Computational Fluid Dynamics Study for a Deep Stall Air Vehicle

Abstract

The aerodynamic characteristics of a vehicle in deep-stall conditions are investigated and the motion of the vehicle is predicted in a self-consistent manner. Three-dimensional unsteady computations of the complete aircraft with prescribed control surface deflections are carried out. Both steady and unsteady flow simulations are performed to map out the lift, drag, and moment as a function of various flight and control surface parameters. The unsteady forces and moments were computed, and the resulting unconstrained trajectory based on the 6-dof model of the vehicle is simulated at high angles of attack.

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Document Details

Document Type
Technical Report
Publication Date
May 31, 2011
Accession Number
ADA546062

Entities

People

  • Ravi Ramamurti

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aerodynamic Characteristics
  • Aircrafts
  • Airframes
  • Collision Avoidance
  • Computational Fluid Dynamics
  • Coordinate Systems
  • Flow
  • Fluid Dynamics
  • Geometry
  • High Angles
  • Pressure Distribution
  • Three Dimensional
  • Trim Angle
  • Unmanned Aerial Vehicles
  • Unsteady Flow
  • Vehicles

Fields of Study

  • Physics

Readers

  • Computational Fluid Dynamics (CFD)
  • Fluid Mechanics and Fluid Dynamics.
  • Robotics and Automation.