Air-loads Prediction of a UH-60A Rotor Inside the 40- by 80-Foot Wind Tunnel

Abstract

The presented research extends the capability of a loose coupling computational fluid dynamics (CFD) and computational structure dynamics (CSD) code to calculate the flow-field around a rotor and test stand mounted inside a wind tunnel. Comparison of predicted air-load results for a full-scale UH-60A rotor recently tested inside the National Full-Scale Aerodynamics Complex (NFAC) 40- by 80-Foot Wind Tunnel at Ames Research Center and in free-air flight are made for three challenging flight data points from the earlier conducted UH-60A Air-loads Program. Overall results show that the extension of the coupled CFD/CSD code to the wind-tunnel environment is generally successful.

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Document Details

Document Type
Technical Report
Publication Date
Jan 22, 2010
Accession Number
ADA529292

Entities

People

  • Ethan A. Romander
  • Hyeonsoo Yeo
  • I-chung Chang
  • Mark Potsdam

Organizations

  • National Aeronautics and Space Administration

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boundary Layer
  • California
  • Computational Fluid Dynamics
  • Couplings
  • Environment
  • Flow Fields
  • Fluid Dynamics
  • Fluid Flow
  • Helicopters
  • Hydrodynamics
  • Mach Number
  • Potential Flow
  • Rotary Wing Aircraft
  • Test Stands
  • Viscous Flow
  • Wind Tunnel Tests
  • Wind Tunnels

Fields of Study

  • Engineering

Readers

  • Aerodynamics/Aeronautics.
  • Aerospace Engineering
  • Electrical Engineering