公开(公告)号：US20160129996A1

公开(公告)日：2016-05-12

申请号：US14897101

申请日：2014-06-12

Applicant: BOMBARDIER INC. ,  LEARJET INC.

Inventor： Frederic BOUCHER ,  Clovis S. RIBAS

IPC: B64C25/22 ,  B64C25/26

CPC classification number: B64C25/22 ,  B64C25/26

Abstract: A landing gear system includes landing gear, an uplock that is releasably engageable with the landing gear, an uplock hydraulic actuator operably connected to the uplock, a landing gear hydraulic actuator operatively connected to the landing gear, and a controller operatively connected to the uplock hydraulic actuator and the landing gear hydraulic actuator. In response to receipt of a command to deploy the landing gear, the controller actuates the uplock hydraulic actuator and the landing gear hydraulic actuator to the UP condition and then actuates the uplock hydraulic actuator and the landing gear actuator to the DOWN condition. An alternative embodiment incorporates a piloted check valve upstream of the landing gear hydraulic actuator. The piloted check valve delays operation of the landing gear hydraulic actuator until release of the landing gear by the uplock.

Abstract translation: 起落架系统包括起落架，可拆卸地与起落架接合的上锁，可操作地连接到起重装置的上锁液压致动器，可操作地连接到起落架的起落架液压致动器，以及可操作地连接到起重机液压的控制器 执行器和起落架液压执行器。 响应于接收到部署起落架的命令，控制器将升压液压致动器和起落架液压致动器致动到UP状态，然后将升压液压致动器和起落架致动器致动到DOWN状态。 替代实施例包括起落架液压致动器上游的先导止回阀。 引导式止回阀延长起落架液压执行机构的操作，直到起落架松开。