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

Award Information
Agency:
Department of Defense
Branch
Air Force
Amount:
$130,000.00
Award Year:
1987
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Agency Tracking Number:
2324
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Vigyan Research Associates Inc
28 Research Dr, Hampton, VA, 23666
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Sudhir C Mehrotra
(804) 865-0794
Business Contact:
() -
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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