초록 ▼

An automatic flight control system includes an automatic emergency descent mode initiated upon cabin decompression at high altitudes. Automatic safe capture of maximum descent rate and automatic flare to a safe altitude are provided, together with an automatic turn off the course existing at mode in

An automatic flight control system includes an automatic emergency descent mode initiated upon cabin decompression at high altitudes. Automatic safe capture of maximum descent rate and automatic flare to a safe altitude are provided, together with an automatic turn off the course existing at mode initiation.

대표청구항 ▼

In an automatic flight control system for aircraft having a signal-responsive pitch control channel for controlling the aircraft pitch attitude, an automatic emergency descent control apparatus for automatically controlling the descent of the aircraft to a predetermined safe low altitude upon cabin

In an automatic flight control system for aircraft having a signal-responsive pitch control channel for controlling the aircraft pitch attitude, an automatic emergency descent control apparatus for automatically controlling the descent of the aircraft to a predetermined safe low altitude upon cabin decompression at a very high altitude, said emergency descent apparatus comprising: first switch means responsive to the altitude of the aircraft, second switch means responsive to the air pressure within the aircraft cabin, means responsive to said first and second switch means for providing an initiation signal for said apparatus when said aircraft is above a predetermined altitude and when said cabin pressure decreases below its normal pressure, airspeed responsive means for providing a control signal corresponding to a maximum operating airspeed for said aircraft, and means responsive to said initiating signal for supplying said airspeed control signal to said pitch control channel for controlling the craft pitch attitude to achieve said maximum operating airspeed.