Airworthiness noise meteorological measurement and airworthiness compliance verification
In the flight test measurements of civil aircraft noise airworthiness certification,the influ-ence of meteorology is crucial to the final test results.In order to ensure that applicants correctly mea-sure meteorological parameters,correct noise data for meteorological effects and obtain accurate test re-sults,technical index requirements was put forward for test equipment used by ground weather stations,vehicle-mounted weather stations and meteorological aircraft.The review guidance requirements were given for measurement methods,test flight methods,data validity,etc.The atmospheric stratification method and the quadratic interpolation method of the atmospheric sound attenuation coefficient used to correct the noise measurement data were proposed,analyzed,and verified.In the process of noise air-worthiness measurement data correction,the noise results can meet the baseline conditions and airwor-thiness requirements by calculating the atmospheric sound attenuation coefficient and correcting the measurement data.The meteorological data test flight,measurement,analysis,and data correction meth-ods proposed improve the accuracy and reliability of the final noise results and ensure the comparabili-ty and reliability of noise test results under different meteorological conditions.
万方数据
维普
