Accession Number:

AD0276529

Title:

EVALUATION OF HIGH-STRENGTH LIGHTWEIGHT LAMINATED PRESSURE VESSELS OF LAP-JOINT CONSTRUCTION

Descriptive Note:

Corporate Author:

REPUBLIC AVIATION CORP MINEOLA N Y

Personal Author(s):

Report Date:

1962-05-01

Pagination or Media Count:

1.0

Abstract:

Studies were initiated to demonstrate the high performance capabilities of an overlapping cylinder design and manufacturing techniques for application to solid propellant rocket motor cases utilizing structural adhesive bonding phase I and alternately brazing or ceramic bonding phase II to effect the assembly. A further aim is to evaluate the use of cylinders produced by welding sheet material both in the interest of production economy and of potential application to very large sizes. For this latter purpose, the high nickel mar-aging steels are being surveyed as the preferred material. The effort on a materials survey resulted in a tentative selection of the 18 Ni alloys as offering the greatest potential. Small quantities of sample materials were partially evaluated and produced results sufficiently encouraging to warrant ordering test quantities of both the 18-7-5 and 18-9-5 NiCoMo mar-aging steel alloys. Basic weldability characteristics were excellent, although optimum processing techniques have yet to be determined. The potential of these alloys at 300,000-psi yield parent-metal strength levels was confirmed, and preliminary tests indicate satisfactory adhesive bonding characteristics. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE