Accession Number : ADD015896

Title :   Thrust Expansion Engine.

Descriptive Note : Patent, Filed 1 Jun 92, patented 16 Mar 93,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Zovko, Carl T

Report Date : 16 Mar 1993

Pagination or Media Count : 9

Abstract : Break-up activity of water by injection of hot propellant gas into channels of a thrust expansion engine is suppressed to prevent rapid cooling of the gas, utilizing one or more methods including injection of a secondary inflow of the propellant gas and/or the water under lower pressures into the channels, injection of a viscosity enhancer and/or surfactant into the inflow stream of the water and restricting outflow of the water from the channels by means of convergent nozzles.

Descriptors :   *ENGINES, *EXPANSION, *THRUST, *PATENTS, CHANNELS, COOLING, INJECTION, NOZZLES, PRESSURE, PROPELLANTS, SECONDARY, STREAMS, SURFACE ACTIVE SUBSTANCES, VISCOSITY, WATER, GASES, SUPPRESSION, CONVERGENT DIVERGENT NOZZLES, PROPULSION SYSTEMS, ROTORS, ROTATION, FLUIDS, ROCKET ENGINES

Subject Categories : Physical Chemistry
      Fluid Mechanics
      Rocket Engines
      Rocket Propellants

Distribution Statement : APPROVED FOR PUBLIC RELEASE