yuri_base

Considering that he hit the snow vertically at 72mph head first and got away with a cut lip, we now know who can land a wingsuit and get away with a scratched nose. Interestingly enough, Jesus rejected the temptation to BASE jump. Therefore, BASE jumpers are Satan's followers. Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

"Salt Lake City skier Jamie Pierre claimed a world-record cliff jump at Grand Targhee Resort on Wednesday, flying 245 vertical feet off the back of Freds Mountain." "Pierre said a prayer before taking off. He clocked four full seconds of air time. He landed head first and blew a hole six feet deep in the snow. Jamie pretty much walked away with a cut lip." "“It wasn’t just some yahoo stunt,” Pierre said. “I chose to do it so it would open up doors so I could witness my faith in Christianity.”" http://forums.epicski.com/showthread.php?s=311b33b7ec84bfc0950dd098f164b2a5&t=36208 http://www.jacksonholenews.com Jesus saves Pierre on a 180ft jump: http://hem.passagen.se/skidor/filmer/jamie_pierre_55m_www.freeride.nu.wmv Yuri Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

Brian, What is your recommendation for a situation when there's a large gradient of windspeed in a thin layer (wind shear) and you need to turn 180 into final approach? E.g. from 25mph downwind layer upwind into 10mph ground layer. Besides the turbulence in the shear layer, there will be a sudden loss of lift caused by the abrupt change in airspeed. What's the best way to handle this sudden dive? Thanks! Yuri Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

ROTFLMAO!!! Seeing this Circus resurrect made my day. God bless Internet! I hope there's Internet after death, the entertainment is just too good. Thanks for your hard work. Yuri Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

Privet, Alexander! It would be too CPU-expensive to actually solve differential equations to simulate tracking. Here's far simplier, yet realistically looking approach. Based on empirical data, we can draw an approximate dependence of vertical and horizontal acceleration on time, Av(t) and Ah(t). We know that at t=0, the vertical acceleration is equal to G=9.8m/s^2, since the only force acting on body is gravity (assuming launch with minimum air speed). We know empirically that the equilibrium speed is achieved in about 10s, so acceleration is [almost] zero at that time. Also, the rate of change of acceleration both at t=0 and t=10 is zero. Finally, the total area under Av(t) curve should be equal to the equilibrium vertical speed Vv(10), which can be from ~110mph to ~80mph, depending on jumper's weight and build and tracking ability. We now have two points, Av(0)=G and Av(10)=0, two derivatives, Av'(0)=0 and Av'(10)=0, and an integral Integral(Av(t)dt)=Vv(t). We can simply draw a smooth half-bell shaped curve Av(t) based on this data, for example, using a 4th order polynomial (5 equations for 5 coefficients). Similarly, for horizontal acceleration, we have Ah(0)=0, Ah(10)=0, Ah'(0)=0, Ah'(10)=0, Integral(Ah(t)dt)=Vh(t), where Vh is connected to Vv by the glide ratio, Vh/Vv=GR (which can be chosen in the game based on jumper's tracking skills). Again, we appoximate the bell-shaped curve with a polynomial. Once we have Av(t) and Ah(t), we can integrate them over time to obtain vertical and horizontal speeds at any given time, and integrating velocity will give you position. Using polynomials or other simple functions will allow you to do integration analytically and calculate speed/position at any given time by simply plugging the time into a formula, instead of wasting CPU cycles for numerical integration. Yuri P.S. Hint: you can assume that for an average norwegian, glide ratio Vh/Vv=1.5. For a skilled fat american, Vh/Vv=0.5. Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

LOL Tony, brilliant! You're totally sweet, too! Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

70-200 f/2.8 IS is a great lens. It's not only about resolution, but the color and clarity of the image. You get the images that are distinctly clear, colorful, defined. Shooting at f/2.8 or f/4 allows you to blur background nicely. No IS is a no-go for long focal lengths, when you shoot handheld and in low light. IS allows to use shutter speeds 4-8 times slower than without it. Besides, girls DIG big white lenses. Yuri Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

I'll be there, will have no other clothes but red Phantom decadent costume. Yuri Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

Yo! I took FJC with Jimmy and Marta and can wholeheartedly recommend it. They are totally sweet. You'll have the best time of your life with them. For me, they are my BASE parents. And for them, you'll be their BASE kid.

This surprising nonlinearity is similar to that of slider down openings: the hardness of the opening is not proportional to delay (where delay = time from jump to line stretch), but to the cube of it. Kinetic energy is proportional to the square of speed, and the amount of time it takes to dissipate that energy is reversely proportional to speed (as the characteristic time it takes to displace water/air masses is equal to characteristic length -- of your body for water jumps or of the parachute for BASE -- divided by speed). The damage to your body is determined by the rate of dissipation of energy. So, for 4s delay (pull at 3s, plus ~1s for line stretch) the opening is approx. 8 times harder than for 2s delay (pull at 0.5s + 1.5s for line stretch). When we deal with something we have never experienced before, our intuition tends to extrapolate prior experiences linearly, while it may be in fact highly nonlinear (another example of this - discussion of the safe height to clear platform on antenna not long ago). Elementary physics oftentimes can save an ouch or two. Yuri Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

Yo! With a wide-angle lens, definitely go with the manual focus. The thing is, for wide angle, the hyperfocal distance is quite short. (hyperfocal is the distance from the half of which to infinity all objects appear sharp withing the circle of confusion, which is the maximum accepted unsharpness for your intended use of the photo.) The marks on your lens are approximate. The real infinity focus depends on temperature and lens/camera calibration. If you really want to learn the technical side of photography, you may want to check out the forums at dpreview.com. Here, there doesn't seem to be much useful techinical info. Yuri Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

Yes, yes, yes. (helicopter, balloon, high antenna) Yuri Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

Plane, helicopter, balloon. I only recorded one flight with GPS and got 1.15 glide ratio with about 140mph horizontally. While wingsuits feel 'lifty', Prodigy pants feel 'thrusty'. Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

Try flying Prodigy's bottom half. It's like tracking on Viagra! Yuri Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

"DVDn og piratkopiere til alle har fatt sitt" (from onheading.com) My translation: you fat Americans who can barely move forward, spread the love, make pirate copies of our DVD!

Spread the love! If anyone can do it, please PM. Thanks! Yuri Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

Welcome to the club, bro! Glad you're ok. Perhaps, in 10 years from now, the technology will advance so far as there will be a new fun thing to do -- "parachute-assisted rappelling". You pack your ultralight and ultracompact 1000sq.ft. vented canopy with air locks with an intentional 180, dress in airbag-enhanced carbon fiber body armor, and gently bounce off the cliff to the talus. Yuri Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

Yo! I second your ideas. The traditional WS design with wide-spread inflated arms creates too much drag and bad balance (read: too high angle of attack, 20-30 degrees - too inefficient for a wing with aspect ratio of the human body). Basic aerodynamics it is. A wingsuit with very large leg wing (V1-style, but wider), smaller arm wing (arms at ~45 degrees to the body), with tight non-inflatable arm/leg sleeves will reduce drag and shift the balance to head-low, thus reducing the angle of attack to more efficient one. Imitating flying squirrels is a 20th century thing, after all. Yuri Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

If you flyby in front of a slow canopy at ~90 degrees to its flight, keeping the tangential closing speed zero (that is, the component of your velocity in the direction of canopy's flight is equal to its speed), in max-glide position, and aim below the canopy, there is absolutely, physically, NO WAY to endanger anybody. If you're in control, the canopy can't reach you (unless tandem master and passenger both pull the fronts with all their might to miraculously achieve horizontal speed beyond your range). If you lose control, you end up tumbling below as you lose your max glide. Well calculated buzz is safer than the rest of skydiving. As outrager said, the rest is just 'fear factor' (which should be respected - just be selective on whom you buzz). This approach also allows the 'buzzees' enjoy (if they can) the full view of your flight and your incredible speed and glide, while the buzzer can take a cool shot of [seemingly dangerous] 'stunt'. Yuri Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

1-Voodew1 (TX) 2-Professor (TX) 3-FlyinBob (TX) 4-Buried (IL) 5-The111 (LOCAL!) 6-Skyflyingbecca (FL) 7-Moonglo (TX) 8-Luminous (TX) 9-unclecharlie95 (ITALIA) 10-Base733 (UT) 11-nathaniel(IL) 12-HELMUT (Tatooween) 13- OmarPR (LOCAL) 14-RobertPecnik(CROATIA) 15-Purple Mike(Earth) 16-Costyn (NL) (very likely) 17-Matt (GA) 18-Joni (NE) 19-Yuri (Russia-USA) Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

Johnny, do you recommend reducing the strength of the throw when using super mushroom? Can a too vigorous throw combined with fast inflation of super mushroom anchor the PC on the side, leading to offheading? Thanks Yuri Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

Yo! Me, too. 1. gadget (NL) 2. Jari (FI) 3. Jussi (FI) 4. B.J. Alexander (USA) 5. Scary Perry (USA) 6. MCordia (NL) 7. Medusa (COL) 8. Costyn (NL) 9. Joni (USA) 10. 11. Vincenzo (ITA) 12. Tristan (NL/ITA) 13. FeetFlyer (S) 14. Valery Rosov (RUS) 15. Matt Wells (USA) 16. 15 confirmed Russians (names coming soon) 31. Herwig Habenbacher (Austria) 32. Allan Fox (USA) 33. Fish (Switzerland) 34. Kalapala(India) 35. lego (Estonia) 36. Skyflyingbecca (USA) 37. Bo Wienberg (DK) 38. Giulio Petroccione (ITA) 39. Frits Jensen (DK) 40. Hanne Soerensen (DK) 41. Marco Pistolesi (ITA) 42. Macca (UK) 43. Fabrizio "Chiller" Fontanesi (ITA) 44. 45. 46. 47. 48. 49. 50. Yuri 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 like being born, whoooohoooooo!!!" Congratulations, Tom & Cheri! Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

Climb it with GPS to accurately measure the profile, overlay the profile of your track from a 'good' big wall and see if the two curves intersect. Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio

Yo! Yes. Recently, after giving a wingsuit rodeo ride to Mother Teresa in Eloy, I had an insta-canopy. Not a second, not a half-second opening. Instant. (Spectre by the way, with Spectra lines.) I was surprised that I didn't even have a sore neck (I was wearing a heavy camera, too.) The last thing recorded on video (camera was pointing backwards) was PC at bridle stretch. Yuri Android+Wear/iOS/Windows apps: L/D Vario, Smart Altimeter, Rockdrop Pro, Wingsuit FAP iOS only: L/D Magic Windows only: WS Studio