An Analytic Model for Aerodynamic Shapes

Abstract

Exact analytical models represent a viable alternative for applications requiring geometric constructs with a level of surface perfection unachievable with traditional polynomial techniques. To avoid the limitations in shape complexity normally associated with traditional analytic models, a model based upon a topological transformation of a lofted surface was developed. The consequence is, if not an equation of all shapes, then, at least, an equation describing a great many arbitrarily complicated shapes. A full theoretical development of the model is presented along with a model-implementing FORTRAN source module and some example geometries. Keywords: Computer graphics; Lofted surface; Superquadric; Analytic surface model, Surface modelling; Topological transformation.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1988
Accession Number
ADA191573

Entities

People

  • Michael J. Vrabel

Organizations

  • Harry Diamond Laboratories

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Materials and Manufacturing Processes
  • Weapons Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Birds
  • Classification
  • Computer Graphics
  • Computer Programs
  • Computer Science
  • Data Sets
  • Ecology
  • Electrical Engineering
  • Engineering
  • Equations
  • Geometry
  • Jet Propulsion
  • Model Theory
  • Security
  • Three Dimensional
  • Transitions

Readers

  • Computational Modeling and Simulation
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Graph Algorithms and Convex Optimization.