Bill Galbraith wrote:
Having flown on the 737 a bit, I think it is one of the many aircraft where settingI'm working on getting DATCOM to produce aero coefficients for the various types of symetrical devices, including leading edge flaps.
Can anyone tell me how the leading edge flaps (or leading edge devices, as they are called) on the Boeing 737 are scheduled. Are they controlled only by the FLAPS handle, which would control both the leading and trailing edge flaps?
Ideally, what I'd like is to know for each flap handle setting, the
deflection in degrees of the leading and trailing edge flaps.
the flap position more than some amount down (like 5 degrees) causes the leading
edge slats to extend fully. I believe in all Boeing aircraft there is not supposed to
be any partial slat deployment.
I seem to recall a 727 incident where it was suspected that the pilots had done
some funny business involving pulling circuit breakers for the flaps/slats control
system to partially extend the LE slats (termed the "Boeing maneuver") in
flight. This was supposed to produce a supercritical wing profile and increase
the cruise airspeed. As they burned fuel, however, the changing CG versus center of lift
caused them to end up nose down at 900 knots! The pilot extended the landing
gear at 900 knots to slow the plane and regain control. It really trashed the
airframe.
Jon
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