Columbium Chamber Fabrication Study

Abstract

In order to achieve high performance in a compact envelope, some Advanced Pump-Fed engines must operate at high chamber pressure while maintaining high component efficiencies. The most significant technology advancement required to bring this engine concept to reality is cooling of the combustion chamber under these conditions. The leading candidate chamber cooling system makes use of a chamber regeneratively cooled with N204 oxidizer. Columbium (Niobium) is one of the candidate materials being considered for the chamber. It has the physical and thermal properties required for cooling and structural integrity, and is compatible with the corrosive N204 in the normal engine operating environment. The chamber design approach employs a machined columbium alloy liner with rectangular slots milled onto its exterior. After filling the slots with a removable filler material, they are 'closed out' with pure columbium using the Chemical Vapor Deposition (CVD) process to enclose and form the coolant passages.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1984
Accession Number
ADA145230

Entities

People

  • V. Frick

Organizations

  • Aerojet Rocketdyne Holdings

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Alloys
  • Aluminum Oxides
  • Chemical Reactions
  • Chemical Vapor Deposition
  • Chemistry
  • Combustion Chambers
  • Crystal Structure
  • Elements
  • Energy
  • Heat Energy
  • Hydrogen
  • Materials
  • Mixtures
  • Solid Solutions
  • Surface Reactions
  • Thermal Properties

Readers

  • Combustion and Flow Dynamics.
  • Powder metallurgy of Titanium alloys.
  • Rocket Propulsion.