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Coupled Vertical/Short Takeoff and Landing (VSTOL) Down Wash-Ground Effect and…

Award Information

Department of Defense
Award ID:
Program Year/Program:
2002 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Combustion Research and Flow Technology, Inc.
6210 Kellers Church Road Pipersville, PA -
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2002
Title: Coupled Vertical/Short Takeoff and Landing (VSTOL) Down Wash-Ground Effect and Ship Air Wake Turbulent Flow Simulation Model
Agency / Branch: DOD / NAVY
Contract: N68335-02-C-3057
Award Amount: $99,972.00


"Integration of aviation units with air capable Navy ships has always been a challenge. V/STOL aircraft, e.g. AV-8B, JSF, etc. encounter unique challenges in performing takeoff and landing during the course of shipboard operations due to the interaction ofthe propulsion-generated jet downwash with the unsteady air wake generated by the ship superstructure & deck. Operational envelopes must be developed through extremely expensive, time-consuming and demanding at-sea trials. Additionally, the powerful V/STOLjet outwash is a major safety hazard for ship deck personnel. The proposed effort will lead to thedevelopment and validation of a physics-based, high fidelity Computational Fluid Dynamic (CFD) model for predicting dynamic interface (DI) performance. Complexity of the geometry, magnitude of the domains entailed, and presence of a very broad range ofphysical phenomena make this into a challenging proposition. A novel unstructured CFD method is proposed which brings together: 1) innovations in CFD numerical algorithm; 2) resource efficient hybrid RANS-LES turbulence modeling; 3) turbulent flowfieldreconstruction using Proper Orthogonal Decomposition (POD); and 4) an advanced parallel architecture framework. A zonal simulation strategy has been formulated which provides optimum utilization of computational resources for simulating DI performance ofrealistic ship-aircraft at true conditions. The technology development proposed is directl

Principal Investigator:

Neeraj Sinha
Vice President & Tech Dir

Business Contact:

Neeraj Sinha
Vice President & Tech Dir
Small Business Information at Submission:

Combustion Research & Flow Technology, I
174 North Main Street, P.O. Box 1150 Dublin, PA 18917

EIN/Tax ID: 232759059
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No