Accession Number : AD0720275

Title :   Exploratory Development of Partial Pressure Helmet and Mobility Joints for Emergency Pressure Suit Outfits.

Descriptive Note : Final rept. 1 Jun 69-31 Aug 70,

Corporate Author : IIT RESEARCH INST CHICAGO ILL

Personal Author(s) : Slowik,Jozef ; Marcum,Alfred ; Burns,Marvin

Report Date : JAN 1971

Pagination or Media Count : 43

Abstract : Anistropic Dacron net prepared by distortion on the bias and locking with a polyurethane solution was used for expandable panels along with non-expandable fabrics and volume transfer bands to form several experimental joints. Combinations showing proper function in a single plane were not fully adaptable to multiple plane joints without resorting to bulky, rigid parts. The helmet incorporated a manually operated pressure visor, face-ear seals, and a multi-compartmented bladder system which does not cover the crown of the head thus cancelling helmet lifting forces. The helmet is functional and has been worn at 175 mm Hg pressure without undue discomfort. Total weight and bulk are low for a pressure helmet and high altitude trials have been successful. Head mobility (limited by omission of a rotary bearing and suit-bib overlap), better face-ear seals, and automatic visor closing would be attainable in a coordinated helmet/suit system development. (Author)

Descriptors :   (*PRESSURE SUITS, *JOINTS), (*HELMETS, JOINTS), MOBILITY, DACRON, DISTORTION, NETS, HIGH ALTITUDE

Subject Categories : Protective Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE