Streamline afterbody for an ejection seat

• US 4,261,535 A
• Filed: 10/05/1979
• Issued: 04/14/1981
• Est. Priority Date: 10/05/1979
• Status: Expired due to Term

• Current Assignee: United States Of America As Represented By The Secretary Of The Air Force
• Original Assignee: United States Of America As Represented By The Secretary Of The Air Force
• Inventors: Swanson, Douglas E.
• Primary Examiner(s): Barefoot, Galen L.
• Application Number:
  US06/082,353
• Time in Patent Office: 557 Days
• Field of Search: 244/130, 244/122 A, 244/122 AE, 244/141, 244/140, 244/2, 244/5, 244/49, 244/87, 244/3.27, 102/4, 102/34.1, 296/1 S
• US Class Current: 244/130
• CPC Class Codes: B64D 25/10 Ejector seats

Abstract

The ejection seat on a high performance aircraft is provided with a plurality of inflatable air bags on the back of the seat. The air bags are generally elliptical in cross-section and arranged one above the other in two parallel vertical rows on a supporting pallet attached to the seat back. Suitable gas generators cause the air bags to inflate in sequence top-to-bottom as the seat ejects from the aircraft to produce a rearwardly extending generally streamline afterbody thereby reducing aerodynamic drag and stabilizing the seat with its occupant after emergency ejection.

Claims

1. A streamline afterbody for attachment to the ejection seat of a high performance aircraft, comprising a support pallet fixedly attached to the back of the ejection seat, a rigid skin cover over said pallet, a plurality of inflatable air bags attached to said skin cover, said air bags being fully deflated when the ejection seat is in position in the cockpit of the aircraft, said inflatable air bags being arranged in two vertical parallel rows for rearward extension from the back of the ejection seat, and means for inflating said air bags during ejection of the seat from the aircraft to produce a rearwardly extending steamline afterbody for stabilizing the seat and reducing aerodynamic drag after ejection from the aircraft.

2. The streamline afterbody for attachment to the ejection seat of a high performance aircraft as defined in claim 1 wherein said inflatable air bags are positioned in two vertical rows of five each and inflate sequentially from top to bottom as the seat is ejected from the cockpit with the upper bags inflating first and the lower bags fully inflating after the seat leaves the cockpit.

3. The streamline afterbody for attachment to the ejection seat of a high performance aircraft as defined in claim 2 wherein said inflatable air bags are elliptical in cross section and fabricated of a flexible airtight fabric.