CFD investigation of the helicopter-ship dynamic interface

Roper, David M., Owen, Ieuan and Padfield, Gareth D. (2005) CFD investigation of the helicopter-ship dynamic interface. In: 61st American Helicopter Society International Annual Forum 2005, 1 - 3 June 2005, Grapevine, Texas.

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Item Type:Conference or Workshop contribution (Paper)
Item Status:Live Archive


This study has been concerned with numerical predictions of the airwakes resulting from two simplified ship geometries: the internationally agreed Simple Frigate Shape (SFS1) and its successor (SFS2). Extensive steadystate simulations have been carried out for a wide range of wind conditions using Fluent, a commercially available computational fluid dynamics (CFD) code. Preliminary unsteady calculations have also been done. CFD predictions have been validated against wind tunnel data produced by the National Research Council of Canada (NRC) and have shown satisfactory or good agreement. The resulting airwake velocity components have been exported from Fluent, interpolated onto suitable grids and attached to the FLIGHTLAB flight-simulation environment. Using lookup tables, piloted flight trials have been carried out in the Liverpool full-motion simulator. The pilot workload and helicopter control limits resulting from a range of wind-over-deck (WOD) conditions have been used to plot the ship-helicopter operating limits (SHOL) for the SFS2. The workload was compared to the pilot's experiences and the simulated SHOL was contrasted with known SHOL's derived from sea trials, giving encouraging results.

Additional Information:Conference Code:98474
Keywords:Computational Fluid Dynamics codes, Dynamic interface, Helicopter control, National Research Council of Canada, Numerical predictions, Steady-state simulations, Velocity components, Wind-tunnel data, Computational fluid dynamics, Forecasting, Helicopters, Ships
Subjects:H Engineering > H141 Fluid Mechanics
H Engineering > H410 Aeronautical Engineering
Divisions:College of Science > School of Engineering
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ID Code:18261
Deposited On:17 Aug 2015 16:28

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