| The rotor/wing aerodynamic interactions of the tilt rotor vehicle in hover is described in this dissertation.When the tilt rotor vehicle is in hover, the aerodynamic download of the rotor flowfield imposes on the wing. In this time, the rotor/wing interaction is severe. In order to understand the rotor/wing interaction each other, firstly, the change of the isolate rotor thrust with the collective pitch and rotate speed is tested, secondly, the change of the rotor thrust with the collective pitch , rotate speed and the wing/rotor distance is scaled, when the wing is placed underside the rotor, lastly, the pressure on the wing due to the rotor wake is scaled. After the data is analyzed, the software of FLUENT is used to calculate the flowfield. In order to make the calculation results agree with the experimental data, the model of the calculation has been modified based on the results of the experiment data.The results of research show that the rotor thrust increase 4% and the download force on the wing can be as large as 10 percent of the total rotor thrust. |
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