The effect of using N1% as input for aircraft noise modelling

IF 7.3 1区工程技术 Q1 ENVIRONMENTAL STUDIES

Transportation Research Part D-transport and Environment Pub Date : 2025-03-20 DOI:10.1016/j.trd.2025.104710

Rebekka C. van der Grift, Mirjam Snellen, Alireza Amiri-Simkooei

引用次数: 0

Abstract

For models that evaluate aircraft noise, thrust is an essential input. From aircraft flight recorder data or measured noise spectra, the engine’s rotational speed can be estimated for which a conversion is then needed to obtain the engine’s thrust. This research investigates three conversion methods. The first uses the expressions from the ANP database while the second method is based on the fuel flow. The third employs Gas Turbine Simulation Program (GSP) predictions. The thrust estimates are compared to airline performance calculations where significant variations up to 3 dBA in predicted noise were found. Methods one and three were found to be in good agreement with the performance data. An important finding of this paper is that combining methods one and three using least-squares is capable of providing the required conversion expressions, in line with those in the ANP database, but without being limited to a few aircraft types only.

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使用n1作为飞机噪音模型输入的效果

对于评估飞机噪声的模型，推力是一个重要的输入。从飞机飞行记录仪的数据或测量的噪声谱中，可以估计出发动机的转速，然后需要进行转换以获得发动机的推力。本研究考察了三种转换方法。第一种方法使用来自ANP数据库的表达式，而第二种方法基于燃料流量。第三种采用燃气轮机模拟程序（GSP）预测。推力估计与航空公司的性能计算进行了比较，其中发现预测噪声的显著变化高达3 dBA。方法一和方法三与性能数据吻合较好。本文的一个重要发现是，使用最小二乘将方法一和方法三结合起来，能够提供所需的转换表达式，与ANP数据库中的表达式一致，但不限于少数飞机类型。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Transportation Research Part D-transport and Environment 工程技术-运输科技

CiteScore

14.40

自引率

9.20%

发文量

314

审稿时长

39 days

期刊介绍： Transportation Research Part D: Transport and Environment focuses on original research exploring the environmental impacts of transportation, policy responses to these impacts, and their implications for transportation system design, planning, and management. The journal comprehensively covers the interaction between transportation and the environment, ranging from local effects on specific geographical areas to global implications such as natural resource depletion and atmospheric pollution. We welcome research papers across all transportation modes, including maritime, air, and land transportation, assessing their environmental impacts broadly. Papers addressing both mobile aspects and transportation infrastructure are considered. The journal prioritizes empirical findings and policy responses of regulatory, planning, technical, or fiscal nature. Articles are policy-driven, accessible, and applicable to readers from diverse disciplines, emphasizing relevance and practicality. We encourage interdisciplinary submissions and welcome contributions from economically developing and advanced countries alike, reflecting our international orientation.