Deconstructing Hub Drag. Part 2. Computational Development and Anaysis

Abstract

Development, validation and demonstration of a computational approach to model complex rotorcraft hubs, their components and their wakes for both static and rotating operation has been developed. A priori computations were compared with experimental results to yield high confidence in the computational analysis. The hub was analyzed for its total and component drag, including interference drag. Components include hub plates, shanks, pitch links, scissors, and hardware. Wake turbulent spectra were obtained for the near and far field wakes, and wake velocities in the near wake. Scaling, influence of the fuselage, and physics of the wake were all explored. With the highly accurate computational approach developed, design and analysis of hubs can be conducted using computations directly on full-scale configurations.

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Document Details

Document Type
Technical Report
Publication Date
Sep 30, 2013
Accession Number
ADA590986

Entities

People

  • Marilyn J. Smith
  • Rajiv Shenoy

Organizations

  • Georgia Tech

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aircrafts
  • Airframes
  • Boundary Layer
  • Computational Fluid Dynamics
  • Computational Science
  • Data Analysis
  • Differential Equations
  • Flow Visualization
  • Fluid Dynamics
  • Fluid Flow
  • Mechanical Properties
  • Pressure Distribution
  • Three Dimensional
  • Turbulent Mixing
  • Viscous Flow
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Computational Modeling and Simulation
  • Electrical Engineering
  • Fluid Mechanics and Fluid Dynamics.