Abstract
This paper presents the key objectives from an European Union funded collaborative project investigating the noise installation effects for novel regional advanced aircraft concepts using Open Rotor (OR) propulsion systems. The consortium for the project:WENEMOR, will address the topic by carrying out aero-acoustic measurements in the open test section of a large low speed wind tunnel using a complete reduced scale modular model of different configurations of an aircraft with installed counter rotating open rotor systems operating in both pusher and tractor modes. The principal goal of the project is to assess experimentally the noise shielding effectiveness of classic airframe components for different Open Rotor aircraft configurations. A complete 1/7 scale aircraft has been designed and built for installation in the Pininfarina Aerodynamic and Aeroacoustic Research Center Wind Tunnel. The model has two Open Rotors with a contra-rotating fan at the same scale as the airframe. Various positions of the ORs with respect to the airframe will be tested with noise measurements being performed both in the near and the far field. The test campaign will provide, for the first time in Europe, a comprehensive database on noise installation effects for novel regional advanced aircraft concepts using OR propulsion systems. Two accompanying conference papers present preliminary results.
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