An experimental study has been carried at the Aerodynamic Measurement Methodology laboratory of CIRA (Centro Italiano Ricerche Aerospaziali). The scope of the investigation was the characterization of the loads and of the wake behaviour of a scaled rotor test rig simulating a drop test. A 3D circular cylinder was selected as representative of a typical sling load, the experimental set up having been carefully designed also with the aid of FEM analyses. The overall performances of the scaled rotor have been retrieved by the measure of its Figure of Merit and several measurements have been performed to characterize the wake and the pressure load upon the cylindrical body. The wake flow has been carefully analysed by PIV measurements and a tracking algorithm has been implemented to identify and characterize the tip vortices. The overall properties of the wake have been retrieved and a qualitative description of the tip vortices evolution and of their properties is proposed.
Nargi, R.E., De Gregorio, F., Camussi, R. (2018). Four blades rotor model aerodynamic characterization and experimental investigation of rotor wake and sling load interaction. In Journal of Physics: Conference Series - 25th Italian Association of Laser Velocimetry Annual Meeting, A.I.VE.LA. 2017 (pp.012012). DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND : IOP PUBLISHING LTD [10.1088/1742-6596/1110/1/012012].
Four blades rotor model aerodynamic characterization and experimental investigation of rotor wake and sling load interaction
Camussi R.
2018-01-01
Abstract
An experimental study has been carried at the Aerodynamic Measurement Methodology laboratory of CIRA (Centro Italiano Ricerche Aerospaziali). The scope of the investigation was the characterization of the loads and of the wake behaviour of a scaled rotor test rig simulating a drop test. A 3D circular cylinder was selected as representative of a typical sling load, the experimental set up having been carefully designed also with the aid of FEM analyses. The overall performances of the scaled rotor have been retrieved by the measure of its Figure of Merit and several measurements have been performed to characterize the wake and the pressure load upon the cylindrical body. The wake flow has been carefully analysed by PIV measurements and a tracking algorithm has been implemented to identify and characterize the tip vortices. The overall properties of the wake have been retrieved and a qualitative description of the tip vortices evolution and of their properties is proposed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
