A RIGIDLY FORCED OSCILLATION SYSTEM FOR MEASURING DYNAMIC-STABILITY PARAMETERS IN TRANSONIC AND SUPERSONIC WIND TUNNELS

Abstract

PERIMENTAL DATA, Mathematical analysis, Errors.) The mechanical and electrical details of a sting-mounted, rigidly forced, single-degree-offreedom, oscillating yaw mechanism is described. The equipment was designed for use in transonic and supersonic wind tunnels. Dynamic-stability parameters measured with the equipment are uninfluenced by airstream turbulence or buffeting. Aerodynamically unstable bodies do not cause the mechanism to diverge, and configurations with negative damping can be tested. The accuracy of the system was investigated by application of known eddy-current damping moments. Typical wind-tunnel results are presented for the damping in yaw and oscillatory directional stability of a simplified airplane model with 45 degrees sweptback wing and vertical tail at transonic speeds. (Author)

Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1962
Accession Number
AD0273569

Entities

People

  • Albert L. Braslow
  • Cullen Q. Lee
  • Harleth G. Wiley

Organizations

  • National Aeronautics and Space Administration

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Accuracy
  • Aerodynamic Configurations
  • Aircraft Equipment
  • Aircrafts
  • Airframes
  • Airplanes
  • Buffeting
  • Directional
  • Eddy Currents
  • Electronic Equipment
  • Errors
  • Mathematical Analysis
  • Supersonic Wind Tunnels
  • Sweptback Wings
  • Vehicle Equipment
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.

Technology Areas

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