kallend

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Everything posted by kallend

  1. A ring sight that shows concentric rings (usually and incorrectly called Newton rings) that move with the wearer's head to stay centered on the target is a complex piece of optical engineering, involving multiple layers of polarizing media ("polaroid") and optically anisotropic media (such as calcite) cut perpendicular to its optic axis. The thickness of the layers is critically important. I doubt that it's an easy do-it-yourself project. (I used to teach this stuff)
  2. Nobody reading this thread has seen you jump or land a canopy. Your instructor has. I suggest you follow your instructor's recommendation.
  3. "Not gonna do it, wouldn't be prudent" - Dana Carvey "Prudence is the disciplined use of wise and careful foresight" - after Aristotle. ... The only sure way to survive a canopy collision is not to have one.
  4. The web site has been updated: Clicky ... The only sure way to survive a canopy collision is not to have one.
  5. WOULD, COULD, SHOULD not "wude, cude, shude" ... The only sure way to survive a canopy collision is not to have one.
  6. My Altitrack has started behaving erratically. The battery is fine so it's not that. The digital readouts on the back are OK, but the analog needle on the face goes (consistently) to the wrong place, about 4,700ft, when I turn the unit on. If I remove and replace the battery, the needle ends up consistently around 16,000ft. If I reset the unit the needle goes all the way around the face and ends up consistenly in the wrong place. I have discovered that the following sequence gets the needle to the zero: reset, turn the unit off, turn it on again. It then stays correct for the rest of the day, but after it shuts down, the next morning when I turn it on the needle goes back to 4,700ft ????? ... The only sure way to survive a canopy collision is not to have one.
  7. Freeflyer. Wingsuiter ... The only sure way to survive a canopy collision is not to have one.
  8. kallend

    6 June 1944

    Allied Troops landed in Normandy: 156,115 US (Omaha and Utah beaches incl. airborne): 73,000 (23,400 airborne) British (Gold and Sword beaches incl. airborne): 61,715 Canadian (Juno Beach): 21,400 Aircraft support: 11,590 Aircraft lost: 127 Naval Vessels in the landings: 6939 Combat ships: 1213 Landing craft: 4126 Ancillary craft: 736 Merchant vessels: 864 Personnel in Operation Neptune (the landing operations) American: 52,889 British: 112,824 Other allied: 4988 By 11 June (D+5) 326,547 troops and 54,186 vehicles had landed. ... The only sure way to survive a canopy collision is not to have one.
  9. I have a week in the FL Keys coming up. Any recommendations for SCUBA sites? ... The only sure way to survive a canopy collision is not to have one.
  10. www.freak-brother.com ... The only sure way to survive a canopy collision is not to have one.
  11. Gainer exit in a wingsuit from a tailgate. ... The only sure way to survive a canopy collision is not to have one.
  12. Has anyone experience with the Pilot7? And if so, what do you think of it, and the various fabric options? ... The only sure way to survive a canopy collision is not to have one.
  13. Screw the "sweet 16". The oldest college sporting rivalry in the world is the.... Oxford vs Cambridge Boat Race. www.euronews.com/2018/03/24/cambridge-dominate-oxford-in-164th-boat-race ... The only sure way to survive a canopy collision is not to have one.
  14. Humans are trashing our home planet. I was diving some 70 miles offshore from Dominican Republic in the Atlantic last month, and there is plastic garbage to be seem even there. ... The only sure way to survive a canopy collision is not to have one.
  15. OK, problem solved. The Android device has a SD card in a slot. On a whim, I removed the SD card and tried pairing again. This time it behaved normally and the keyboard paired OK. Go figure! ... The only sure way to survive a canopy collision is not to have one.
  16. Some devices use 000000 as the default. It's always worth a shot. It specifies the PIN to enter, different on each attempt. But I can try 000000, can't hurt. EDIT: That didn't work either. ... The only sure way to survive a canopy collision is not to have one.
  17. Unfortunately the iPhone won't control my R/C models. The Android device is an R/C transmitter: www.spektrumrc.com/Products/Default.aspx?ProdID=SPMR12000 ... The only sure way to survive a canopy collision is not to have one.
  18. I have an android device (an R/C transmitter) to which I am trying to pair a Bluetooth keyboard (Logitech 380). The device identifies the keyboard and requests me to enter a 6 digit PIN on the keyboard in order to pair. It then times out after 5 seconds! Occasionally I have managed to read the PIN, transfer attention to the keyboard, enter the 6 digits + "Enter" within 5 seconds, and even then the Android tells me the PIN is incorrect. The keyboard pairs just fine with my iPhone, no PIN needed. The Android device also pairs just fine with a Bluetooth speaker. Any suggestions? ... The only sure way to survive a canopy collision is not to have one.
  19. I knew him in college when we were grad students. ... The only sure way to survive a canopy collision is not to have one.
  20. Can any Android user recommend a text-to-speech app that doesn't sound like Stephen Hawking's speech synthesizer imitating different accents? ... The only sure way to survive a canopy collision is not to have one.
  21. Sorry, that is just evasion. An object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force. The path over the ground establishes the motion and speed, and the wind shear sets up the unbalanced force. Do the math. ... The only sure way to survive a canopy collision is not to have one.
  22. Explained in great detail in the thread previously linked. And you never answered this question: "What happens if you are flying on a heading of 360 in a 150kt wind from 090 and rapidly descend into a layer of 20kt wind from 090? No autopilot, hands off the controls." Break out your E6B which you probably last used 18,500 flight hours ago and do some vector algebra. And don't forget Newton's 1st Law. ... The only sure way to survive a canopy collision is not to have one.
  23. When was the last time the wind was constant all the way from opening altitude to the ground? ... The only sure way to survive a canopy collision is not to have one.
  24. NEWTON'S FIRST LAW. Think about it. You may have thousands of flight hours, but Newton has yet to be proved wrong in non-relativistic or non-quantum situations. ... The only sure way to survive a canopy collision is not to have one.
  25. . Nothing to do with that. The vertical tail causes the nose of a plane to turn into the relative wind. So if the relative wind is coming from the side, the plane will turn towards that side. ... The only sure way to survive a canopy collision is not to have one.