Passive ejection seat arm flail restraint apparatus and method
US8485471B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2010 |
| Grant date | Jul 16, 2013 |
| Priority date | — |
| Expiry date | Oct 11, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64D25/02
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An ejection seat arm flail injury prevention apparatus comprises a pair of rigid support arms on each side of the ejection seat that deploy outwardly to support a semi-rigid backstop substantially behind the ejection seat occupant. When the ejection seat is propelled out of the aircraft and is subjected to the windblast, the occupant's arms are allowed to flail in a rearward direction in the windblast until the occupant's arms impact the semi-rigid backstop. The backstop is semi-rigid in that it deforms sufficiently to enable the rearward motion of the occupant's arms to be arrested without impact injury, yet is sufficiently rigid to prevent the occupant's arms from rebounding off the backstop or striking the rigid support arms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.