NEWTONIAN SNOWPLOW THEORY OF OSCILLATING AIRFOILS

Abstract

Unsteady forces acting on two-dimensional oscillating airfoils are calculated by Newtonian snowplow theory. A pressure formula which is valid for linear and nonlinear oscillations is obtained, and comparisons are made with the exact, linearized gasdynamic theory for a hypersonic slender wedge. These comparisons indicate that Newtonian theory is not very accurate for the calculation of unsteady stability derivatives and seems to be inferior to estimates made using simple impact theory.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1966
Accession Number
AD0633971

Entities

People

  • A. F. Charwat
  • J. Aroesty
  • J. D. Cole
  • S. Y. Chen

Organizations

  • RAND Corporation

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Angular Acceleration
  • Bodies
  • Coefficients
  • Coordinate Systems
  • Displacement
  • Experimental Data
  • Flight
  • Flow
  • Frequency
  • Hypersonic Flight
  • Hypersonic Velocity
  • Oscillation
  • Shock Waves
  • Slender Bodies
  • Steady Flow
  • Two Dimensional
  • Unsteady Flow

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.

Technology Areas

  • Hypersonics
  • Hypersonics - Hypersonic Boundary Layers