Accession Number:

ADA458295

Title:

Active Control of Supersonic Impinging Jets Using Supersonic Microjets

Descriptive Note:

Final rept. 1 Jan 2003-31 Dec 2005

Corporate Author:

FLORIDA AGRICULTURAL AND MECHANICAL UNIV TALLAHASSEE

Personal Author(s):

Report Date:

2005-01-01

Pagination or Media Count:

71.0

Abstract:

A comprehensive experimental investigation on the use of microjets for the control of supersonic impinging jets was conducted under this research program. Supersonic impinging jets occur in many applications including in STOVL aircraft where they lead to a highly oscillatory flow with very high unsteady loads on the nearby aircraft structures and the landing surfaces. Prior research has shown that microjets, placed around the main jet periphery, are very effective in reducing the flow unsteadiness and the associated dynamic loads. In the present work, our goal was to better understand the physical properties of supersonic impinging jets through detailed experiments and to develop optimal open and closed-loop control strategies in order to produce efficient control over the range of conditions impinging jet-related problems are significant.

Subject Categories:

  • Aircraft
  • Fluid Mechanics
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE