Design drawings were completed for the 20 in. diameter test chamber in the development of a solid rocket motor case. Two alloys, Ti-13V11Cr-3Al alloy and 20 nickel steel having 1.7 Ti and 0.5 Al, were selected as the fabricating materials. Manufacturing of the cases was begun. Welding tests were continued.
Quarterly engineering progress rept. no. 18, 1 Oct-31 Dec 1961