The Boeing Company

Mark Aaron Ulrich

Michael Jay Burghdoff

John W Alaimo, Jr

Theresa J Hirsch

Erich C Vaughan

Geun I Kim

An aircraft includes engines, electronic engine controllers (EECs) associated with the engines, and a flight management computer (FMC). The FMC includes a non-volatile memory and processor(s) configured to perform one or more error check operations based on engine data from a non-volatile memory of the FMC to determine whether to select an engine thrust rating for a thrust model of the aircraft based, in part, on an engine rating identifier associated with the engine data. The processor(s) may also, or alternatively, be configured to select, based on the plurality of local thrust rating model (TRM) identifiers, intermix thrust model data for use by the FMC during a flight of the aircraft, where the intermix thrust model data is associated with a thrust model identifier that is common to two or more engines of the aircraft.

Systems and methods for aircraft thrust rating model processing

A hydraulic lock for a hydraulic system includes a flow control valve and a second check valve. The flow control valve having a first inlet, a first outlet, a first check valve and a flow restrictor, each of the first check valve and the flow restrictor being communicably coupled to the first inlet and the first outlet and being arranged in parallel between the first inlet and the first outlet. The second check valve having a second inlet and a second outlet, the second inlet being communicably coupled to the first outlet, the second check valve further having a ball seating surface having an aperture there through, a ball, and a resilient member biasing the ball towards the ball seating surface to seal the aperture, the aperture being communicably coupled to the second inlet and the second outlet.

Growing community of inventors

Everett, WA, United States of America

Mark Aaron Ulrich