Approximate Theory for Calculation of Lift of Bodies, Afterbodies, and Combinations of Bodies

Abstract

An expression is developed for the lift of a slen%er afterbody in terms of the "slender-body" approximate potential at the after end in conjunction with a suitably calculated value of the potential at the forward end. The failure of the usual "slender-body" theory to predict any lift on a slender cylindrical afterbody is thereby corrected. The same expression is used to compute the part of the interference lift generated by the presence of a neighboring body, due to the interference upwash. Another expression is developed to compute the remainder of the interference lift, due to an interference pressure gradient. The lift is determined for a cone-cylinder body, a cylindrical afterbody of a slender wing body combination, and three combinations of bodies to illustrate the method.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1952
Accession Number
ADA380609

Entities

People

  • Barry Moskowitz

Organizations

  • National Aeronautics and Space Administration

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Aerodynamic Configurations
  • Aspect Ratio
  • Bodies
  • Cross Flow
  • Differential Equations
  • Dynamic Pressure
  • Equations
  • Fineness Ratio
  • Flow
  • Free Stream
  • Mach Number
  • Parabolic Bodies
  • Partial Differential Equations
  • Pressure Gradients
  • Slender Bodies
  • Static Pressure
  • Variable Pressure

Fields of Study

  • Engineering
  • Physics

Readers

  • Calculus or Mathematical Analysis
  • Fluid Mechanics and Fluid Dynamics.