Improvements in Pitch Damping for the Aeroprediction Code with Particular Emphasis on Flare Configurations

Abstract

New capability has been added to the NSWC aeroprediction code to allow aerodynamics to be predicted for Mach numbers up to 20 for configurations with flares. This new capability includes extending the static aerodynamic predictions for Mach numbers less than 1.2, improving the body alone pitch damping for Mach numbers above 2.0, and developing a new capability for pitch damping of flared configurations at Mach numbers up to 20. This new capability for flared configurations was validated for several different configurations in the Mach number range of 2 to 8.8. In general, pitch damping predictions of the improved capability was within 20 percent of either experimental data or computational fluid dynamics calculations. This accuracy level is believed to be quite adequate for dynamic derivatives in the preliminary design stage. These new additions to the aeroprediction code will be transitioned to users as part of the 2002 version of the code (APO2).

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 2000
Accession Number
ADA375056

Entities

People

  • Frankie G. Moore
  • Tom C. Hymer

Organizations

  • Naval Surface Warfare Center

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Aerial Warfare
  • Aerodynamics
  • Boundary Layer
  • Computational Fluid Dynamics
  • Databases
  • Defense Systems
  • Engineering
  • Equations
  • Experimental Data
  • Fluid Dynamics
  • Geography
  • Mach Number
  • Military Research
  • Physics Laboratories
  • United States Naval Academy
  • Warfare

Fields of Study

  • Physics

Readers

  • Control Systems Engineering.
  • Fluid Mechanics and Fluid Dynamics.
  • Software Engineering