CRYOGENIC STRETCH-FORMING OF SOLID-PROPELLANT ROCKET CASES
Abstract
Five vessel configurations (total of ten vessels) were cryogenically stretched prior to the occurrence of a breakdown in the strength facility. Two of the configurations incorporated dog-bone components and were stretched as part of the program to develop the elliptical head. A simple vessel incorporating a thrust skirt, and two configurations for producing high-strength domes, were also stretched. Testing was interrupted due to a gross failure of the cryogenic pump of the stretch facility. The computer program, for analytically determining the final shape to be achieved by cryogenically stretching a given pre form vessel, was checked against actual data from a stretched vessel. The results indicate that the plasticity equations and the computer program are capable of predicting the stretched shape with a high degree of accuracy. The first simple, full-size vessel was assembled during this report period and rejected for bad welds. The problem proved to be one of dimensional tolerance on the head diameter.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 31, 1963
- Accession Number
- AD0403459
Entities
People
- George Claffy