STUDY AND DESIGN OF ARMORED AIRCREW CRASH SURVIVAL SEAT
Abstract
The primary objective of this program was to develop the design of an improved aircrew armored crash survival seat. The U. S. Army, through previous contractual efforts, designed and developed four armored aircrew seats having crash load attenuation features. Each design was unique in concept, geometry, material, energy absorption and other factors. A comprehensive analysis and evaluation was made of these designs as a basis for developing an improved design. A seat design was developed that will meet or exceed the specified requirements. It is forward facing and designed for installation in the UH-1B aircraft. It consists of a seat bucket, fabricated of aluminum alloy sheet, supported by a tubular steel framework from floor tracks. Load attenuation is accomplished by a Hayes-developed energy absorbing device utilizing controlled bending of steel rods. The seat bucket is allowed to move relative to the support for energy absorbing stroke in the vertical and lateral directions. The complete seat moves relative to the floor for the stroke in the longitudinal direction. The load attenuation devices can be adjusted or easily replaced for various occupant-armor weight configurations. Vertical adjustment is accomplished with an electric actuator. Ballistic protection is provided by a shell of ceramic-fiber glass composite armor attached to the seat bucket. The armor was developed by CTL and is somewhat lighter in weight than present armor. Protection is provided against 7.62 mm APM-61 ammunition fired at 100 yards range at 15 degrees obliquity.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1967
- Accession Number
- AD0812994
Entities
People
- Glenn R. Grimes
- Leon R. Anderson
- Olan A. Rogers