This paper presents the recent developments made at ONERA for the prediction of helicopter rotor-fuselage aerodynamic interactions. A time-averaged actuator disk model has been implemented in the FLU3M code to simulate the rotor. Applications on isolated rotors, isolated fuselages as well as complete helicopter configurations are performed using the Euler and Navier-Stokes options of the code. The numerical results are compared with theoretical and experimental results. Results from other codes are also used to validate the FLU3M software. Numerical results show the deep modifications of the flowfield around the helicopter fuselage when the rotor inflow is taken into account. The main rotor-fuselage aerodynamic interactions are well predicted by the FLU3M code. Comparisons between theoretical, experimental and numerical results show that the chosen time-averaged approach can be an interesting tool to predict the complex aerodynamics around helicopters.
Rotor fuselage interaction: Euler and Navier-Stokes computations with an actuator disk
1999
20 Seiten, 31 Quellen
Conference paper
English
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