yuri_base

Who are those people? Are you saying that the best BASE flyers donated their Vampires to Salvation Army and are now flying Apaches? Names, please. The transition from the 45-degree angle of attack, L/D~1.0 "flying" regime which is typical for flocking (nowhere near ~10-degree AoA, L/D close to 3.0 for best pilots) to maxed out glide can produce all kinds of illusions, in which wingloading is one of the major factors. Put up some numbers from BASE jumps. Exit altitude, opening altitude, horizontal distance, weight. You don't even need to spend $75 on GPS. Just use a topo map. Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

Here's an example. Suppose you only have 2 jumpers, A and B. A's time is 90s in the first round, speed is 100mph in the second, and glide ratio is 2.5 in the third. B's time is 75s, speed 120mph, glide 2.5. Their scores will be: A: (90/90 + 100/120 + 2.5/2.5)*100 = 283.3 B: (75/90 + 120/120 + 2.5/2.5)*100 = 283.3 They fly equally efficiently, and the 1.2x difference in their speeds and times is caused by difference in their exit weights: A is 170lbs, B is 245, same size, same suit (sqrt(245/170) = 1.2). So they split the grand prize in half: half the ticket to Stupino, half the helmet, half Paralog, one glove to each, etc. and all is well.

Yo! Adding time and speed points calculated as you describe will produce nonsense scores. If the maximum time across the group of jumpers is tmax and the maximum average speed is vmax, then jumper A will get scoreA = 100*tA/tmax + 100*vA/vmax If jumpers A and B have the same "quality" (aerodynamics-wise), but jumper B has wingloading N times higher than A, his time will be tB = tA/sqrt(N), speed vB = vA*sqrt(N), so he'll score scoreB = 100*tB/tmax + 100*vB/vmax = 100*tA/sqrt(N)/tmax + 100*vA*sqrt(N)/vmax So in general scoreA is not equal to score B (unless some coincidence in numbers). A better system would be to prorate time and speed with the square root of wingloading - time should be multiplied by this factor, speed should be divided by it. Then scoreB = 100*tB*sqrt(N)/tmax + 100*vB/sqrt(N)/vmax = 100*tA/tmax + 100*vA/vmax = scoreA Surface area can be measured by having the jumper lie on a big sheet of paper, making a cutout of his projection and weighing it. Or maybe you can take a picture of jumper against some odd color background and have the computer count the number of background pixels. Producing non-nonsense takes some effort, yeah. Yuri Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

http://www.metacafe.com/watch/704958/ultimate_colored_smoke_bomb/ http://www.metacafe.com/watch/721351/make_a_pull_ring_smoke_grenade/ Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

To the undecided: in these pictures you can really see what flocking is all about. Build the formations during the day - twist male nipples during the night. Join the beautiful world of L/D: perfect your flight in the beautiful mountains during the day - bang beautiful chicks during the night. Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

Hi Doug, I am using a small $2 foldable reading eyeglasses case which is screwed to the mud flap. VISO is attached with velcro to the upper lid. Works great! Yuri Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

Oh yeah? You have to collapse the wings to stay with those skeletons 50-80lbs lighter than you??? Poor you!

I think this is underestimate. L/D can be more accurately estimated by integrating the wingsuit equations and trying to match the horizontal and vertical distance. Using this Excel spreadsheet, for 6666ft horizontally and 2600ft vertically L/D comes to about 3.5. 5000ft horizontally, 2770ft vertically: L/D = 2.5 Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

Lee, what was the vertical drop and horizontal distance Jimmy flew before the impact? Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

I jumped V-2 in sneakers and heavier weights instead of Hanwags and lighter weights and CG effect was about the same. My V-2 is loose even in Hanwags. I agree with your point about the importance of tight fit. Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

I've experimented with shifting CG quite a bit over the past year. (see, for example, "It's not the pilot, it's the shoes!" and experiments with V-2) No doubt, CG has major effect on wingsuit flight. Just try ankle weights for yourself and feel the difference. While everybody's balance is different, I found that wearing Hanwags with Phantom leads to a stall (although flights with Put enough weight on your feet and you'll fly feet first. Lee, can I buy another "Turkey Boogie 2005" shirt? I spilled coffee on girl's breasts. Please PM. Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

Listen, first of all you were born to enjoy life, not to suffer. So think if sweating your ass off at 210lbs flying a smallish suit with skinny guys in big suits in relaxed mode and probably laughing at you is what you want to do. Do you really want to be a Gay Ballet performer? As a scientific experiment, please ask the 180lb guy to put on a 30lb belt and measure his fallrate. Maybe now it will be him posting the question about body position. Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

Many times. Extremely fun toy. Horizontal speed is incredible (~140mph) and glide ratio approaches 1.5. Overall impression after all flights: fun fun fun! Smile from ear to ear. Anyone who has Prodigy and never tried flying pants is a fool!

There are many [fatal or serious non-fatal] incidents outside the U.S. that never get published at dz.com. Why? Because most countries have their own skydiving forums and they don't care about dz.com. They don't have to, so most of the time they don't. For example, there were 4 skydiving fatalities in Russia in the last 6 weeks, but only one is listed on dz.com. That's just how the things are. Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

Is this the order in which jumpers of these countries are unable to track? Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

it's not my video, so I don't know the technical details of it. Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

When shooting with a wide angle lens on HC-1, the picture doesn't look solid when camera is shaking, it looks like a reflection off shaking water (different parts of the picture are moving/shaking at different speeds, giving it unpleasant "liquid" appearance). What causes this? Is this effect caused by electronic image stabilization shifting the picture as a whole and nonuniform distortions from wide angle? Any way to fight this effect other than switching IS off? (setting "wide angle" option in the menu doesn't help) The effect can be clearly seen in this video (shot with some other camera) at about 7:07: http://www.youtube.com/watch?v=qNpcxDytqpA Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

Direct link Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

126s from 11k pulling at 3.5k (exit weight ~230lbs.) And he's just starting... Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

Aerodynamic forces scale proportionally to weight. To tension the wings, a 320lbs jumper would apply twice the force compared to a 160lbs one. It's not the snaps, it's the pilot! Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

He might be right. Starting to fly is very sensitive to pitch angle after exit and how it changes with time. If he is able to nail the most effective angles doing gainers, he will start flying faster. Consider different pitch angles after exit. a) Totally flat with horizon = 90 degree AoA, which results in no lift, only drag. Since the speed in the first 2-4 seconds is almost completely vertical, by definition, the only force that pushes you forward is the lift (the component of total aerodynamic force perpendicular to velocity). So flat = falling like brick. The forward speed builds up very slowly this way. b) Transitioning to almost headdown in the first second. With low AoA, you're close to your max L/D. However, the lift coefficient at small AoA is not that great as at higher angles. You start flying reasonably fast, but it could be better. On the positive side, because you don't dissipate too much energy due to low drag, you have much flatter and speedier planeout and overall will fly the longest distance. c) Somewhere in the middle, ~45 degrees. The lift coefficient is the highest. You start flying very fast initially. On the other hand, drag is also high and you dissipate too much energy. Planeout is weak if at all, the overall distance will suffer. It's also possible to get stuck at 45 degree AoA and get ~1.0 glide ratio. How consistently one can hit, say, 45 degree pitch? With "flat & stable" exit, you need to quickly rotate to 45 degrees down, stop there and then slowly rotate in the opposite direction to maintain 45 degree AoA. One time you'll stop at 30 degrees, another at 70 degrees, etc. Hard to be precise. But if he is consistent with rotational speed of his gainers, he can arrive at 45 degrees more consistently and precisely. Basically, he found what works best for him. Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

In no wind days, you can also use "uphill flare" technique: after you level off and your feet are almost touching the ground and you still have some forward speed, pull the toggles down more (but not below the stall point!) to go 2-4ft up. This will dissipate your kinetic energy as you go uphill. When your forward speed bleeds to almost zero, finish the flare to almost the stagnation point for the tip-toe landing. Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

Actually, this design (really huge armwing and no legwing) can probably work well for feet-first flying, especially on your back. Imagine flying into a cumulus cloud feet first, like in a coffin... Jeff, what do you think? Can you remove the leg wing on your Mach1 and see what happens? Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

Aren't they made from round parachutes? The girl wouldn't even need a rig to jump... just take the clothes off.

Heineken just released their first wingsuit which provides maximum D/L! The revolutionary inlet system is truly breathtaking!!! Every suit is shipped with a Red District girl of your choice and a free 24-pack of Heineken. Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio