yuri_base

Yes. To the place where, according to Outrager, you can fly wingsuit from a new big wall every week and never jump the same wall twice. This is THE Shit! Yuri Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

Robi, what technique do you use to pop-up (i.e. convert some of the insane V-2 forward speed into more lift for a short period of time)? Bending knees, closing the leg wing a little, pushing the grippers down, or something else? Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

Very interesting!

It all depends on available altitude and glide ratio. But usually if you dive and plane out you're fooling yourself when you think that you're "maxing out". The best distance (over the limited altitude) resulted from the dive-induced speed does not imply best L/D. Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

Very interesting Yuri. I have actually always noticed something similar when maxing out my S3 in the sky, and I thought it was just me. Is this observation of yours unique to the V2? I noticed this, too, on V-2. Dropping knees a little improves the glide. By dropping knees, you tame the over-hungry V-2's forward speed and increase the angle of attack, bringing it to more optimal angle. This improves the glide, although the suit actually becomes a bit less efficient. It's a trade-off. Just another manifestation of balance. 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 what I found so far after 15 flights on V-2. V-2 seems to be balanced significantly "nose-down" (at least, for my body). Combined with good glide angle due to good overall aerodynamics of the suit, this results in a rather small angle of attack, giving the suit its tremendous speed. However, the small angle of attack doesn't produce the best glide. It's much like receiving a canopy from the factory with A-B lines 6" shorter than they should be. Effectively, you fly on double fronts without even pulling on them. Lots of speed, but not the best glide. I experimented with ankle weights this weekend and with 7lbs. on my ankles the suit feels much better. Body almost parallel to horizon, less speed, less effort to fly and better glide. Cleared the edge of a cloud field that at first seemed impossible to clear. The suit just wants to fly! Also, the turns are much flatter. I'll experiment with heavier weights to find the stall point. As with any wing, the best glide is rather close to stall. Again, balance is very dependent on body type (even an inch up or down can make a noticeable difference), so YMMV. Yuri Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

FWIW, with barometric GPS (Vista C) it's horizontal "steps" (about quarter or half a mile) due to reflections/interference from the wall that are the problem. Vertical data seems to be reasonably accurate. Overall, the value of data is almost nil. Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

I find my Flik 322 quite responsive to fast inputs. It does toggle-whip 180 on a dime, and riser-stalls instantly, too. It's just flying slow (although at very good glide ratio), and that's what I like about it. The slow turn rate in my cliffstrike was caused by instinctively grabbing the risers near shoulders and not having enough range of motion. Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

Since this is a tower specifically made for parachuting, perhaps it should be exempt to site naming rules. After all, we're just talking about restoration of the tower's original function. Jeez, this tower in hands of a good enterpreneur will be a goldmine. There's nothing exciting, adrenaline rush pumping to do in New York City for an average resident, 8 million of them. Perhaps one of the big DZs in metro area would be interested? A simulated parachute jump will bring more tandems back to DZ... It will then open a door to legal BASE from the tower. Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

Reading bitching between jumping is lot of fun! More bitching + more jumping = more fun Q.E.D.

That altitude is very individual. It depends not only on skill, but on wingloading, too. Wingloading makes a huge difference on when you start to fly. Since vertical speed during initial 2-3-4 seconds is about the same regardless of weight (it's linearly increasing with time: V=g*t), the horizontal acceleration (and hence, horizontal speed and distance) is inversely proportional to windloading factor. (F ~ surface area; a = F/m ~ (surface area)/m = 1/windloading) So, for example, if we have two jumpers of the same size and skill, but with difference in weight 50% (140 and 210lbs), the lighter jumper will travel 50% more in the first few seconds. If you're preparing for a "do it or die" jump using L/D calculations, the only data you can use is your own GPS data from previous flights. Yuri Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

...and the winner is... Halleluiah!!! Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

Sweet! The next step would be to hack firmware and make it sample velocity 10 times a second. Here's an interesting site: http://transportation.hackaday.com/category/gps/ and particularly this idea about using radiosondes as cheap Doppler shift GPS trackers. More info here: http://www.digitaldawgpound.org/nick84/post=130 http://www.digitaldawgpound.org/nick84/post=133 Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

It was a typo. Maggot meant NIPPLES. Like, "is there any thing to flick in the nipples area?" Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

yeah, they will be tensioned very little in full flight and slack when steering lines are pulled. They can also cascade higher than slider grommets, to avoid thick knot at the cascade. The question is, will they really work? If they cascade too high, they won't prevent unpressurized tail go up. However, they still will reduce the extent to which the tail can go up, by the principle that the triangle's side is shorter than the sum of the two other sides. Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

If the center C-D lines had an additional cascade attached to the trailing edge of the center cell (where it's free of steering lines), do you think it will subdue the tail inversion and its ill effects (lineovers and weird bridle wraps)? Just thinking. Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

Death is mother nature's way of telling you, "3...2...1...C-ya! " Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

Michael, Can you regenerate the sound from the recorded data after the flight and post an mp3 file and glide ratio graph here? It would be interesting to hear what you hear. How do you handle the noisyness of glide ratio data? With Vista C, I found that at least 5s running average is needed to provide any meaningful data. Also, when using your setup, wind should be taken into account. Flying into a strong wind favors faster forward speed for better ground glide ratio and that is not necessarily better L/D. Flying approximately perpendicular to wind will greatly reduce the difference between GR and L/D. Yuri Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

Same here (learned it from Miles). Seems to improve heading performance, too. Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

The jumper said the next day that is was an intentional low pull. There was no trouble pulling: you can see in frame-by-frame playback that from the moment he started moving his hand to BOC to PC throw only 0.3s elapsed, which is pretty good for V-1 and BOC. Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

Any information on gear configuration? The opening looks just a bit snively. Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

What a gay nugget! Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

What do you think are your chances of hurting or killing yourself on such 'practice' jump? (consider all things that may transform the situation from 'practice' to real emergency) -- that's X (e.g. X=0.05) What do you think are the chances that this 'practice' will save you on some 'real' linetwist jump? (consider that each emergency situation is different; reflexes are formed by repeatable experiences, performed many times) -- that's Y (e.g. Y=0.2) What do you think are the chances of that 'real' linetwist jump happening? (how often do you get linetwists with your setup and type of jumping?) -- that's Z (e.g. Z=0.01) Is Y*Z much greater than X? Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

Maybe, Tom should create a new sticky, "Ask Jaap your stupid questions!" This way we'll annoy Jaap to the max, which is fun! Hello Uncle Jaap, I'm an avid snowboarder (started snowboarding before I started walking, if I remember correctly). Ever since I was a boy I dreamed of jumping snowboard off of a cliff. I heard that if you use a chute you can actually land on a ledge on the wall. I wanna try that!!! Where can I sign up for lessons? Also, I searched ebay for chute, and I found this high performance one called XAOS (it looks like a kite to me, i did some kitesurfing), should I buy it as a starter kit? Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

Have anyone done a solo paraglider ascent/wingsuit flight?