ADVANCED AERODYNAMIC SPIKE CONFIGURATIONS. VOLUME II. HOT-FIRING INVESTIGATIONS: 1. BASIC PERFORMANCE VS ALTITUDE AND SECONDARY FLOW; 2. PERFORMANCE IN SLIPSTREAM; 3. LIQUID (N2O4) SIDE INJECTION TVC

Abstract

Three hot-firing aerodynamic spike nozzle programs are described. One program had as its objective to obtain a large background of parametric hot- firing aerospike performance data. Performance data were obtained over a range of pressure ratio from approximately 350 down to 22. Thirty 8-second each duration firings, 10 at near sea level conditions and 20 over a range of high pressure ratio, were conducted. Secondary flowrate was varied from zero to 5 percent of primary flowrate and supplied by a gas generator. Fifty-seven firings of 1 minute each duration were accomplished. Still air nozzle efficiency was very high and significant performance improvement was obtained with the addition of secondary flow. Nozzle performance was relatively unaffected by slipstream in the nozzle operating region of practical interest for booster engine application.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1967
Accession Number
AD0384856

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Combustion
  • Computational Fluid Dynamics
  • Computer Programs
  • Fluid Dynamics
  • Heat Transfer
  • Measurement
  • Plastic Explosives
  • Pressure Distribution
  • Pressure Measurement
  • Recording Systems
  • Rocket Engines
  • Rocket Oxidizers
  • Strain Gages
  • Test And Evaluation
  • Test Facilities
  • Wind Tunnels

Readers

  • Aerodynamics/Aeronautics.
  • Combustion and Flow Dynamics.
  • Internal Combustion Engine (ICE) Technology.