A Method of Estimating Upwash Angle at Noseboom-Mounted Vanes

Abstract

This technical information memorandum documents a theoretically-based method of estimating the upwash angle at noseboom-mounted vanes of an arbitrary aircraft. The method is commonly called the Yaggy-Rogallo technique and has been used successfully for many years at the NASA/Dryden Flight Research Center (NASA/DFRC) and the Air Force Flight Test Center (AFFTC). The technique divides any aircraft into a collection of bodies of revolution and thin airfoils, makes upwash angle estimates for each component, and combines the individual estimates into a single estimate. Development of the theory for upwash angle estimates of both bodies of revolution and thin airfoils are presented. Recent improvements in solution and use of the Yaggy-Rogallo equations are also presented. Guidelines for using the upwash angle estimates in data reduction and analysis are presented along with comparisons to flight test upwash calibration data showing excellent results. FORTRAN V computer programs were written to simplify and expedite making upwash angle estimates. Listings of the program code, a user's guide, and a programmer's guide are included in the memorandum.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1981
Accession Number
ADA106160

Entities

People

  • Kenneth Rawlings Iii

Organizations

  • Air Force Test Center

Tags

Communities of Interest

  • Air Platforms
  • Space

DTIC Thesaurus Topics

  • Aerodynamic Configurations
  • Air Force
  • Airborne Warning And Control System
  • Aircrafts
  • Bodies Of Revolution
  • Computer Programs
  • Computers
  • Coordinate Systems
  • Data Reduction
  • Engineering
  • Geometry
  • Lifting Bodies
  • Mach Number
  • Mainframe Computers
  • Standards
  • Swept Wings
  • Vehicles

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Computational Modeling and Simulation
  • Computer Science.