Accession Number : ADD014102

Title :   Expandable Pulse Power Spacecraft Radiator.

Descriptive Note : Patent, Filed 21 Oct 87, patented 21 Mar 89,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Mahefkey, Edward T

Report Date : 21 Mar 1989

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. Patents. (MJM)

Descriptors :   *HEAT TRANSFER, *PATENTS, *SPACECRAFT, *THERMAL RADIATION, CONDENSATION, EVAPORATION, EXCHANGE, EXTERNAL, FLEXIBLE STRUCTURES, FLOW, FLUIDS, HEAT, INTERNAL, LIQUID PHASES, RADIATION, SOURCES, SURFACES, THIN WALLS

Subject Categories : Thermodynamics
      Unmanned Spacecraft
      Manned Spacecraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE