USA flag logo/image

An Official Website of the United States Government

Rotor-Airwake Aerodynamic Coupling in Real-Time Simulation

Award Information

Department of Defense
Award ID:
Program Year/Program:
2012 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 2
Fiscal Year: 2012
Title: Rotor-Airwake Aerodynamic Coupling in Real-Time Simulation
Agency: DOD
Contract: N68335-12-C-0339
Award Amount: $749,904.00


An innovative approach for incorporating the coupled interaction between a ship airwake and rotor downwash in real-time dynamic interface simulations is proposed. The approach employs a database of high-fidelity ship-alone and coupled rotor-ship airwake CFD simulations to train an artificial neural network (ANN) based model of the recirculation effects due to the rotor downwash interaction with ship structures. Once trained, the ANN model will provides a real-time correction factor to the rotor inflow velocities used by the rotor model in the flight simulation. The ANN model thus provides a portable, fast-running, plug-in model to the flight simulator that will work with the current rotor and airwake models employed in the NAVAIR Manned Flight Simulator (MFS). The Phase I effort successfully demonstrated the feasibility of the proposed approach for a well defined, limited range of inputs. The will be expanded in Phase II to encompass a larger database of simulations, expanding the applicability of the model to all relative positions between the rotorcraft and ship and a range of ship wind-over-deck conditions. The model will be implemented and evaluated in the MFS flight simulation environment.

Principal Investigator:

Jeremy Shipman
Research Scientist
(215) 766-1520

Business Contact:

Brian York
Principal Scientist&Tre
(215) 766-1520
Small Business Information at Submission:

Combustion Research and Flow Technology,
6210 Kellers Church Road Pipersville, PA -

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