High-Speed Cinematic Studies of Water Vaporization Phenomena in Electrothermal Hydrazine Thruster Simulations.

Abstract

Tests of prototype electrothermal hydrazine thrusters (EHTs), intended for satellite attitude and orbit control, revealed anomalies in performance, attributed to problems in vaporization. The process of vaporization was studied by high-speed cinematography, with water substituted for hydrazine in models of the EHT. THe results of the flow visualization research are described, and it is concluded that Leidenfrost film-boiling effects inhibited vaporization and affected the performance of the thrusters. (Author)

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1980
Accession Number
ADA098689

Entities

People

  • W. G. Grenham

Organizations

  • Royal Aircraft Establishment

Tags

Communities of Interest

  • Air Platforms
  • Biomedical
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Boiling Point
  • Boundaries
  • Decomposition
  • Energy
  • Film Boiling
  • Flow Rate
  • Flow Visualization
  • Heat Energy
  • Heat Transfer
  • Hypervelocity Flow
  • Latent Heat
  • Mass Flow
  • Nucleate Boiling
  • Physical Properties
  • Specific Heat
  • Steady State
  • Transitions

Readers

  • Aerospace Propulsion Engineering.
  • Combustion and Flow Dynamics.
  • Marine Hydrodynamics

Technology Areas

  • Space
  • Space - Hall-Effect Thruster