Hybrid Prediction Method for Aircraft Interior Noise

Award Information
Agency:
National Aeronautics and Space Administration
Amount:
$599,280.00
Program:
SBIR
Contract:
NNL06AA04C
Solitcitation Year:
2004
Solicitation Number:
N/A
Branch:
N/A
Award Year:
2006
Phase:
Phase II
Agency Tracking Number:
041354
Solicitation Topic Code:
A2.04
Small Business Information
ESI US R&D
202 North Curry Street, Suite 100, Carson City, NV, 89703-4121
Hubzone Owned:
N
Woman Owned:
Y
Socially and Economically Disadvantaged:
N
Duns:
009737904
Principal Investigator
 Bryce Gardner
 Principal Investigator
 (858) 350-0057
 Bryce.Gardner@esi-group-na.com
Business Contact
 Jane Trenaman
Title: COO
Phone: (248) 203-0642
Email: jane.trenaman@esi-group-na.com
Research Institution
N/A
Abstract
The goal of the project is research and development of methods for application of the Hybrid FE-SEA method to aircraft vibro-acoustic problems. This proposal discusses the development and application of new methods of structural-acoustic analysis in order to address existing problems in aircraft interior noise prediction. The proposed methods are based on a hybrid modeling strategy that combines Finite Element Analysis (FEA) and Statistical Energy Analysis (SEA). Over the past five years, Vibro-Acoustic Sciences has devoted a considerable research effort towards the development of a framework for combining these two analysis methods. Recent research carried out by over the past two years has resulted in the development of a rigorous solution to this problem. The resulting Hybrid approach has been derived in general terms and validated for a number of simple structural-acoustic problems. However, the method has not yet been applied to aircraft interior noise prediction. A number of candidate aircraft interior noise problems have been identified which would benefit greatly from the use of the Hybrid method. The aims of the research described in this proposal are therefore: (i) to demonstrate the application of the Hybrid method to a number of existing aircraft interior noise problems, (ii) to develop the method to ensure it contains sufficient functionality to address practical aircraft interior noise problems and (iii) to demonstrate the value of the method in the prediction and reduction of noise in airframe systems.

* information listed above is at the time of submission.

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