Development and evaluation of noise measurement techniques in low- and high-speed wind tunnels

噪音会导致短期和长期的健康问题，如睡眠障碍、心血管影响、 听力受损，工作和学习成绩下降[1，2]。飞机内部和外部 噪音导致了这个问题。此外，与许多其他环境问题相比，噪音 由于总体上增加了对航空运输的使用，污染继续增加。许多国家都创造了 关于社区噪音的规定，特别是与航空运输有关的规定。拟议的研究将 支持低噪声和低噪声环境下飞机噪声测量技术的开发和表征 高速风洞，旨在验证和减少对广泛飞行试验的需要，并评估 新设计的降噪结构。庞巴迪航空航天公司和MSD航空公司都将 从当前项目的成果中获益。庞巴迪对最大限度地减少广泛的 以及为测量噪音和降低飞机噪音水平所需的昂贵飞行测试。MDS Aero对探索和最大限度地减少发动机测试单元内的噪音产生感兴趣，并在 特别是排气系统内部。卡尔顿大学拥有加拿大独一无二的高速风洞。 这个设施是这个项目的基础，提供高达超音速的气流速度。五花八门 结构和测量方法将在风洞中进行评估，结果将与 来自飞行测试、经验和数值预测的测量数据。这个项目的成果将是 通过减少所需的飞行测试次数，为庞巴迪和MDS Aero带来经济优势 通过改善测试设施环境。采用优化的面板设计将改善 受飞机噪音影响的普通民众的健康和福祉。 [1]W.Passchier-Vermeer和W.Passchier，“噪声暴露与公共健康”，环境健康 《观点》，108(1)：123-131,2000。 [2]“环境噪音造成的疾病负担”，世界卫生组织，2011年。

Noise can cause short- and long-term health problems, such as sleep disturbance, cardiovascular effects, hearing impairment, and decreased work and school performance [1,2]. Both aircraft internal and exterior noise contribute to this problem. Additionally, in contrast to many other environmental problems, noise pollution continues to grow, due to overall increased use of air transportation. Many countries have created regulations on community noise, and specifically related to air transportation. The proposed research will enable the development and characterization of aircraft noise measurement technologies in low- and high-speed wind tunnels, aiming at validating and reducing the need for extensive flight tests, and evaluating newly designed structures for noise reduction. Bombardier Aerospace and MSD Aero Corporation will both benefit from the results of the current project. Bombardier is interested in minimizing the number of extensive and expensive flight tests required for noise measurements, and in reducing the noise levels in aircraft. MDS Aero is interested in exploring and minimizing the noise generation inside their engine test cell, and in particular inside the exhaust system. Carleton University has a High-Speed Wind Tunnel, unique in Canada. This facility is fundamental for this project, providing air flow speeds up to supersonic airflow levels. Various structures and measurement methodologies will be assessed in the wind-tunnel, and results compared with measured data from flight tests, empirical and numerical predictions. The outcomes from this project will bring an economic advantage to Bombardier, by reducing the number of required flight tests, and MDS Aero through an improved testing facility environment. The adoption of the optimized panel designs will improve the health and well-being of the general population impacted by aircraft noise. [1] W. Passchier-Vermeer and W. Passchier, "Noise Exposure and Public Health", Environmental Health Perspectives, 108(1): 123-131, 2000. [2] "Burden of disease from environmental noise", World Health Organization, 2011.