Apparatus and method for controlling landing gear
US10106248B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 12, 2014 |
| Grant date | Oct 23, 2018 |
| Priority date | — |
| Expiry date | Jan 24, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C25/26
- WIPO fieldTransport
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.