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
Distribution Statement : APPROVED FOR PUBLIC RELEASE