Plasma Wind Tunnel Testing of Electron Transpiration Cooling Concept

Abstract

The first part of this project aimed at investigating the ETC process experimentally in the VKI Plasmatron facility on basic test materials such as graphite with a work function of approximately 4.5 eV. A provisional test design was used for testing in the Plasmatron facility and several interesting observations could be made during this first initial test campaign. The next steps towards an improved setup would be a better electrical insulation at higher temperatures (such as alumina, up to 1500 C)and a graphite collector to avoid pollution of the copper coil during each test run. Such a setup would require an electride material with lower work function instead of graphite as it is planned for future testing.

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Document Details

Document Type
Technical Report
Publication Date
Feb 28, 2017
Accession Number
AD1028658

Entities

People

  • Bernd Helber
  • Olivier Chazot

Tags

Communities of Interest

  • Air Platforms
  • Space

DTIC Thesaurus Topics

  • Air Force Research Laboratories
  • Boundary Layer
  • Carbon Carbon Composites
  • Composite Materials
  • Electrical Insulation
  • Electron Emission
  • Fluid Dynamics
  • Heat Transfer
  • Hypersonic Aircraft
  • Materials Science
  • Measurement
  • Stagnation Point
  • Static Pressure
  • Surface Temperature
  • Test Facilities
  • Thermionic Emission
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Electronics Engineering
  • Materials Science and Engineering.
  • Plasma Physics.

Technology Areas

  • Microelectronics