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6CCVD Research

Fabrication of High Thermal Conductivity NARloy-Z-Diamond Composite Combustion Chamber Liner for Advanced Rocket Engines

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2016-01-01
Journal57th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
AuthorsBiliyar N. Bhat, Sandra E. Greene, Jogender Singh
InstitutionsMarshall Space Flight Center, Pennsylvania State University
Citations2

Abstract

Section titled ā€œAbstractā€

This paper describes the process development for fabricating a high thermal conductivity NARloy-Z-Diamond composite (NARloy-Z-D) combustion chamber liner for application in advanced rocket engines. The fabrication process is challenging and this paper presents some details of these challenges and approaches used to address them. Prior research conducted at NASA-MSFC and Penn State had shown that NARloy-Z-40%D composite material has significantly higher thermal conductivity than the state of the art NARloy-Z alloy. Furthermore, NARloy-Z-40 %D is much lighter than NARloy-Z. These attributes help to improve the performance of the advanced rocket engines. Increased thermal conductivity will directly translate into increased turbopump power, increased chamber pressure for improved thrust and specific impulse. Early work on NARloy-Z-D composites used the Field Assisted Sintering Technology (FAST, Ref. 1, 2) for fabricating discs. NARloy-Z-D composites containing 10, 20 and 40vol% of high thermal conductivity diamond powder were investigated. Thermal conductivity (TC) data. TC increased with increasing diamond content and showed 50% improvement over pure copper at 40vol% diamond. This composition was selected for fabricating the combustion chamber liner using the FAST technique.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
  1. 2013 - JANNAF Liquid Propulsion Meeting
  2. 2014 - NASA-MSFC, Materials and Processes Laboratory, Material Test Branch (EM10) Memorandum dated

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