Dispersion-Strengthened Metal Structural Development. Part II.
Abstract
A research program was conducted to investigate structural utilization of oxidation resistant dispersion-strengthened metals (DSM) is described. The program was initiated to assess their use in structures that will experience repeated service at elevated temperatures in the range of 1400 F to 2400 F. The entire effort is divided into six phases to provide an orderly investigation in the areas of (1) structural design requirements, (2) material survey and evaluation, (3) structural design allowables, (4) structural test assembly design, (5) structural assembly evaluation through tests, and (6) evaluation of material changes caused by the cyclic tests. Results of Phases IV and V are described. The selection, design, fabrication, and testing of a representative DSM structural assembly are described. The vertical fin of a hypersonic high lift-to-drag reentry vehicle was chosen for demonstration of the structural application of DSM. Ni-20Cr-2ThO2 was previously selected in earlier program phases as the most suitable DSM for structural use; this material was employed in a majority of components in the fin test assembly. The completed fin structure had a projected area of 15.7 square feet, and its weight, with test fittings included, was 139 pounds. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1973
- Accession Number
- AD0910317
Entities
People
- D. H. Killpatrick
- Read Johnson Jr.