Autofeather state machine

Details Autofeather state machine Autofeather state machine

B - Operations, Transporting

64

D

341/109, 354/18

B64D 31/10 (2006.01) G05D 1/00 (2006.01) G06F 17/40 (2006.01)

Patent

CA 1290058

Abstract Autofeather State Maintenance Each engine of a multi-engine aircraft is monitored to determine if it has become inoperative during a critical flight mode such as takeoff or landing. If so, the propeller of the inoperative engine is feathered and the remaining engine or engines is uptrimmed. A "state machine" indicative of the various states of the aircraft is established and the present state of the aircraft is stored in a non-volatile memory, if an electrical power interruption occurs during a critical flight mode the identity of the present operating state may be quickly recalled for immediate refeathering of an inoperative engine and reuptrimming of the remaining engine or engines.

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