Accession Number : AD0505451

Title :   Development and Demonstration of Passively Cooled Thrust Chamber Assemblies for Fluorinated Propellants.

Descriptive Note : Interim rept. 15 Feb 68-Jun 69 on Phase 1,

Corporate Author : AEROJET-GENERAL CORP SACRAMENTO CALIF LIQUID ROCKET DIV

Personal Author(s) : Dickson,James C. ; Schindler,Robert C.

Report Date : OCT 1969

Pagination or Media Count : 91

Abstract : This report is a two-phase development program to evaluate 300-lb thrust passively cooled thrust chambers at chamber pressures of 300 and 500 psi in a long-duration fluorinated oxidizer propellant environment. Phase I was a 17-month effort consisting of the design, fabrication, test and analysis of two thermally instrumented thrust chambers tested at 300-psi chamber pressure for over a 400-sec duty cycle that included multiple hot and cold restarts and long-duration tests with two types of propellants: CTF/MMH and CTF/BA-1014. Both thrust chambers used fibrous graphite (AGCarb-101) in the throat region and graphite phenolic ablative material in the upstream portion of the chamber. The first chamber design used a fibrous graphite throat insert which was mechanically restrained and insulated by a structural overwrap capable of withstanding high temperatures. The second chamber was identical in internal geometry to the first but but used the AGCarb-101 fibrous graphite material as a thin-wall self-supporting radiation member externally insulated by a nonload-carrying ablative shield. Post firing analysis indicated that AFRPL's like doublet multielement injector and both Phase I thrust chambers were capable of additional long-duration testing.

Descriptors :   (*COMBUSTION CHAMBERS, COOLING), (*LIQUID ROCKET PROPELLANTS, FLUORINATION), LIQUID PROPELLANT ROCKET ENGINES, PASSIVE SYSTEMS, SPECIFIC IMPULSE, ABLATION, HEAT SHIELDS, LIQUID ROCKET OXIDIZERS, NOZZLE INSERTS, COMBUSTION CHAMBER LINERS, DEPOSITION, COMPOSITE MATERIALS, REINFORCING MATERIALS (U) GRAPHITE, CHLORINE COMPOUNDS, FLUORIDES, METHYL HYDRAZINES, NOZZLE THROATS, PHENOLIC PLASTICS, FUEL INJECTORS, CARBON, MACHINING

Subject Categories : Liquid Propellant Rocket Engines
      Liquid Rocket Propellants

Distribution Statement : APPROVED FOR PUBLIC RELEASE