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The outer edges of the diagram, the envelope, show the possible conditions that the aircraft can reach in straight and level flight. For instance, the aircraft described by the black altitude envelope on the right can fly at altitudes up to about 52,000 feet (16,000 m), at which point the thinner air means it can no longer climb.
China Airlines Flight 006 damaged by going outside its flight envelope to gain control after a drop of 3,000 m in 20 seconds. Flight envelope protection is a human machine interface extension of an aircraft's control system that prevents the pilot of an aircraft from making control commands that would force the aircraft to exceed its structural and aerodynamic operating limits.
The aircraft Mach number at which these effects appear is known as its critical Mach number, or M CRIT. The true airspeed corresponding to the critical Mach number generally decreases with altitude. The flight envelope is a plot of various curves representing the limits of the aircraft's true airspeed and altitude. Generally, the top-left ...
Hence, the aircraft will not have any excess capacity to climb further. Stated technically, it is the altitude where the maximum sustained (with no decreasing airspeed) rate of climb is zero. Compared to service ceiling, the absolute ceiling of commercial aircraft is much higher than for standard operational purposes.
Print/export Download as PDF; ... Pages in category "Aircraft controls" ... Flight envelope protection; Flight with disabled controls;
The aircraft weighs 313 lb (142 kg) empty and can carry a pilot and baggage totaling 250 lb (113 kg). It can accommodate a pilot of up to 6.5 ft (1.98 m) in height. A ballistic parachute comes equipped with the aircraft for use by the aviator in emergency situations. [1] [6] [10] The aircraft is not a tiltwing or tiltrotor design. Instead, the ...