Accession Number:

ADA350942

Title:

Fluid, Stucture and Control Interaction

Descriptive Note:

Final technical rept. 1 May 95-30 Apr 98

Corporate Author:

VIRGINIA POLYTECHNIC INST AND STATE UNIV BLACKSBURG DEPT OF ENGINEERING SCIENCE AND MECHANICS

Personal Author(s):

Report Date:

1998-06-15

Pagination or Media Count:

7.0

Abstract:

This report summarizes the activities in the use of linear piezoceramic linear actuators coupled with control methods and wing aeroelastic models to increase flutter speeds of wingstore configurations. The work resulted in the successful submission of three journal articles and the completion of three proceedings papers, one invited lecture, and the completion of one PhD dissertation. Our results examine the use of modern control methods H infinity, loop transfer, LQGLQR, applied to the windstore flutter problem as modeled by a typical two-degree-of-freedom airfoil section coupled with the Jones approximation to the Theodorsen function for the incompressible aerodynamic loads. Physical values are taken from the GBU-UB weapons system mounted on an F-16. Actuator parameters are those of a piezoceramic, linear stroke, wafer device. Store aerodynamics are ignored. Results produce a substantial increase in flutter speed, and allow consideration of the store release problem. Preliminary results and modeling for solving the 3-D version were also investigated.

Subject Categories:

  • Aerodynamics
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE