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Evaluation of Structural Integrity of Transport Aircraft Based on Flight Data

机译:基于飞行数据的运输机结构完整性评估

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摘要

To emphasize the importance of monitoring the structural integrity of aging aircraft, some accidents involving structural failure in flight are reviewed in this paper. Since the nondestructive inspection techniques are time-consuming, as a complementary monitoring method it is proposed to utilize the digital flight data for this purpose. A theory in static aeroelasticity is reviewed in this paper. Aerodynamic models of normal force and pitching moment coefficients are established through fuzzy logic modeling of the flight data. Stability and control derivatives with aeroelastic effects are then calculated by using these aerodynamic models to indirectly predict possible problems in the wing structure as well as the empennage structure. Three examples, one involving a newer twin-engine passenger jet transport, and the other two for four-engine old passenger jet transport airplanes, are presented in this paper.
机译:为了强调监视老化飞机的结构完整性的重要性,本文回顾了一些涉及飞行中结构故障的事故。由于无损检查技术很耗时,因此,作为一种补充的监视方法,建议为此目的利用数字飞行数据。本文综述了静态气动弹性理论。通过飞行数据的模糊逻辑建模,建立了法向力和俯仰力矩系数的空气动力学模型。然后,通过使用这些空气动力学模型间接预测机翼结构和尾翼结构中可能存在的问题,可以计算出具有气动弹性效应的稳定性和控制导数。本文介绍了三个示例,其中一个涉及新型双引擎客机运输,另外两个涉及四引擎旧式客机运输飞机。

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