Effect of Pressure on Ignition of Hypergolic Liquid Propellants
SANTA CLARA UNIV CA DEPT OF MECHANICAL ENGINEERING
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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.
- Combustion and Ignition