Unsteady Airfoil Design Optimization with Application to Dynamic Stall

Award Information
Agency:
Department of Defense
Branch
n/a
Amount:
$99,986.00
Award Year:
2011
Program:
SBIR
Phase:
Phase I
Contract:
W911W6-11-C-0036
Award Id:
n/a
Agency Tracking Number:
A111-002-0286
Solicitation Year:
2011
Solicitation Topic Code:
A11-002
Solicitation Number:
2011.1
Small Business Information
6210 Kellers Church Road, Pipersville, PA, -
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
929950012
Principal Investigator:
Vineet Ahuja
Senior Research Scientist
(215) 766-1520
vineet@craft-tech.com
Business Contact:
Brian York
Treasurer and Principal Scientist
(215) 766-1520
york@craft-tech.com
Research Institution:
Stub




Abstract
One of the persistent problems affecting the aerodynamic performance of rotorcrafts is retreating blade stall that results in large pitching moments and hazardous control situations. Our primary goal is the development of an unsteady design optimization framework that can be applied to refine rotorcraft blade designs by delaying the onset of stall, and improving aerodynamic performance as well as lift cycle hysteresis. The proposed unsteady optimization framework utilizes an evolutionary algorithm, automated shape parameterization tool and a novel CFD derived analysis methodology for evaluating the objective function. The novel part of the framework is the unsteady analysis procedure that combines CFD, a modified Proper Orthogonal Decomposition Procedure (POD) and an Artificial Neural Network (ANN) to evaluate the objective function with the accuracy of a time-spectral method but at a fraction of the cost. The framework is readily applicable to Multi-Disciplinary Optimization (MDO) thereby leading to the inclusion of aero-elastic and aero-acoustic effects with minimal development. In Phase I we will demonstrate the applicability of the proposed framework to the shape optimization of a pitching airfoil without stall. In Phase II the problem of shape optimization with dynamic stall on a three-dimensional rotorcraft blade with and without MDO will be attempted.

* information listed above is at the time of submission.

Agency Micro-sites


SBA logo

Department of Agriculture logo

Department of Commerce logo

Department of Defense logo

Department of Education logo

Department of Energy logo

Department of Health and Human Services logo

Department of Homeland Security logo

Department of Transportation logo

Enviromental Protection Agency logo

National Aeronautics and Space Administration logo

National Science Foundation logo
US Flag An Official Website of the United States Government