On Sat, 15 Mar 2003 17:12:26 -0000, "Jim Wilson" <[EMAIL PROTECTED]> wrote in message <[EMAIL PROTECTED]>:
> David Megginson <[EMAIL PROTECTED]> said: > > > Curtis L. Olson writes: > > > > > That got me down to 258'. I tried dead stick, came in a bit > > > short, but managed 182'. Then I tried full throttle and a 90 > > > degree glide slope, but I wasn't sure if you are supposed to > > > measure from the furthest piece, or the center of gravity. > > > > Try bringing it across the (imaginary) fence at about 50-55 kt and > > 10 ft AGL with full flaps and idle power, then keep descending and > > slowing by raising (yes, raising) the nose. As soon as you're over > > the threshold pull the nose right right up to the stall to plant the > > mains firmly on the runway, then brake aggressively while holding > > full back pressure on the elevators to keep the weight on the mains. > > > > Ideally, you want to hear the stall horn just as the wheels touch > > the runway, and you'll have under 40kt to kill off in the ground > > roll. I can manage about a 350 ft ground roll this way, stopping > > just at the top of the runway numbers (not quite as impressive as > > Curt's parking-brake-on landing, I'm afraid). > > > > Below is my output. This was about the fourth try. Idle power, no > flaps until I got down to maybe 200-300ft, then added flaps in about > 3-5 second intervals per notch. Flared a stall after crossing the > treshold. Used full brakes, and might have held the elevator in the > stalling position (can't remember). > > Note that with stall my nose wheel touched simultaneously with the > right main, the left trailing shortly. I'm not sure how to read the > "sink rate" or"contact force" values. Did I break anything? ..you hit nose first, on contact forces, compare with the aircraft's weight, Brutus. ;-) > Best, > > Jim > > > Touchdown report for NOSE > Sink rate at contact: 12.0848 fps, 4.1185 mps > Contact ground speed: 44.9094 knots, 25.8314 mps > Maximum contact force: 7338.5112 lbs, 32641.6977 Newtons > Maximum strut travel: 7.6326 inches, 19.3869 cm > Distance traveled: 262.0934 ft, 89.3214 meters > > Touchdown report for LEFT_MAIN > Sink rate at contact: 10.5799 fps, 3.6056 mps > Contact ground speed: 44.7461 knots, 25.7375 mps > Maximum contact force: 17012.9555 lbs, 75673.6262 Newtons > Maximum strut travel: 1.5695 inches, 3.9864 cm > Distance traveled: 261.4691 ft, 89.1087 meters > > Touchdown report for RIGHT_MAIN > Sink rate at contact: 11.3789 fps, 3.8779 mps > Contact ground speed: 44.9094 knots, 25.8314 mps > Maximum contact force: 18487.3014 lbs, 82231.5166 Newtons > Maximum strut travel: 2.4392 inches, 6.1955 cm > Distance traveled: 262.0934 ft, 89.3214 meters > > > > _______________________________________________ > Flightgear-devel mailing list > [EMAIL PROTECTED] > http://mail.flightgear.org/mailman/listinfo/flightgear-devel > -- ..med vennlig hilsen = with Kind Regards from Arnt... ;-) ...with a number of polar bear hunters in his ancestry... Scenarios always come in sets of three: best case, worst case, and just in case. _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
