Accession Number : ADA307683

Title :   Experimental Study Under Ground-Hold Conditions of Several Insulation Systems for Liquid-Hydrogen Fuel Tanks of Launch Vehicles.

Descriptive Note : Technical note,

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION HAMPTON VA LANGLEY RESEARCH CEN TER

Personal Author(s) : Perkins, Porter J., Jr

PDF Url : ADA307683

Report Date : MAR 1965

Pagination or Media Count : 28

Abstract : Three proposed insulation systems that may be applied externally to the liquid-hydrogen fuel tank of launch vehicles were investigated under ground-hold conditions to determine the application feasibility to flight-weight tanks. Experimental data were obtained on the thermal performance of an uninsulated tank and of tanks with three different insulation systems. These were (1) sealed corkboard bonded to the tank, (2) sealed and evacuated polyurethane foam held in place on the tank with a constrictive wrap of prestressed nylon strands, and (3) sealed and evacuated polyurethane foam with a film of liquid nitrogen sprayed on the external surface.

Descriptors :   *INSULATION, *FUEL TANKS, *LAUNCH VEHICLES, THERMAL PROPERTIES, PERFORMANCE(ENGINEERING), NYLON, FILMS, SURFACES, FEASIBILITY STUDIES, BONDED JOINTS, EXTERNAL, LIQUID HYDROGEN, LIQUID NITROGEN, POLYURETHANE RESINS, STRANDS, FOAM, PRESTRESSING, EXPANDED PLASTICS.

Subject Categories : Adhesives, Seals and Binders
      Fuels
      Astronautics

Distribution Statement : APPROVED FOR PUBLIC RELEASE