Door operating mechanism for opening and closing an aircraft doo

Details Door operating mechanism for opening and closing an aircraft doo Door operating mechanism for opening and closing an aircraft doo

1992-11-13

1993-10-12

Huppert, Michael S.

Aeronautics and astronautics

Aircraft structure

Details

49141, B64C 114

Patent

active

052518515

ABSTRACT:
An operating mechanism for an aircraft door performs all the door motions and locking operations for the opening and closing of the door with the aid of electric motors which operate the respective elements of the mechanism through gear drives or through spindle drives to provide the power or torque moment for the respective motion. The motion sequence of the door operation is stored as a respective program in a memory of a central processing unit which in turn operates the electric motors in accordance with the programs. Operator initiated control signals are also provided to the central processing unit through respective panels. The pressurization and depressurization of the aircraft cabin is integrated into the door control so that pressurization cannot take place unless the doors are fully closed and locked and so that door opening cannot take place until depressurization is completed.

REFERENCES:
patent: 4680891 (1987-07-01), Perkins
patent: 4720065 (1988-01-01), Hamatani

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