US 12,404,011 B2
Aircraft system
Alessandro Albarello, Bristol (GB); David Paviour, Bristol (GB); and Daren Payne, Bristol (GB)
Assigned to AIRBUS OPERATIONS LIMITED, Bristol (GB)
Filed by AIRBUS OPERATIONS LIMITED, Bristol (GB)
Filed on Feb. 25, 2022, as Appl. No. 17/681,129.
Claims priority of application No. 2102829 (GB), filed on Feb. 26, 2021.
Prior Publication US 2022/0324556 A1, Oct. 13, 2022
Int. Cl. B64C 25/16 (2006.01)
CPC B64C 25/16 (2013.01) 19 Claims
OG exemplary drawing
 
1. An aircraft system for an aircraft, the aircraft system comprising a controller that is configured, during a take-off procedure, to:
initiate automatic closing of a landing gear bay door of the aircraft from an open position towards a closed position, on the basis of a determination that a predetermined door-closing criterion has been met and a command to retract a landing gear has not been received, the landing gear being arranged to retract into a landing gear bay to be at least partially covered by the landing gear bay door when the landing gear bay door is in the closed position,
wherein the controller is configured to initiate the automatic closing of the landing gear bay door in the event that the controller determines that the door-closing criterion is met and a one engine inoperative (OEI) situation has occurred,
wherein a drag effect of the landing gear bay door being open for longer than the predetermined door-open period may reduce an aircraft climb rate, and
wherein the controller is configured to maintain the landing gear in an extended position during the automatic closing of the landing gear bay door and de-pressurize a landing gear extension and retraction system when the landing gear bay door is locked in the closed position.