Optimization of Parameter Identification for Flutter and Flying Qualities

Award Information
Agency:
Department of Defense
Branch
Air Force
Amount:
$599,928.00
Award Year:
2007
Program:
SBIR
Phase:
Phase II
Contract:
FA9302-07-C-0014
Award Id:
78871
Agency Tracking Number:
F061-313-1215
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
13766 S. Hawthorne Blvd., Hawthorne, CA, 90250
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
028281020
Principal Investigator:
DavidKlyde
Principal Research Engine
(310) 679-2281
dklyde@systemstech.com
Business Contact:
ThomasMyers
Vice-President & Technica
(310) 679-2281
exec@systemstech.com
Research Institute:
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. 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 create a software solution based on the use of innovative parameter identification techniques that work with short duration, pulse-like inputs, which are easily generated by a pilot in a flight test environment. Wavelet-based techniques are used to identify frequency responses from which damping and frequency of critical flutter modes or flying qualities metrics can then be determined as part of on-line flight test activities.

* information listed above is at the time of submission.

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