Accession Number : AD0478188


Title :   COMPLETION OF FABRICATION AND ASSEMBLY OF THERMAL MANAGEMENT SYSTEM FOR DYNA-SOAR (X-20)


Descriptive Note : Final rept. Aug 1964-Apr 1965


Corporate Author : GARRETT CORP LOS ANGELES CA AIRESEARCHMFG DIV


Personal Author(s) : Chase, A B


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/478188.pdf


Report Date : Dec 1965


Pagination or Media Count : 185


Abstract : Several components for the X-20 (Dyna-Soar) thermal management system were in final fabrication when the original Dyna-Soar contract was cancelled. The components for three systems were refurbished and, where necessary, remanufactured and then assembled, and acceptance tested. The thermal management system is designed to remove heat from several heat-generating sources on the X-20 space Vehicle, and to return a portion of the heat to the hydrogen storage tank to maintain tank pressure. The system employs an aqueous ethylene glycol heat-transport fluid to connect the various heat sources to the heat sink. The heat sink is cryogenic hydrogen, which is stored in the supercritical state as fuel for the auxiliary power unit (APU). The distinguishing feature of this system is its ability to proportion, as required, the total hydrogen flow to the APU and the cooling load, while maintaining system stability and logic over tank pressurization, heat rejection, and APU fuel demand.


Descriptors :   *HEAT EXCHANGERS , *AIR CONDITIONING EQUIPMENT , *BOOST GLIDE VEHICLES , HEAT TRANSFER , SYSTEMS ENGINEERING , PERFORMANCE(ENGINEERING) , COOLING , HYDROGEN , PRESSURE , OPERATION , FANS , TEMPERATURE CONTROL , VALVES , PRESSURIZATION , ASSEMBLY , COMPRESSORS , HEAT SINKS , HYDRAULIC PRESSURE PUMPS , AUXILIARY POWER PLANTS , HYDRAULIC FLUIDS , CHECK VALVES , ALKENES , GLYCOLS , PRESSURE REGULATORS , LIQUEFIED GASES


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


Distribution Statement : APPROVED FOR PUBLIC RELEASE