Engine parameter activated airplane exit locking system

Details Engine parameter activated airplane exit locking system Engine parameter activated airplane exit locking system

1997-10-15

1999-11-16

Wesson, Theresa M.

Aeronautics and astronautics

Aircraft structure

Details

B64C 114

Patent

active

059842342

ABSTRACT:
An aircraft locking system (11) is provided that avoids inadvertent or deliberate operation of an aircraft exit opening means (50) during take-off roll, in-flight, or during landing. The aircraft locking system includes means for determining whether engines of the aircraft are running (12), means for determining thrust lever position (14), means for determining whether the aircraft is in an air mode or a ground mode (16), and means for determining whether a predetermined number of service/entry doors are closed (18). Means for generating a lock/unlock signal (32, 40) are responsive to the engine running determining means, the thrust lever position determining means, and the service/entry door-closed determining means.

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patent: 5251851 (1993-10-01), Herrmann et al.
patent: 5480109 (1996-01-01), Klein et al.
patent: 5735487 (1998-04-01), Abild et al.

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