A Study On Wind Tunnel Test Techniques Of Helicopter Rotor/Fuselage Aerodynamic Interactions

Aerodynamic interactions between the rotor and the fuselage is the main aerodynamic problem of ahelicopter, which affects the vibration, control and the noise of a helicopter. Experimental methods areused to study the helicopter rotor/fuselage aerodynamic interactions based on the model ROBINfuselage and a model rotor. The relevant experimental data obtained for the helicopterrotor/aerodynamic body of theoretical calculations provide a test basis.The general conditions of the wind tunnel test techniques of helicopter rotor/fuselage/tailaerodynamic interactions were summarized in this paper, and the test devices and the aerodynamictest contents in wind tunnel are also introduced briefly. The methods of the steady and periodicpressure measurements are detailed in this paper. The testing model which meets testing programrequirements is designed. Then wind tunnel tests are done to get the relevant experimental data aboutaerodynamic torque and body surface pressure. At last, the tests on rotor/fuselage androtor/fuselage/horizontal aerodynamic interactions are done to get the relevant experimentaldata about aerodynamic torque and body surface pressure. Results of the experiments are compared toget the aerodynamic interactions of the rotor and the fuselage.