IDENTIFICATION

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$50,000.00
Award Year:
1985
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
2808
Agency Tracking Number:
2808
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
101 University Avenue, Palo Alto, CA, 94301
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
DR. ROBERT A. WALKER
PRINCIPAL INVESTIGATOR
() -
Business Contact:
() -
Research Institute:
n/a
Abstract
REAL-TIME FLUTTER PREDICTION INCLUDING CLOSE MODES CAN BE EFFECTIVELY ESTIMATED FROM TURBULENCE OR ON-BOARD EXCITATIONWITH AN EXTENDED KALMAN FILTER(EKF) APPROACH. THE THE PHYSICALLY BASED MODEL FORM ENABLES PREDICTION OF THE DAMPING RATE AS WELL AS DAMPING GIVING A TIME TO UNSTABILITYESTIMATE WITH IT'S VARIANCE. THE APPROACH IS RECURSIVE AND CAN OPERATE A SYNNCCHRON AND CAN OPERATE A SYNCHRONOUSLY TO DROP ATA OUTLINERS AND HENCE IS QUITE ROBUST. IT'S SPEED IS REASONABLE FOR ON-LINEAPPLICATION BUT ALSO CAN BE USED EFFECTIVELY AS AN OFF-LINE ANALYSIS TOOL FOR APPLICATION TO ANY MODEL TESTING SITUATION.

* information listed above is at the time of submission.

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