A STUDY OF ROCKET THRUST CONTROL BY GAS INJECTION

Abstract

A theoretical and experimental investigation of thrust control by secondary gas injection was completed. Thrust control is treated from the two aspects of thrust modulation and vector control. The thrust modulation study is concerned with the use of injection as a means of throttling the main nozzle flow. The performance (flow throttling and thrust) of a variety of secondary injection configurations was measured with a low pressure-ratio, axially symmetric nozzle as well as a high pressure-ratio, two-dimensional nozzle. The flow throttling results agree with an anlysis based on three flow models and the schlieren photographs (from the two-dimensional tests) show that all three types of flow occur. The vector control study concerns asymmetric secondary gas injection as a means of controlling the direction of the thrust vector.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1961
Accession Number
AD0324548

Entities

People

  • Fred E. Fahrenholz
  • Fred L. Gunter

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Combustion
  • Experimental Data
  • Flow
  • Flow Fields
  • Geometry
  • High Pressure
  • Hypervelocity Flow
  • Photographs
  • Photography
  • Pressure Distribution
  • Pressure Gradients
  • Pressure Measurement
  • Rocket Engines
  • Secondary Flow
  • Secondary Injection
  • Thrust Control
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Calculus or Mathematical Analysis
  • Internal Combustion Engine (ICE) Technology.