Lightweight stow abort mechanism
US8651815B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 21, 2010 |
| Grant date | Feb 18, 2014 |
| Priority date | — |
| Expiry date | Jul 12, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/20207
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A ram air turbine (RAT) includes a movable turbine support structure that is prevented from moving to a stowed position by a stow abort mechanism when turbine blades are not locked in a desired position. The stow abort mechanism includes a pawl that is driven by a cam on a release lever. The release lever is movable in response to a position of a release pin that prevents rotation of a turbine drive shaft from a desired orientation that locks the turbine blades in a desired position required for stowage. Disengagement of the release pin causes the stow abort mechanism to maintain a position where the pawl blocks movement to the deployed position. Engagement of the release pin to prevent rotation results in movement of the pawl to a position that provides for movement to the stowed position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.