Exploratory Development of Partial Pressure Helmet and Mobility Joints for Emergency Pressure Suit Outfits.
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1971
- Accession Number
- AD0720275
Entities
People
- Alfred Marcum
- Jozef Slowik
- Marvin Burns
Organizations
- IIT Research Institute