Missile Aeroacoustic Response Modeling

Award Information
Agency:
Department of Defense
Branch
Army
Amount:
$729,970.00
Award Year:
2002
Program:
SBIR
Phase:
Phase II
Contract:
DAAH01-02-C-R002
Award Id:
52784
Agency Tracking Number:
A002-0573
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
174 North Main Street, P.O. Box 1150, Dublin, PA, 18917
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
929950012
Principal Investigator:
Sanford Dash
President & Chief Scienti
(215) 249-9780
dash@craft-tech.com
Business Contact:
Sanford Dash
President & Chief Scienti
(215) 249-9780
dash@craft-tech.com
Research Institute:
n/a
Abstract
"Dynamic pressure loads on missile airframes can produce severe vibrations which can be transmitted to sensitive internal components. Our Phase I effort initiated the development of a high fidelity computational package to predict such loads. A hybridRANS-LES framework was made operational analyzing loads from lateral jet firings and preliminary studies of AIT dynamic events (divert jet firings and shroud separation) were analyzed, including structural response analyses. For Phase II, we willinvestigate altitude dependencies on divert jet-induced loads expecting the most severe loads to occur in the 30-50km regime, where the flow is transitional. We will also investigate dynamic loads associated with AIT shroud separation and CKEM stageseparation events to minimize dynamic loads. Application of smart material technology for missile shells applications will be examined and experiments performed. Our work will utilize sub-scale and large-scale (LENS) test data and inclusion of smartmaterial fluid/structural coupling procedures. For missile systems such as X-ROD where divert jets impact on fins, use of an advanced unstructured code (with plume thermochemistry) will be utilized to perform aero-elastic calculations. We will besupported by Dr. Seiner/NCPA-U. Miss and Prof. Farhat/Univ. of Colorado in this effort, who are experts in aeroacoustics and structural response."

* information listed above is at the time of submission.

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