Accession Number : ADD013775

Title :   Expandable Pulse Power Spacecraft Radiator.

Descriptive Note : Patent, Filed 18 Jun 86, patented 1 Mar 88,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Mahefkey, Edward T

Report Date : 01 Mar 1988

Pagination or Media Count : 7

Abstract : An expandable heat rejection system for radiating heat generated by a source of heat on a spacecraft or like vehicle is described and comprises a fluid heat exchange medium in operative heat exchange contact with the source for absorbing heat by evaporation of the liquid phase of the medium, a thin flexible wall structure having an inlet and an outlet and defining a volume expandable and collapsible between preselected limits and defining an inner condensation surface and an outer heat radiating surface, a multiplicity of capillary grooves on the condensation surface for promoting condensation of vaporous medium and for facilitating flow of condensate along the condensation surface toward the outlet, and a pump for circulating the medium through the system.

Descriptors :   *PATENTS, *SPACECRAFT COMPONENTS, *RADIATORS(HEATING AND COOLING), *HEAT EXCHANGERS, CONDENSATION, EXPENDABLE, EXTERNAL, FLEXIBLE STRUCTURES, FLOW, FLUIDS, HEAT, HEAT TRANSFER, INTERNAL, LIQUID PHASES, RADIATION, REJECTION, SOURCES, SPACECRAFT, SURFACES, THERMAL RADIATION, THIN WALLS, COOLANT PUMPS, CONDENSER TUBES, INFLATABLE STRUCTURES, CAPILLARY TUBES, EVAPORATION, COILS

Subject Categories : Air Condition, Heating, Lighting & Ventilating
      Unmanned Spacecraft
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE