Aeroelastic Uncertainty Analysis Toolbox

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNX08CC56P
Agency Tracking Number: 075316
Amount: $99,947.00
Phase: Phase I
Program: SBIR
Awards Year: 2008
Solicitation Year: 2007
Solicitation Topic Code: A2.04
Solicitation Number: N/A
Small Business Information
Systems Technology, Inc.
13766 South Hawthorne Blvd., Hawthorne, CA, 90250-7083
DUNS: 02828
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 David Klyde
 Principal Investigator
 (310) 679-2281
Business Contact
 Suzie Fosmore
Title: Business Official
Phone: (310) 679-2281
Research Institution
Flutter is a potentially explosive phenomenon that is the result of the simultaneous interaction of aerodynamic, structural, and inertial forces. The analytical prediction of flutter in the transonic regime requires high fidelity simulation models that are computationally expensive. Due to the computational demands, traditional uncertainty analysis is not often applied to flutter prediction, resulting in reduced confidence in the results. This Phase I research is aimed at exploring methods to reduce the previous computational time limitations of traditional uncertainty analysis. To dramatically reduce the computational burden of uncertainty analysis, Systems Technology, Inc. proposes to investigate both the coupling of Design of Experiment (DOE) and Response Surface Methods (RSM), and the application of robust stability techniques, namely ƒÝ-analysis. Using Reduced Order Models (ROM), the DOE/RSM and ƒÝ-analysis approaches will be compared to traditional Monte Carlo based stochastic simulation. The result of the Phase I program will be to demonstrate the utility of the core elements of the Aeroelastic Uncertainty Analysis Toolbox (AUAT). AUAT will contain multiple methods for addressing flutter uncertainty analysis, coupled with a state-of-the-art nonlinear aeroelastic code.

* information listed above is at the time of submission.

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