A Computer Program for the Performance Analysis of Scarfed Nozzles

Abstract

An analysis is presented for predicting the performance of scarfed propulsive nozzles. The model assumes that the scarfing is not severe, so that the flow within the nozzle is axisymmetric. The flowfield within the nozzle and the scarfed nozzle extension is calculated by the method of characteristics. The oblique shock wave emaninating from the junction of the nozzle and the scarfed nozzle extension is fitted discretely and tracked through the flowfield. The nozzle forces are determined by integrating the wall pressure distribution. Nozzle axial and side forces are calculated, and missile axial and side forces are determined. A computer program implementing the analysis is discussed. Fifteen sample cases are presented to illustrate the use of the computer program.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1984
Accession Number
ADA147370

Entities

People

  • Jason Hoffman

Organizations

  • Battelle Memorial Institute

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Artificial Intelligence
  • Computer Programs
  • Conical Nozzles
  • Coordinate Systems
  • Differential Equations
  • Flow Fields
  • Geometry
  • Jet Propulsion
  • Mach Number
  • Nanofibers
  • Nozzles
  • Plastic Explosives
  • Pressure Distribution
  • Real Variables
  • Self Assembly
  • Three Dimensional
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Combustion and Flow Dynamics.