Effect of Pressure on Ignition of Hypergolic Liquid Propellants

Abstract

The ignition behavior of a hypergolic liquid is influenced by ambient pressure, Therefore emphasis has been placed on the determination of how pressure affects the rates at which energy is released, absorbed, and distributed. The ignition phenomenon has been examined experimentally in a test facility, where it was possible to establish the relationship between small changes in physical environment and changes in ignition of hypergolic liquids. Ignition at low pressure was investigated with theoretical techniques, applying thermochemistry to determine amounts of energy involved, chemical kinetics to establish rates of energy release, evaporation studies to indicate rates of energy absorption, and heat transfer to clarify the distribution of energy within a propellant droplet. While the work has centered about the ignition of hydrazine-containing hypergolic liquids at low pressures, the attempt has also been made to derive generalizations which might apply to similar systems.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1973
Accession Number
AD0772756

Entities

People

  • Gene J. Antonides
  • Michel A. Saad
  • Samuel R. Goldwasser

Organizations

  • Santa Clara University

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Chemical Analysis
  • Chemical Kinetics
  • Chemical Reaction Properties
  • Chemical Reactions
  • Combustion
  • Combustion Products
  • Computer Programs
  • Energy
  • Equations
  • Heat Transfer
  • Ignition Lag
  • Liquid Phases
  • Liquid Propellants
  • Pressure Distribution
  • Reaction Mechanisms
  • Rocket Oxidizers
  • Test Facilities

Readers

  • Aerosol Science/Aerosol Physics
  • Combustion and Flow Dynamics.