Viscous Theory of Lift on Bodies of Revolution

Abstract

The viscous theory of unsteady lift on bodies of revolution is developed. The exact potential theory is derived and reduced to an integral equation for an unknown load function in terms of a generalized upwash function. The integral is formally the same as two-dimensional wing theory and the viscous modification of the kernel function is based on the principles of wing theory and detailed analysis of a ring-wing. Numerical results are presented for the ring-wing in steady flow that are in agreement with the predictions of slender body theory for small diameter to length ratios. Asymptotic results for very large diameter to length ratios are in exact agreement with previously reported theoretical results and approximate agreement with experiment.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1982
Accession Number
ADA122549

Entities

People

  • John E. Yates

Tags

Communities of Interest

  • Air Platforms
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Bodies
  • Bodies Of Revolution
  • Boundary Layer
  • Chebyshev Polynomials
  • Control Surfaces
  • Equations
  • Flow
  • Integral Equations
  • Kernel Functions
  • Load Distribution
  • Potential Flow
  • Potential Theory
  • Reynolds Number
  • Ring Wings
  • Slender Bodies
  • Steady Flow
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Theoretical Analysis.