Accession Number : AD0806939

Title :   INFLUENCE OF BOOST GLIDE RE-ENTRY VEHICLE ENVIRONMENT ON COATED AND BARE REFRACTORY METALS.

Descriptive Note : Technical rept. May 65-Feb 66,

Corporate Author : MCDONNELL AIRCRAFT CORP ST LOUIS MO

Personal Author(s) : Fitzpatrick, T. H.

Report Date : AUG 1966

Pagination or Media Count : 66

Abstract : Uncoated and defect-containing coated refractory metal specimens were subjected to laboratory simulations of a boost glide re-entry vehicle flight environment. Measurements and visual examination determined the effects of the re-entry flight environment. Weight change, dimensional change, and extent of substrate contamination were measured for each specimen. An x-ray diffraction analysis was performed on the surface of representative specimens. Knoop hardness traverses were made through a section of the tested specimens. Each surface was photographed and typical areas and defects were microphotographed for evaluation. (Author)

Descriptors :   (*REFRACTORY METALS, ENVIRONMENTAL TESTS), (*LIFTING REENTRY VEHICLES, MATERIALS), (*METAL COATINGS, REFRACTORY METALS), AERODYNAMIC HEATING, NIOBIUM ALLOYS, TANTALUM ALLOYS, TUNGSTEN ALLOYS, BOOST GLIDE VEHICLES, CRACKS, OXIDES, FILMS, SUBSTRATES, CONTAMINATION, CHROMIUM, SILICON, ATMOSPHERE ENTRY, TITANIUM.

Subject Categories : Metallurgy and Metallography
      Unmanned Spacecraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE