Comprehensive assessment methods for helicopter vibration and noise

In order to do a comprehensive study on vibration and noise of helicopters, a model of comprehensive assessment based on pilot, machine equipment and environment was built here to analyze the main influence factors on helicopter vibration and noise and constructs a three-layer index system structure was contructed. The model constructed was assessed with the analytic hierarchy process method and the fuzzy comprehensive evaluation method after studying various comprehensive evaluation methods. At the same time, the simulation for the new methods was done with MATLAB development platform. At last, some examples of helicopters were chosen to do case study with the proposed method. The simulation results showed that the method proposed can describe the effects of helicopter vibration and noise on pilot, equipment and environment qualitatively and quantitatively. The results provided a new way for the assessment of helicopter vibration and noise, this method could be applied and extended in development, testing and use of helicopters.