NASA Technical Reports Server (NTRS) : On pdf

NASA Technical Reports Server (NTRS) : On

More Book Details

Description of the Book:

The work to correct several design deficiencies present in the bearings used in the orbital extravehicular spacesuit is reported. These deficiencies included: difficult stitch-on interface between fabric and outer race; a tendency for the clamping threads to seize; and, most importantly, the failure of the sealing surfaces (Teflon seat, Delrin seal) to maintain integrity with cycling. The first problem was corrected by raising the stitch-on holes so as to be more accessible. The seizing was eliminated by changing to a coarser thread, from 32/inch to 24/inch. The solution to the sealing problem required a materials evaluation, candidate material selection, and adhesive evaluation (for bonding the seat material to the outer race) and bench-cycling of candidate seal/seat combinations. The final configuration, successfully bench-cycled and delivered to NASA, is shown

• Creator/s: NASA Technical Reports Server (NTRS
• Date: 1/1/1975
• Year: 1975
• Book Topics/Themes: NASA Technical Reports Server (NTRS), EXTRAVEHICULAR ACTIVITY, SPACE SUITS, ADHESIVE BONDING, CYCLES, PERFORMANCE TESTS, SEALERS, Rayfield, J

An excerpt captured from the PDF book