THE ISENTROPIC COMPRESSION TUBE: A NEW APPROACH TO GENERATING HYPERVELOCITY TEST FLOWS WITH LOW DISSOCIATION

Abstract

A new approach to generating high-velocity air flows with very low ambient dissociation levels is discussed. Briefly, the approach utilizes a nonsteady isentropic compression wave which is focused through an area contraction to accelerate and compress the test gas. This processed gas may be used directly as a test medium or may be allowed to expand non-steadily through the expansion wave which appears at the focal point of the compression wave system. In either case, the flow may be further expanded in a nozzle if so desired. The advantages and disadvantages of both methods of operation are discussed. The problem of generating the required wave motion is presented in some detail and preliminary studies of several possible driving techniques are summarized.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1967
Accession Number
AD0659154

Entities

People

  • A. Hertzberg
  • F. J. Stoddard
  • J. Gordon Hall

Organizations

  • Calspan

Tags

Communities of Interest

  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aeronautical Laboratories
  • Air Flow
  • Air Force
  • Base Pressure
  • Chemical Composition
  • Compression Waves
  • Diagrams
  • Fluid Dynamics
  • High Pressure
  • Mach Number
  • Magnetic Fields
  • New York
  • Robots
  • Schematic Diagrams
  • Shock Tubes
  • Shock Waves
  • Stagnation Pressure

Readers

  • Combustion Dynamics and Shock Wave Physics.
  • Combustion and Flow Dynamics.
  • Computational Modeling and Simulation

Technology Areas

  • Hypersonics
  • Hypersonics - Hypersonic Flight
  • Hypersonics - Hypersonic Flow