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Old 10-11-2011, 10:20 PM   #76
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Re: Wingsuit base jumping

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They're more in controlled falls than flight
Funny how falling feels like flying...for a little while.

- song from Crazy Heart
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Old 10-11-2011, 10:34 PM   #77
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Re: Wingsuit base jumping

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You cannot gain any altitude while in one of these suits... Unless you happen to have a rocket strapped on your back.
http://www.youtube.com/watch?v=j-66AcTo9TU
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Old 10-11-2011, 10:44 PM   #78
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Re: Wingsuit base jumping

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IIRC his plan was to further develop the wingsuit so he could slow down to even slower speeds then what they currently are able to achieve, and also build a massive ramp and land parallel to the ramp. The ramp would have had to be massive and he was looking for sponsorship, I presume he has failed to get funding although if it ever does go through with it would be insane.
what a retard. simple aerodynamics would show that he'd still have a Vstall high enough to do some serious damage upon landing unless he's the bubble boy with a much higher wing area
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Old 10-11-2011, 10:49 PM   #79
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Re: Wingsuit base jumping

Water slide obviously.
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Old 10-11-2011, 11:01 PM   #80
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Re: Wingsuit base jumping

think of it like when a person on a halfpipe lands in transition and keeps going. Thats kinda what he wanted, personally I think some sort of circus net with with some sort of system so it slows you down from 100mph at a slow enough rate to survive the G's
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Old 10-12-2011, 12:27 AM   #81
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Re: Wingsuit base jumping

would be even cooler with decepticons chasing you
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Old 10-12-2011, 12:46 AM   #82
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Re: Wingsuit base jumping

^
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Old 10-12-2011, 01:36 AM   #83
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Re: Wingsuit base jumping

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the adrenaline let down after that is over must be insane.
believe it or not there is no crash after those huge adrenaline highs because it is immediately followed by a rush of dopamine after you land and the bigger the rush the more dopamine you get after
the only kind of crash you get is physical exhaustion from all the adrenaline
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Old 10-12-2011, 01:46 AM   #84
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Re: Wingsuit base jumping

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The ratio is about 3:1.
3 feet of forward flight for every 1 foot of descent.
You sure? I would have guessed more like 1:1.
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Old 10-12-2011, 01:49 AM   #85
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Re: Wingsuit base jumping

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You sure? I would have guessed more like 1:1.
Depends on the suit, but it is about 3:1 on almost every one.
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Old 10-12-2011, 02:12 AM   #86
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Re: Wingsuit base jumping

What's the airspeed/rate of descent? Could you fly level for a bit, and if so, for how long until stalling? What airspeed would you stall at?
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Old 10-12-2011, 02:42 AM   #87
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Re: Wingsuit base jumping

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What's the airspeed/rate of descent? Could you fly level for a bit, and if so, for how long until stalling? What airspeed would you stall at?
The rate of descent is about 60mph. The forward airspeed is around 80mph. Obviously these speeds can change with the glider's body position, but if the person in the wingsuit is gliding at the standard angle it will be about those speeds.

When I previously stated that you cannot gain altitude I was wrong in a technical sense. You can gain altitude, but it would be for a very short time and your distance traveled would be shortened incredibly and your forward airspeed would decrease dramatically, ldo. If you are BASE jumping this would be a death sentence. If you want to gain altitude while jumping from a plane or helicopter go right on ahead. You could fly level and if you swoop and fly straight and level instead of trying to gain altitude it would be for a longer time, but again I would not suggest it if you are BASE jumping.

When you fly you can fly for distance traveled or for time in free fall. If you want to fly for a long time you would angle your body in an almost flare like motion. If you want to fly fast and a long distance then you would angle your body at a 30-45 degree angle towards the ground.

Stalling is a reduction of lift. This happens when a wing/blade/airfoil exceeds a critical angle of attack (The angle of the chord line to the relative wind) or you reach a certain speed. When you are gliding in a wingsuit there is no lift. If you decide to "swoop" then I would not know the exact speed where you stop ascending. Go on google and research it or go on a skydiving forum.
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Old 10-12-2011, 03:07 AM   #88
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Re: Wingsuit base jumping

How can it have a 3:1 glide ratio if forward airspeed is 80mph and descent is 60mph?

There is lift on any airfoil, especially one that is not accelerating downward. I think you mean that there is no thrust on a gliding windsuit.
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Old 10-12-2011, 03:15 AM   #89
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Re: Wingsuit base jumping

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Originally Posted by sledghammer View Post
How can it have a 3:1 glide ratio if forward airspeed is 80mph and descent is 60mph?

There is lift on any airfoil, especially one that is not accelerating downward. I think you mean that there is no thrust on a gliding windsuit.
I have never flown with a wingsuit and have never taken any courses. I just know what my wingsuit friends tell me. The forward or descent airspeed may be wrong, but the ratio is definitely 3:1 for BASE jumping.

When you fly in a wingsuit you are controlling the speed of descent and forward motion... You are not ascending. That is what I meant by lift. Most people think that you have thrust and can fly like a plane or hangglider. My friends and most average people think that you do not need a parachute with a wingsuit.
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Old 10-12-2011, 03:20 AM   #90
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Re: Wingsuit base jumping

so sick
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Old 10-12-2011, 04:08 AM   #91
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Re: Wingsuit base jumping

somewhere online Jeb has posted his gps for his flights, has glide ration speed ect. I think is falling airspeed is closer to 30mph but 3 to 1 is about right
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Old 10-12-2011, 09:09 AM   #92
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Re: Wingsuit base jumping

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Originally Posted by ntanygd760 View Post
...BASE...BASE....
Quote:
Originally Posted by ntanygd760 View Post
...BASE...
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Originally Posted by ntanygd760 View Post
...BASE...BASE...
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Originally Posted by ntanygd760 View Post
...BASE...BASE...
please stop doing that. you aren't even doing it most of the time, so the times you are it has to be conscious. i know it's an acronym, but please just stop it.
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Old 10-12-2011, 09:42 AM   #93
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Re: Wingsuit base jumping

According to that 60 minutes piece linked earlier in the thread, it's 2:1.
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Old 10-12-2011, 10:04 AM   #94
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Re: Wingsuit base jumping

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According to that 60 minutes piece linked earlier in the thread, it's 2:1.
2:1 is most common from a plane jump. 3:1 is going to be, for the most part, BASE jumping.
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Old 10-12-2011, 10:14 AM   #95
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Re: Wingsuit base jumping

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Originally Posted by ntanygd760 View Post
somewhere online Jeb has posted his gps for his flights, has glide ration speed ect. I think is falling airspeed is closer to 30mph but 3 to 1 is about right
I was googling for one of these trajectory plots and found this wingsuit landing ramp concept: http://www.popularmechanics.com/tech...sans-parachute
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Old 10-12-2011, 10:44 AM   #96
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Re: Wingsuit base jumping

Quote:
Originally Posted by Shelldonahue View Post
Depends on the suit, but it is about 3:1 on almost every one.
Quote:
Originally Posted by Shelldonahue View Post
The rate of descent is about 60mph. The forward airspeed is around 80mph. Obviously these speeds can change with the glider's body position, but if the person in the wingsuit is gliding at the standard angle it will be about those speeds.

When I previously stated that you cannot gain altitude I was wrong in a technical sense. You can gain altitude, but it would be for a very short time and your distance traveled would be shortened incredibly and your forward airspeed would decrease dramatically, ldo. If you are BASE jumping this would be a death sentence. If you want to gain altitude while jumping from a plane or helicopter go right on ahead. You could fly level and if you swoop and fly straight and level instead of trying to gain altitude it would be for a longer time, but again I would not suggest it if you are BASE jumping.

When you fly you can fly for distance traveled or for time in free fall. If you want to fly for a long time you would angle your body in an almost flare like motion. If you want to fly fast and a long distance then you would angle your body at a 30-45 degree angle towards the ground.

Stalling is a reduction of lift. This happens when a wing/blade/airfoil exceeds a critical angle of attack (The angle of the chord line to the relative wind) or you reach a certain speed. When you are gliding in a wingsuit there is no lift. If you decide to "swoop" then I would not know the exact speed where you stop ascending. Go on google and research it or go on a skydiving forum.
Quote:
Originally Posted by Shelldonahue View Post
I have never flown with a wingsuit and have never taken any courses. I just know what my wingsuit friends tell me. The forward or descent airspeed may be wrong, but the ratio is definitely 3:1 for BASE jumping.

When you fly in a wingsuit you are controlling the speed of descent and forward motion... You are not ascending. That is what I meant by lift. Most people think that you have thrust and can fly like a plane or hangglider. My friends and most average people think that you do not need a parachute with a wingsuit.
Quote:
Originally Posted by Shelldonahue View Post
2:1 is most common from a plane jump. 3:1 is going to be, for the most part, BASE jumping.
not really correct about anything
the glide ratio depends on a bunch of factors ranging from the type of suit they are wearing to their height and weight and it is not uncommon to see glide ratios above 4:1 in competitions these days with some of the best pilots
also it does not matter whether or not it is a base jump or a jump from a plane it has almost no bearing on the flight.
the vertical speed is usually somewhere between 30-50 mph and the horizontal speed is usually about 100mph on most jumps but those numbers arent set in stone and can go much lower and higher
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Old 10-12-2011, 10:49 AM   #97
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Re: Wingsuit base jumping

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Originally Posted by pmags88 View Post
not really correct about anything
the glide ratio depends on a bunch of factors ranging from the type of suit they are wearing to their height and weight and it is not uncommon to see glide ratios above 4:1 in competitions these days with some of the best pilots
also it does not matter whether or not it is a base jump or a jump from a plane it has almost no bearing on the flight.
the vertical speed is usually somewhere between 30-50 mph and the horizontal speed is usually about 100mph on most jumps but those numbers arent set in stone and can go much lower and higher
http://www.flylikebrick.com/articles...glideratio.pdf

http://www.phoenix-fly.com/userfiles...dynamics_1.pdf

http://www.phoenix-fly.com/userfiles...dynamics_2.pdf

This is some of the best literature on the subject online.
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Old 10-14-2011, 04:56 AM   #98
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Re: Wingsuit base jumping

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Originally Posted by pmags88 View Post
no way
first you need to do a minimum of 200 skydives before they even let you near a wingsuit and then you are using only the most basic wingsuit and base jumping doesnt really have a number of jumps to do if you find a mentor who will coach you'
also once you start flying wingsuits you will probably need hundreds of basejumps without a wingsuit before you will even think about putting on a wingsuit for a basejump
also you have to be very proficient at flying a wingsuit which entails making a few hundred wingsuit skydives maybe even a thousand to make sure you are good enough. of course you can just put one on yourself and jump but you will just end up another statistic.
so yea it probably takes a few years if you are really dedicated and dont have any expenses and spend all your money on skydiving
here is a nice flowchart if you are interested
http://www.wingsuitschool.com/
fack i want to do this so bad, even though i know its almost impossible.

whats the general consensus on amount of time/$$ it would take to go from not skydiving once to full on wing suit base jumping?
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Old 10-17-2011, 04:29 AM   #99
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Re: Wingsuit base jumping

$50k and maybe 2-3 years. Depends on how many times you get arrested and your rig taken by the police. Lawyers add up fast
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Old 10-17-2011, 06:15 AM   #100
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Quote:
Originally Posted by SleightOfJam View Post
fack i want to do this so bad, even though i know its almost impossible.

whats the general consensus on amount of time/$$ it would take to go from not skydiving once to full on wing suit base jumping?
read the thread.

Edit... great read with some sick vids, I am now interested in this topic.
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