Flight path optimization is designed for minimizing environmental impacts of aircraft around airports during approaches. The main objective of this paper is to develop a model of optimal flight paths taking into account jet noise, fuel consumption, constraints and extreme operational limits of the aircraft in approach. A two-segment approach is obtained as an optimal trajectory. Aircraft alignment on the runway axis with a slope of 3° during the last approach segment is observed and the descent rate is about 1060 ft/mn. This particularly characterizes the continuous descent approach having the potential to reduce noise emission by −4 dB and fuel consumption by −20 % to −10 % during the approach. Measurements of aircraft noise were carried out around Saint-Exupry Lyon International Airport for one year. Because of the suggested trajectory, optimized noise levels are less than the measured and INM values. Optimal trajectory consumes less than the standard trajectory; it can be integrated in the aircraft FMS and used in the autopilot system. This is one of the promising objectives of this research.
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机译：优化飞行路线旨在将进近过程中飞机在机场周围的环境影响降至最低。本文的主要目的是在考虑进近飞机的喷气噪声，燃油消耗，约束和极端运行极限的情况下，开发一种最佳飞行路径的模型。获得了两段方法作为最佳轨迹。在最后进近航段期间，飞机以3°的倾斜度在跑道轴线上对齐，下降速度约为1060 ft / mn。这尤其具有连续下降方法的特征，该方法具有在该方法中将噪音排放降低-4 dB和将燃油消耗降低-20％至-10％的潜力。飞机噪音的测量在里昂圣艾修伯里国际机场附近进行了一年。由于建议的轨迹，优化的噪声水平小于实测值和INM值。最佳轨迹的消耗少于标准轨迹；它可以集成在飞机FMS中并用于自动驾驶系统。这是这项研究的有希望的目标之一。
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