The Cabin Noise Analysis Of Propeller Plane

At present, the propeller plane has become more and more popular for its good performance in low-velocity and low-altitude. Besides these advantages, the high level of cabin noise has severely impacted the riding comfort. So finding the solution of noise reduction is the main part to design these aircraft.This paper focus on the analysis of the cabin noise of propeller plane. First, build the CFD model with reference to Y-12 propeller plane. analysis the aerodynamic(Force and Torque) with the results from steady calculation by Fluent. then, use Harmonious method to compute the rotation noise of the propeller. and the sound pressure level of a far-field point,compare the result with empirical formula to verify the result. build the structure and sound finite element model by Hypermesh and having analysis of the structure and sound modal, compare the results with data to verify the result. finally, import the sound pressure of fuselage, structure and sound modal into the Virtual Lab, then, have a modal based vibro-acoustic response analysis, research the character of the cabin noise distribution. It proved that the noise assumes the trends of attenuation from front to the back, the sound pressure level is smaller than the body side?...