Accession Number : AD0817843

Title :   DEVELOPMENT OF ALUMINUM BOBBIN SEALS FOR SEPARABLE CONNECTORS FOR ROCKET FLUID SYSTEMS.

Descriptive Note : Technical documentary rept. for Jan 66-May 67 on Phase 1,

Corporate Author : BATTELLE MEMORIAL INST COLUMBUS OH COLUMBUS LABS

Personal Author(s) : Goobich, Bernard ; Thompson, John R. ; Trainer, Thomas M.

Report Date : JUL 1967

Pagination or Media Count : 55

Abstract : During earlier research, it was shown that damage to the flanges of the 6061-T6 aluminum AFRPL connector could be prevented if the seal material was softer than the flange material by 20 points Brinell. Under Phase I of follow-on research, five methods of accomplishing this were studied: (1) soft coatings, (2) skin annealing, (3) softer aluminum alloys, (4) anodizing the flange, and (5) special aging of 6061-T6. The overaged 6061 aluminum for the seal was selected because of economic and technical reasons. Repeated-assembly, thermal-gradient, and stress-reversal-bending tests were conducted with helium-leakage rates below the limit of 7 x 10 to the minus 7th power atm cc/sec. Tentative specifications and standards were revised.

Descriptors :   *METAL SEALS), (*PIPE FITTINGS, LIQUID PROPELLANT ROCKET ENGINES), (*ALUMINUM ALLOYS, FUEL SYSTEMS, COATINGS, AGING(MATERIALS), STRESSES, THERMAL PROPERTIES, MICROSTRUCTURE, HEAT TREATMENT.

Subject Categories : Properties of Metals and Alloys
      Pumps, Filters, Pipes, Tubing, Fittings & Vlvs

Distribution Statement : APPROVED FOR PUBLIC RELEASE