Airbus Operations Gmbh

Martin Griffith Rowlands

Nicholas Elliott

Matthew Gadd

Trevor Anthony Brighton

Christopher Perkins

Graham King

Maxwell William Jones

Mark Grufferty

An aircraft door controllerincluding a receiverconfigured to receive a commandto move an aircraft door between an open position and a closed position relative to a door frame. The aircraft door controlleris configured to not store the commandwhen power to move the aircraft door between the open position and the closed position relative to the door frame is unavailable.

Aircraft door control

A control system has first and second processing modules for controlling retraction and extension of an aircraft landing gear assembly. The processing modules operate independently providing redundancy. Each processing module is configured to perform a first sequence of steps for retracting the landing gear assembly and a second sequence of steps for extending the landing gear assembly. A step of switching control from one processing module to the other (e.g. an avionics side changeover step) is performed (a) as part of the first sequence of steps, but only after the landing gear assembly has been retracted, or (b) as part of the second sequence of steps. By ensuring that the step of switching control is performed at such times, and not for example between initiation of the first sequence of steps and the retraction of the landing gear assembly, the landing gear assembly may be retracted sooner after such initiation.

Control system and method for landing gear extension/retraction

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Bristol, United Kingdom

Martin Griffith Rowlands