NDLI: Cyclic hot firing results of tungsten-wire-reinforced, copper-lined thrust chambers

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Cyclic hot firing results of tungsten-wire-reinforced, copper-lined thrust chambers

Content Provider	NASA Technical Reports Server (NTRS)
Author	Kazaroff, John M. Jankovsky, Robert S.
Copyright Year	1990
Description	An advanced thrust liner material for potential long life reusable rocket engines is described. This liner material was produced with the intent of improving the reusable life of high pressure thrust chambers by strengthening the chamber in the hoop direction, thus avoiding the longitudinal cracking due to low cycle fatigue that is observed in conventional homogeneous copper chambers, but yet not reducing the high thermal conductivity that is essential when operating with high heat fluxes. The liner material produced was a tungsten wire reinforced copper composite. Incorporating this composite into two hydrogen-oxygen test rocket chambers was done so that its performance as a reusable liner material could be evaluated. Testing results showed that both chambers failed prematurely, but the crack sites were perpendicular to the normal direction of cracking indicating a degree of success in containing the tremendous thermal strain associated with high temperature rocket engines. The failures, in all cases, were associated with drilled instrumentation ports and no other damages or deformations were found elsewhere in the composite liners.
File Size	1894597
Page Count	18
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19920022005
Archival Resource Key	ark:/13960/t8rc1zg2t
Language	English
Publisher Date	1990-09-01
Access Restriction	Open
Subject Keyword	Spacecraft Propulsion And Power Metal Fatigue Fatigue Life Fracture Mechanics Rocket Linings Metal Fibers Fiber Composites Reusable Rocket Engines Thermal Cycling Tests Tungsten Thrust Chambers Metal Matrix Composites Cracking Fracturing Copper Test Firing Thermal Stresses Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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