Patent ID: 8485471
Filing Date: 2013-07-16
Classification: B64D

Abstract:
1. A method of preventing arm flail injuries to an ejection seat occupant subjected to a windblast comprising: providing an ejection seat mounted to an aircraft, the ejection seat comprising a seat frame and a propulsion system; initiating the propulsion system to propel the ejection seat out of the aircraft; in response to the ejection seat being propelled out of the aircraft, deploying a backstop attached to the seat frame to a deployed position to form a forward-facing surface extending laterally outward from the seat frame substantially rearward of the occupant's arms; allowing the occupant's arms to flail in a rearward direction in the windblast until the occupant's arms impact the forward-facing surface of the backstop, whereby rearward motion of the occupant's arms relative to the seat frame is arrested.