THE USE OF LINES OF NONEXTENSION TO IMPROVE MOBILITY IN FULL-PRESSURE SUITS
Abstract
An important objective in the development of a fullpressure suit for a human being is to permit the wearer full mobility without interfering with physical capability. Although the human skin is stretched during body motion, there is virtually no stretch along certain lines, here called 'lines of nonextension'. The investigation was un dertaken to determine the efficacy of utilizing lines of nonextension to provide natural mobility and minimal ballooning in full-pressure suits. The program of investigation pursued was: (1) to map out these lines of nonextension, (2) to test whether string elements of high elastic modulus, a connected network, could be laid along these lines of nonestension without providing any constraint to mobility, (3) to obtain a highly mobile pressure-retaining layer to be constrained by the net, and (4) to construct and demonstrate an entire pressure-retaining garment system that makes use of all necessary layers and string elements in a completely connected, netted covering for the body, with minimal constraint to mobility up to 5 psi. A mobile, pressure-retaining garment was developed by building each structural, functional layer into the composite garment in accordance with the basic design theory.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1964
- Accession Number
- AD0610519
Entities
People
- Arthur S. Iberall