INVESTIGATION AND FEASIBILITY DEMONSTRATION OF A VARIABLE AREA THROAT NOZZLE SYSTEM.

Abstract

This program consists of choosing a nozzle concept for a throttleable, restartable solid rocket motor and to develop and demonstrate this concept through test firings. Three small subsonic pintle nozzles were tested. Each nozzle was designed to generate specific data for evaluation of certain parameters which are difficult to determine analytically. These parameters were oxide deposition, thermal growth, heat transfer coefficients, and radiation cool down effects. A series of tests were also carried out to evaluate O ring seals for restart applications. Both silicone and fluorocarbon materials were capable of being restarted a number of times provided that the soak temperature that they were exposed to did not exceed 750 F. The results of these tests were used in designing the first nozzle for the demonstration phase of this program. The design was completed and the nozzle was being fabricated. (Author)

Document Details

Document Type
Technical Report
Publication Date
Dec 25, 1965
Accession Number
AD0369019

Entities

People

  • Heinz A. Jaffe

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Coefficients
  • Demonstrations
  • Films
  • Fluorinated Hydrocarbons
  • Fluoropolymers
  • Heat Transfer
  • Heat Transfer Coefficients
  • Materials
  • O Rings
  • Radiation
  • Rings
  • Rocket Engines
  • Rockets
  • Test And Evaluation

Readers

  • Combustion and Flow Dynamics.
  • Rocket Propulsion.
  • Software Engineering