Comparison of Various Drag Coefficient Expansions Using Polynomials and Splines,

Abstract

The longitudinal differential equation of motion has been used to investigate various aerodynamic expansion techniques. The total drag coefficient was expanded using conventional polynomials and splines with and without floating knot locations. This paper discusses the various four separate flights (time vs distance measurements) and outlines the potential advantages and/or disadvantages of the various aerodynamic expansion techniques. It is believed that this is the first time splines have been used in the aerodynamic coefficient estimation process and that these results and techniques are germane to other applications. Originator supplied keywords include: Aerodynamic Modeling, and Numerical Integration.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1984
Accession Number
ADA152765

Entities

People

  • G. L. Winchenbach
  • G. T. Chapman
  • S. M. Sabot

Tags

Communities of Interest

  • Materials and Manufacturing Processes
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aerodynamic Characteristics
  • Aerodynamic Forces
  • Aerodynamics
  • Air Force
  • Air Force Facilities
  • Classification
  • Data Reduction
  • Differential Equations
  • Drag
  • Equations
  • Equations Of Motion
  • Flight
  • Free Flight
  • Measurement
  • Physics Laboratories
  • Polynomials
  • Security

Fields of Study

  • Engineering

Readers

  • Aerodynamics/Aeronautics.
  • Approximation Theory.
  • Systems Analysis and Design