COMPUTATION OF AERODYNAMIC CHARACTERISTICS AND NONLINEAR STABILITY DERIVATIVES OF A FIGHTER/ATTACK AIRCRAFT AT HIGH ANGLES OF ATTACK

Award Information
Agency:
Department of Defense
Amount:
$130,000.00
Program:
SBIR
Contract:
N/A
Solitcitation Year:
N/A
Solicitation Number:
N/A
Branch:
Air Force
Award Year:
1987
Phase:
Phase II
Agency Tracking Number:
2324
Solicitation Topic Code:
N/A
Small Business Information
Vigyan Research Associates Inc
28 Research Dr, Hampton, VA, 23666
Hubzone Owned:
N
Woman Owned:
N
Socially and Economically Disadvantaged:
N
Duns:
N/A
Principal Investigator
 Sudhir C Mehrotra
 (804) 865-0794
Business Contact
Phone: () -
Research Institution
N/A
Abstract
MODERN TACTICAL AIRCRAFT FLYING AT HIGH ANGLES OF ATTACK ENCOUNTER VISCOUS SEPARATION, VORTEX FLOWS, VORTEX BREAKDOWN, UNSTEADY FLOW SITUATIONS AND THEIR EFFECTS ON THE LIFTING SURFACES DOWNSTREAM. IT IS VERY IMPORTANT TO ANALYZE THESE FLOWS IN ORDER TO PREDICT THE STABILITY DERIVATIVES ACCURATELY AND ALSO IT IS HIGHLY DESIRABLE THAT IN THE METHODS PREDICTING THE STABILITY DERIVATIVE OF THESE AIRCRAFTS AS MANY OF THESE PHENOMENA ARE INCLUDED TO REDUCE COSTLY WIND TUNNEL TESTS AND FLIGHT TESTS. HERE IT IS PROPOSED TO DEVELOP A COMPUTER PROGRAM TO PREDICT LONGITUDINAL AND LATERAL-DIRECTIONAL STABILITY DERIVATIVES OF A FIGHTER/ATTACK AIRCRAFT AT HIGH ANGLES OF ATTACK.

* information listed above is at the time of submission.

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