Accession Number : AD0164342

Title :   Natural Circulation Liquid Pumping System in Plume Pumping System for Test Engines.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Triplett,Milton J.

Report Date : 26 SEP 1972

Pagination or Media Count : 5

Abstract : The patent describes a natural circulation pumping system, used in a plume pumping system for a test engine; a liquid coolant in a reservoir-separator which supplies the liquid to a plurality of insulated downcomer tubes. The downcomer tubes are connected at their lower ends to an annular manifold. The liquid is returned to the reservoir-separator through a plurality of riser tubes wherein the vaporizing of the liquid, by the heat added, causes the liquid to circulate, since the liquid-vapor mixture in the riser tubes has less weight than the liquid in the downcomer tubes. Natural separation takes place in the reservoir-separator as the heavier liquid falls into the liquid pool and the light gas rises to be vented.

Descriptors :   *Cryopumping, *Patents, Rocket engines, Rocket exhaust, Coolants, Liquid hydrogen

Subject Categories : Pumps, Filters, Pipes, Tubing, Fittings & Vlvs
      Rocket Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE