Aerodynamics of Wraparound Fins in Supersonic Flow

Abstract

Existing supersonic fin theory has been modified to compute the pressure distribution over Wraparound Fin (WAF). Evvard's theory has been used to calculate the pressure loading due to Angle-of-Attack (AoA) on a WAF by including fin curvature as a variable in the definition of zones of influence. Evvard's theory uses the intersections of the fin surface and the Mach cones originating from the leading edge discontinuities to split the fin surface into regions of influence. For a planar fin, the intersections are linear; however, the intersections on a curved fin form curved lines. By redefining the Mach lines to account for fin curvature and using an empirically derived induced AoA, the application of Evvard's theory can be extended to accurately compute the unique aerodynamic characteristic of WAFs.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 2006
Accession Number
ADA447214

Entities

People

  • Brett L. Wilks

Tags

Communities of Interest

  • Cyber
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aerodynamic Characteristics
  • Aerodynamics
  • Air Force
  • Computational Fluid Dynamics
  • Computer-Aided Design
  • Curvature
  • Flow
  • Fluid Dynamics
  • Geometric Forms
  • Geometry
  • Leading Edges
  • Multiple Launch Rocket System
  • Pressure Distribution
  • Supersonic Flow
  • Three Dimensional
  • United States
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Calculus or Mathematical Analysis

Technology Areas

  • Hypersonics
  • Hypersonics - Hypersonic Boundary Layers