Optimization of Parameter Identification for Flutter and Flying Qualities

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA9302-06-M-0005
Agency Tracking Number: F061-313-1215
Amount: $99,972.00
Phase: Phase I
Program: SBIR
Awards Year: 2006
Solicitation Year: 2006
Solicitation Topic Code: AF06-313
Solicitation Number: 2006.1
Small Business Information
SYSTEMS TECHNOLOGY, INC.
13766 S. Hawthorne Blvd., Hawthorne, CA, 90250
DUNS: 028281020
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 David Klyde
 Principal Research Engineer
 (310) 679-2281
 dklyde@systemstech.com
Business Contact
 Thomas Myers
Title: Vice President
Phone: (310) 679-2281
Email: exec@systemstech.com
Research Institution
N/A
Abstract
An important outcome of both flutter and flying qualities flight testing is the assurance of safe aircraft operation within its operational flight envelope. Thus, the objective of flutter testing is to demonstrate that the aircraft is aeroelastically stable within the envelope, while the objective of flying qualities testing is to demonstrate that the aircraft is controllable within the envelope. Although the frequency ranges of interest are quite different, both flutter and flying qualities testing traditionally require several minutes of data at a given flight condition using frequency sweep, chirp, or other long duration inputs from which critical parameters can then be estimated. To dramatically reduce this time to five seconds or less, Systems Technology, Inc. (STI) proposes to use an innovative wavelet-based parameter identification technique that has been shown to work best with simple pulse-like inputs that are easily generated in a flight test environment. The technique can be used to identify transfer functions (or state space matrices) from which damping and frequency of critical flutter modes or flying qualities metrics can then be determined

* information listed above is at the time of submission.

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