Unsteady Aerodynamics of Flapping Wings at Re=10,000-100,000 for Micro-Air Vehicles

Abstract

The overall project goal was to investigate low Reynolds number (10,000-100,000) flapping flight for MAV applications. Large-Eddy Simulations (LES) is used for unsteady aerodynamic analysis. The dominant force producing mechanism is the formation of a spiral leading edge-vortex (LEV). Effect of wind gusts and stroke deviation is investigated followed by the aerodynamics of a flapping fruit bat wing. Finally, very high Reynolds number dynamic stall on a pitching NACA-012 airfoil is studied. The work resulted in 3 archived journal publications,numerous conference proceedings,1 Ph.D. and 1 M.S. thesis. Two additional journal papers are under preparation.

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Document Details

Document Type
Technical Report
Publication Date
Feb 11, 2014
Accession Number
ADA603589

Entities

People

  • Danesh Tafti
  • Kamal Viswanath
  • Venkata R. Kasibhotla

Organizations

  • Virginia Tech

Tags

Communities of Interest

  • Air Platforms
  • Autonomy
  • Energy and Power Technologies
  • Human Systems

DTIC Thesaurus Topics

  • Aerodynamic Characteristics
  • Aerodynamics
  • Aircrafts
  • Engineering
  • Flow
  • Fluid Dynamics
  • Fluid Flow
  • Fluid Mechanics
  • Kinematics
  • Large Eddy Simulation
  • Leading Edges
  • Micro Air Vehicles
  • Reynolds Number
  • Simulations
  • Students
  • Three Dimensional
  • Unsteady Aerodynamics

Fields of Study

  • Physics

Readers

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  • Fluid Mechanics and Fluid Dynamics.
  • Technical Research and Report Writing.