person i might. I also accept you might have been levelling. Its been a good few years since i studied physics for all of 1 year, ignore everything below if you dont care bout random crap. Gravity is a constant force on the earth and an object accellerates according to the constant force of gravity pulling it down and the force of friction (air resistance) which works 'against' gravity lowering its effect. Mass, and therefor weight as weight is mass times the gravity, is irrelivent to acceleration and terminal velocity. The reason it might be different with two people is because they are holding onto each other their air resitance might be increased. So whilst they might have a lower terminal velocity relative to each individually they will never have a higher one - all things being equal. [/ QUOTE ] You have no idea what you are talking about. I am not a physics expert. But I do know that a pair of people on top of one another will fall much faster than a single jumper. Have you ever seen a tandem jump done (i have done a 1200 tandems as an instructor) we use a drouge chute to slow our decent rate to that of a normal jumper which is around 120mph. The reason the two fall faster is there is more weight and less resistance.
|
 |
|
|
Linear Mode
