舰载直升机理论风限图飞行模拟获取方法研宄

Flight simulation test technology for obtaining candidate flight envelope of naval helicopter

摘要:

为获取舰载直升机实用风限图，仅依靠实装飞行试验或建模仿真都是非常困难的。通过起降飞行模拟试验获取理论风限图，结合少量的海上实装飞行验证试验是一种综合较优的方法。起降飞行模拟试验需要真实飞行员和高等级飞行模拟器参与，飞行模拟器中的母舰气流场数据、母舰运动可由建模仿真或试验测试得到，且必须考虑母舰气流场的非定场特性；只有当飞行员视景或视觉反馈受限时（如能见度降低时），飞行模拟器基座的六自由度运动才是必需的；用DIPES或Bedford方法量化飞行员主观操纵负担，结合记录的客观操纵数据，评判起降难度；典型的飞行模拟试验程序包含了不同风况下的进近和甲板着舰，通常每隔15度和5节一个风况。通过起降飞行模拟试验得到的理论风限图，可以更加有效和安全地指导海上实装飞行验证试验，最终获得实用风限图。

Abstract:

In order to obtain the practical wind of deck envelop of the shipboard helicopter, it is very difficult to rely only on the actual flight test or modeling and simulation. Obtaining the candidate flight envelope through the launching and landing flight simulation test, combined with a small number of seaborne flight verification tests, is a comprehensive and superior method. The flight simulation test was carried out by the pilot based on the flight simulator, in which the unsteady air flow data and the movement of the carrier can be obtained from the modeling simulation or test; only when the visual or visual feedback of the pilot is limited (such as when the visibility is reduced), the six degree of freedom movement of the simulator base is necessary. Landing difficulty was judged by the pilot's control burden quantified by DIPES or Bedford method，and by the recorded control data. The typical flight simulation test procedure included the approach and flight deck landing under different wind conditions, usually every 15 degrees and 5 knots. By carrying out the flight simulation test, the law was explored, and the theoretical wind of deck envelop was obtained to guide the following flight test on the sea, and to improve the efficiency and safety of the flight test on the sea. The wind of deck envelop which can be used in practice was obtained after the candidate flight envelope was verified of by the flight test on the sea.