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Analysis of Vehicle Class Contributions to Total DNL Response

机译：车辆类别对总DNL响应的贡献分析

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摘要

Aviation operations are projected to increase, potentially resulting in increased environmental impacts with respect to fuel burn, NO, emissions, and community noise. A number of programs are involved in identifying technological advances required to mitigate these environmental impacts. These technologies must be analyzed at the vehicle-level, but also at the fleet-level to predict the expected impact in the face of increasing operations. Airport community noise is particularly difficult to model due to the spatial and temporal nature of noise, resulting in a reduced understanding of the fleet-level impacts that are possible as a result of certain aircraft-level changes. The objective of this research is to analyze the contribution to the total DNL response at several airport types. By utilizing a generic framework to intelligently reduce aircraft and airport diversity, contributions of aircraft types at different airport types can be reported. Results included spatial analysis of noise contributions, concluding that the largest contributors affect the lateral regions of a noise contour, while a greater number of vehicle classes impact the noise near the ground track. Results demonstrate that there is some variation in the greatest contributors by airport type. The Large Twin-Aisle and the Very Large Aircraft classes contributions are generally not significant to the airport noise response. Two notional technology infusion scenarios were examined for an approximate time-frame of 2030. The results show that Large Single-Aisle aircraft dominate the total noise response in this forecast year.
机译：航空运营预计将增加，有可能导致对燃料燃烧，NO，排放和社区噪音的环境影响增加。许多程序涉及确定减轻这些环境影响所需的技术进步。这些技术必须在车辆级别进行分析，还必须在车队级别进行分析，以预测面对日益增长的运营所产生的预期影响。由于噪声的时空特性，机场社区噪声尤其难以建模，导致对机队级别的影响的了解有所减少，而某些飞机级别的变化可能会影响机队级别的影响。这项研究的目的是分析几种类型的机场对总DNL响应的贡献。通过利用通用框架智能地减少飞机和机场的多样性，可以报告不同机场类型的飞机类型的贡献。结果包括对噪声贡献的空间分析，得出的结论是，最大贡献者会影响噪声轮廓的横向区域，而更多种类的车辆会影响地面轨道附近的噪声。结果表明，不同机场类型的最大贡献者之间存在差异。大型双通道飞机和超大型飞机类的贡献通常对机场的噪声响应影响不大。在大约2030年的时间范围内，研究了两种概念性技术注入情景。结果表明，在这一预测年度，大型单通道飞机在总噪声响应中占主导地位。

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  • 会议地点 Atlanta GA(US)
  • 作者

    Jose E. Bernardo; Olivier Kiehl; Michelle R. Kirby; Dimitri Mavris;

  • 作者单位

    School of Aerospace Engineering, Georgia Institute of Technology, Atlanta, GA, 30332-0150;

    School of Aerospace Engineering, Georgia Institute of Technology, Atlanta, GA, 30332-0150;

    School of Aerospace Engineering, Georgia Institute of Technology, Atlanta, GA, 30332-0150;

    School of Aerospace Engineering, Georgia Institute of Technology, Atlanta, GA, 30332-0150;

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