适航噪声气象测量和适航符合性验证

Airworthiness noise meteorological measurement and airworthiness compliance verification

在民机噪声适航审定试飞测量中,气象的影响对最终的测试结果影响至关重要。为保证申请人正确地测量气象参数,对噪声数据进行气象影响修正并获得准确的试验结果,对使用地面气象站、车载气象站和气象飞机搭载的测试设备提出技术指标要求,针对测量方法、试飞方法及数据有效性等内容给出审查指导要求,提出用于修正噪声测量数据的大气分层方法、大气声衰减系数二次插值方法,并进行分析验证。在噪声适航测量数据修正过程中,通过计算大气声衰减系数和修正测量数据,使得噪声结果能够符合基准条件,并满足适航要求。研究表明,提出的气象数据试飞、测量、分析和数据修正方法提高了最终噪声结果的准确性和可靠性,可以确保在不同气象条件下进行的噪声测试结果具有可比性和可靠性。

In the flight test measurements of civil aircraft noise airworthiness certification,the influence of meteorology is crucial to the final test results.In order to ensure that applicants correctly measure meteorological parameters,correct noise data for meteorological effects and obtain accurate test results,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 airworthiness measurement data correction,the noise results can meet the baseline conditions and airworthiness 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 comparability and reliability of noise test results under different meteorological conditions.