SOME CONSIDERATIONS OF THE EFFECTS OF MASS TRANSFER ON AERODYNAMIC PITCH DAMPING COEFFICIENTS

Abstract

Previous hypersonic wind tunnel tests have demonstrated that ablation can drastically alter the dynamic stability of a re-entry vehicle or decoy. A qualitative explanation, of this effect is presented which explains these past results, wherein decreased stability was obtained with ablation aft of the center of rotation and vice versa. Preliminary results from a wind tunnel test program utilizing phased blowing from a model to simulate ablation are presented. The steps being taken to improve the degree of simulation in future tests are described. (Author)

Document Details

Document Type
Technical Report
Publication Date
Apr 30, 1965
Accession Number
AD0363979

Entities

People

  • John J. Casey

Tags

DTIC Thesaurus Topics

  • Ablation
  • Coefficients
  • Hypersonic Wind Tunnels
  • Mass Transfer
  • Rotation
  • Simulations
  • Simulators
  • Wind Tunnel Tests
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Fluid Mechanics and Fluid Dynamics.
  • Missile Defense Systems.

Technology Areas

  • Hypersonics
  • Hypersonics - Hypersonic Boundary Layers
  • Hypersonics - Hypersonic Flight
  • Hypersonics - Hypersonic Flow