公开(公告)号：US20200055592A1

公开(公告)日：2020-02-20

申请号：US16556651

申请日：2019-08-30

Applicant: Airbus Operations Ltd.

Inventor： Martin Griffith ROWLANDS ,  Maxwell William JONES ,  Graham KING ,  Trevor Anthony BRIGHTON ,  Matthew GADD

IPC: B64C25/26 ,  B64C25/16

Abstract: 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changeover step) is performed (a) as part of the first sequence of steps, but only after the landing gear assembly has been retracted, or (b) as part of the second sequence of steps.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.