Landing Gear/Soil Interaction Development of Criteria for Aircraft Operation on Soil During Turning and Multipass Operations
Landing Gear/Soil Interaction Development of Criteria for Aircraft Operation on Soil During Turning and Multipass Operations
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发表时间：
1975-10
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通讯作者：
D. C. Kraft;N. S. Phillips
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文献类型：
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作者：
D. C. Kraft;N. S. Phillips
摘要：军用飞机在未经改进的跑道上运行的持续设计和运行要求导致需要研究最显著影响性能的起落架/土壤跑道参数。本报告总结了在两年的研究工作的第二年完成的那些活动，这些研究工作涉及转向、高速操作和多道操作标准的制定。所报告的工作是在几个领域进行的。对转弯轮胎试验数据进行了全面分析，并将预测方程纳入转弯程序。针对三种类型的车辆进行有限参数研究，计算车轮力比随跑道宽度的变化规律。在陆军工程兵水道实验站进行了多通道测试程序，以测量滚动和制动轮胎在交替路径中的响应。对数据进行了简化，并将车辙深度作为第一次通过响应以及随后的路径和制动的函数演变为预测方程。研究了有限的启动力数据，以确定启动阻力比的初步估计。开发了一个软胎/土计算机程序来研究粗糙度效应。
Abstract : The continuing design and operational requirements for military aircraft to operate on unimproved runways has led to the need to investigate those landing gear/soil runway parameters which most significantly influence performance. This report summarized those activities accomplished during the second year of a two-year research effort concerned with the development of criteria for turning, operation at high speed, and multipass operation. The work reported was conducted in several areas. The turned tire test data was completely analyzed and predictive equations incorporated into the turning program. A limited parametric study was conducted for three classes of vehicles to calculate wheel force ratios as functions of runway width required. A multipass test program was conducted at the Army Engineers Waterways Experiment Station to measure the response of rolling and braked tires in alternating paths. The data was reduced and predictive equations evolved from rut depths as a function of first pass response and subsequent path and braking. Limited start-up force data were examined to determine a preliminary estimate of start- up drag ratios. A soft tire/soil computer program was developed to study roughness effects.