Combustion Diagnostics and Flow Visualization of Hypergolic Combustion and Gelled Mixing Behavior

Abstract

The combustion of Hypergolic bipropellants in missile systems where the oxidizer and fuel are gelled involve important areas of research: ignition time delay, chemical kinetics, atomization, and liquid phase mixing. Measurements of the total ignition time delay for Hydrazine and Red Fuming Nitric Acid (RFNA) and UDMH/RFNA have been accurately measured using a droplet contact technique. The results show the effect of fuel/oxidizer ratio an the total ignition time delay involves initial contact, quiescent mixing in the liquid phase, gas evolution and combustion in the vapor phase. The liquid phase mixing and the gas evolution comprise the most significant fraction of the total ignition time delay in comparison to the chemical ignition time delay.

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Document Details

Document Type
Technical Report
Publication Date
Dec 19, 1997
Accession Number
ADA344468

Entities

People

  • Douglas A. Feikema
  • James L. Smith

Organizations

  • University of Alabama in Huntsville

Tags

Communities of Interest

  • Materials and Manufacturing Processes
  • Weapons Technologies

DTIC Thesaurus Topics

  • Chemical Kinetics
  • Chemical Reactions
  • Chemistry
  • Combustion
  • Engineering
  • Flow Visualization
  • Fluid Mechanics
  • Fluids
  • Hydrazines
  • Ignition
  • Laser Induced Fluorescence
  • Liquid Phases
  • Liquid Propellants
  • Nitric Acid
  • Propellants
  • Propulsion Systems
  • Rocket Oxidizers

Readers

  • Combustion science or combustion engineering.
  • Rocket Propulsion.