新舟700涡桨类飞机噪声适航符合性方法研究
发布时间：2018-11-09 09:51
【摘要】：螺旋桨驱动的飞机以其“低速重载”,中短程经济型较为优秀的特性一直活跃在航空界。所有飞机在正式运营前都需要取得当局适航认证,包括了噪声符合性适航认证。研究涡轮螺旋桨驱动的飞机噪声适航符合性方法是必然也是趋势。本文对研发过程中的“新舟”-700系列飞机在内的涡桨类运输客机的噪声适航方法进行总结分析,对其噪声瞬时声压级,有效感觉噪声级等算法进行研究。采用基于静态测试预测噪声级的算法,分析发动机静态噪声数据,并利用一组涡桨飞机的静态噪声数据预测了其飞行噪声级。利用SPSS软件进行置信区间的计算,验证各项数据的符合性,在满足适航要求的前提下节省了运算时间。特别是在进行静态数据预测噪声适航符合性期间,首次引入飞机迎角优化的概念,并考虑到螺旋桨噪声的影响,使涡桨类飞机噪声适航符合性方法更加科学。在涡桨类飞机噪声适航符合性预测的方法基础之上,利用“新舟”-700的竞争机型庞巴迪DHC-8-400飞机已有的发动机静态测试噪声数据,使用C#语言和Visual Studio2013平台开发噪声适航符合性预测系统。其方法及竞争机型噪声数据可为今后上市的涡桨类运输飞机提供一定的噪声适航研发依据。
[Abstract]:Propeller-driven aircraft with its "low speed heavy load", short-range economy more excellent features have been active in the aviation industry. All aircraft are required to obtain authority airworthiness certification, including noise compliance certification. It is inevitable and trend to study the airworthiness method of aircraft noise driven by turbopropeller. In this paper, the noise airworthiness methods of propeller type airliner including Xinzhou-700 series aircraft are summarized and analyzed, and the algorithms of noise instantaneous sound pressure level and effective sense noise level are studied. An algorithm based on static test to predict noise level is used to analyze engine static noise data and a set of static noise data of propeller aircraft is used to predict the flight noise level. The confidence interval is calculated by using SPSS software to verify the conformance of the data and save the operation time on the premise of meeting the requirements of airworthiness. Especially in the period of static data prediction of noise airworthiness, the concept of aircraft angle of attack optimization is introduced for the first time, and considering the influence of propeller noise, the method of noise airworthiness of propeller aircraft is more scientific. Based on the prediction method of noise airworthiness of propeller aircraft, the static noise data of the engine of Bombardier DHC-8-400, a competing aircraft of Xinzhou-700, is used to test the noise data. C # language and Visual Studio2013 platform are used to develop noise airworthiness prediction system. The method and the noise data of the competitive aircraft model can provide a certain basis for the research and development of noise airworthiness for the future listed propeller type transport aircraft.
【学位授予单位】：中国民航大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：V221.91
本文编号：2320069
[Abstract]:Propeller-driven aircraft with its "low speed heavy load", short-range economy more excellent features have been active in the aviation industry. All aircraft are required to obtain authority airworthiness certification, including noise compliance certification. It is inevitable and trend to study the airworthiness method of aircraft noise driven by turbopropeller. In this paper, the noise airworthiness methods of propeller type airliner including Xinzhou-700 series aircraft are summarized and analyzed, and the algorithms of noise instantaneous sound pressure level and effective sense noise level are studied. An algorithm based on static test to predict noise level is used to analyze engine static noise data and a set of static noise data of propeller aircraft is used to predict the flight noise level. The confidence interval is calculated by using SPSS software to verify the conformance of the data and save the operation time on the premise of meeting the requirements of airworthiness. Especially in the period of static data prediction of noise airworthiness, the concept of aircraft angle of attack optimization is introduced for the first time, and considering the influence of propeller noise, the method of noise airworthiness of propeller aircraft is more scientific. Based on the prediction method of noise airworthiness of propeller aircraft, the static noise data of the engine of Bombardier DHC-8-400, a competing aircraft of Xinzhou-700, is used to test the noise data. C # language and Visual Studio2013 platform are used to develop noise airworthiness prediction system. The method and the noise data of the competitive aircraft model can provide a certain basis for the research and development of noise airworthiness for the future listed propeller type transport aircraft.
【学位授予单位】：中国民航大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：V221.91
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