Accession Number : AD0869223

Title :   Tantalum System Evaluation.

Descriptive Note : Final technical rept. 9 May 66-1 Apr 70,

Corporate Author : MCDONNELL DOUGLAS ASTRONAUTICS CO ST LOUIS MO

Personal Author(s) : Jackson, Robert E. ; Lopatin, Albert

Report Date : APR 1970

Pagination or Media Count : 373

Abstract : The basic objective was to extend the temperature limit of coated refractory metal structures to 3500F by designing, developing, and evaluating self-sustaining, radiating structures fabricated from one or more tantalum alloys. In an effort to accomplish the objectives, the program was divided into the following phases to ensure an orderly, productive development. Phase I - Conduct surveys on tantalum alloys, coatings, and insulation materials; Phase II - Assess the formability, fabricability, coatability, and develop assembly techniques for the alloys associated with the four best 'material systems' of Phase I; and in Phase III - Design, analyze, fabricate, and test leading edge and flat panel full-scale components; conduct a final evaluation and comparison study of the 'material systems' and structural concepts used in this program. (Author)

Descriptors :   (*REENTRY VEHICLES, HEAT SHIELDS), (*METAL COATINGS, TANTALUM ALLOYS), CORROSION INHIBITION, THERMAL INSULATION, STRUCTURAL PROPERTIES, MANUFACTURING, AEROSPACE CRAFT.

Subject Categories : Research and Experimental Aircraft
      Coatings, Colorants and Finishes
      Properties of Metals and Alloys
      Unmanned Spacecraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE