Accession Number : AD0696444

Title :   AN ANALYTICAL AND EXPERIMENTAL STUDY OF A CRYOGENIC EVAPORATOR FOR SPACE APPLICATION.

Descriptive Note : Technical rept.,

Corporate Author : CINCINNATI UNIV OHIO DEPT OF AEROSPACE ENGINEERING

Personal Author(s) : Earley,R. ; Tabakoff,W.

Report Date : AUG 1969

Pagination or Media Count : 87

Abstract : The report is concerned with an analytical and experimental study of a heat exchanger which is to be used as a component part of a low thrust, space vehicle, propulsion unit. The necessary heat to operate the exchanger is taken from internal space-craft surroundings (i.e. reactor, electric motor, electric generator, etc.). Conduction is assumed to be the primary mode of heat transfer into the exchanger. The primary purpose of the heat exchanger is to change the cryogenic liquid propellant into a gas. The propellant gas from this evaporator is accelerated through a nozzle to produce small thrusts. The theoretical analysis considers only steady state temperature characteristics of the evaporator. These characteristics are compared with experimented observations. From these comparisons conclusions are drawn concerning the feasibility of using the analytically developed equations to construct an evaporator for practical use. (Author

Descriptors :   (*SPACE PROPULSION, CRYOGENIC PROPELLANTS), (*CRYOGENIC PROPELLANTS, *EVAPORATORS), (*HEAT EXCHANGERS, SPACE PROPULSION), LIQUEFIED GASES, HEAT TRANSFER, CRYOGENICS, BOILING, VAPORIZATION, AMMONIA, PARTIAL DIFFERENTIAL EQUATIONS, NUMERICAL ANALYSIS

Subject Categories : Air Condition, Heating, Lighting & Ventilating
      Liquid Propellant Rocket Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE