Prediction of Unsteady Transonic Aerodynamics

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$98,868.00
Award Year:
2011
Program:
SBIR
Phase:
Phase I
Contract:
NNX11CG74P
Award Id:
n/a
Agency Tracking Number:
104203
Solicitation Year:
2010
Solicitation Topic Code:
A2.04
Solicitation Number:
n/a
Small Business Information
1644 Clay Drive, Los Altos, CA, 94024-6251
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
832880517
Principal Investigator:
David Nixon
Principal Investigator
(650) 964-9956
davidnixon@sbcglobal.net
Business Contact:
David Nixon
Business Official
(650) 964-9956
davidnixon@sbcglobal.net
Research Institute:
Stub




Abstract
An accurate prediction of aero-elastic effects depends on an accurate prediction of the unsteady aerodynamic forces. Perhaps the most difficult speed regime is transonic where the motion of the shock wave and its interaction with the boundary layer are dominant factors. In spite of over 40 years research into the computation of unsteady transonic aerodynamics there still appear to be areas where available technology is inadequate. A research axiom is that if a particular viewpoint fails to resolve an issue then the problem should be viewed differently. The research proposed here is to re-examine some issues in unsteady transonic aerodynamics using some recent theoretical developments. All aspects of unsteady transonic flow, including limit cycles and control strategies will be considered.

* information listed above is at the time of submission.

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