Coupled CFD/GN&C Modeling for a Smart Material Canard Actuator

Abstract

The performance of a smart material canard actuator has been investigated using coupled computational fluid dynamics, guidance navigation and control, and structural models. The predictions show that the open-loop response of the smart material actuator does not produce the commanded deflection due to the interaction of the externally applied aerodynamic hinge moment with the flexible actuator structure. A closed-loop feedback control law with integral control is applied in order for the canard to attain the commanded deflection. However, the predictions show that the gain for the integral controller must be correctly selected to obtain the proper response of the canard. The selected gain is dependent on both the structural characteristics of the actuator and the applied aerodynamics.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2007
Accession Number
ADA474071

Entities

People

  • Paul Weinacht

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Aerodynamic Characteristics
  • Aerodynamics
  • Computational Fluid Dynamics
  • Computational Science
  • Control Systems
  • Deflection
  • Differential Equations
  • Dynamic Response
  • Elastic Properties
  • Equations
  • Equations Of Motion
  • Fluid Dynamics
  • Guidance
  • Materials
  • Mechanical Properties
  • Mechanics
  • Navigation

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Control Systems Engineering.
  • Materials Science and Engineering.