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The ball's movement is caused by the force of gravity and the aircraft's centripetal acceleration. When the ball is centered in the middle of the tube, the aircraft is said to be in coordinated flight. If the ball is on the inside (wing down side) of a turn, the aircraft is slipping.
Some light twin-engine airplane pilots place yaw strings on their aircraft to help maintain control in the event of an engine failure, because the slip-skid indicator ball is not accurate in this case. [16] In a multiengine airplane with an inoperative engine, the centered ball is no longer the indicator of zero sideslip due to asymmetrical ...
The Cooper-Harper Handling Qualities Rating Scale [1] (HQRS), sometimes Cooper-Harper Rating Scale (CHRS), is a pilot rating scale, a set of criteria used by test pilots and flight test engineers to evaluate the handling qualities of aircraft while performing a task during a flight test. The scale ranges from 1 to 10, with 1 indicating the best ...
1/4 looping up, straight vertical (full power) until the aircraft loses momentum. The aircraft falls backwards, tail first, until the nose drops through the horizon to a vertical down position. 1/4 loop (push or pull) to recover to level flight. Snap Roll; Flick roll; Flick Snap roll; Flick roll; Flick
If the aircraft gets dangerously low, the ball appears red. If the aircraft gets too high, the ball appears to go off the top. Wave-off lights – red flashing lamps which, when lit, indicate that the pilot must add full power and go around – a mandatory command. When the wave-off lights are lit, all other lamps are extinguished.
Aircraft sideslip angle. A slip is an aerodynamic state where an aircraft is moving somewhat sideways as well as forward relative to the oncoming airflow or relative wind.In other words, for a conventional aircraft, the nose will be pointing in the opposite direction to the bank of the wing(s).
It took five years for the ZAZ trio to get Airplane!off the ground, and during that time all kinds of actors were considered for crew and passenger positions aboard the doomed aircraft.
United Airlines Flight 232, a McDonnell Douglas DC-10, on 19 July 1989. A fan disk in the No. 2 engine fractured, severing most of the flight controls. Dennis Fitch, a deadheading DC-10 instructor who had studied the case of JAL Flight 123, was able to help the pilots steer the aircraft using throttle differential. Despite the break-up of the ...