AN INTEGRATED SIX-DEGREE-OF-FREEDOM TRAJECTORY AND AERODYNAMIC HEATING AND ABLATION COMPUTER PROGRAM (STRAB-6)

Abstract

An integrated computer program (STRAB-6) for the complete analysis of a blunt, conical reentry vehicle as to its trajectory and aerothermal environment upon atmospheric reentry is presented. The trajectory portion of the program calculates the vehicle motions in six-degrees-of-freedom, while the thermal portion calculates the aerodynamic heating and ablation of the vehicle. The earth model is an oblate, rotating spheroid whose parameters and gravitational potential are described herein. The equations of motion, the method of integration, thermal model and input forms for the program are discussed. The thermal model examined in this report assumes thick skin solution where the skin is of any composite structure made of discrete layers of material whose properties may vary from layer to layer. Also, the heatshield is comprised of one, two, or more different ablative materials. STRAB-6 computes nose- blunting and includes this effect in the aerodynamics. STRAB-6 is written in FORTRAN 4 for the CDC 6600 computer.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1968
Accession Number
AD0837645

Entities

People

  • W. J. Moulds

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Ablative Materials
  • Aerodynamic Heating
  • Base Pressure
  • Boundary Layer
  • Computational Fluid Dynamics
  • Computer Programs
  • Computers
  • Coordinate Systems
  • Differential Equations
  • Energy
  • Equations Of Motion
  • Fluid Dynamics
  • Geometry
  • Heat Transfer
  • Heat Transfer Coefficients
  • Plastic Explosives
  • Reentry Vehicles

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Computer Science.
  • Space Exploration and Orbital Mechanics.