舰载直升机理论风限图飞行模拟获取方法

Flight Simulation Approach for Obtaining Candidate Flight Envelope of Shipboard Helicopter

摘要:

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°和 5kn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:

It is very difficult to obtain practical wind over deck envelops of the shipboard helicopters, relying only on actualflight tests or modeling and simulation. Obtaining the candidate flight envelope through the launching and landing flightsimulation test, combined with a small number of seaborne flight verification tests, is a comprehensive and superior meth?od. The flight simulation test requires the participation of a real pilot and a high-level flight simulator. The airflow field da?ta and the movement of the carrier can be obtained from the modeling simulation or experimental testing, and the unsteadycharacteristics of airflaw field of the carrier must be considered. Only when the visual or visual feedback of the pilot is lim?ited (such as visibility reduction), the six-degree-of-freedom movement of the simulator base was necessary. Landing diffi?culty is judged by the pilot’s control burden quantified with DIPES or Bedford method, and by the recorded control data.The typical flight simulation test procedure include 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 theoreticalwind of deck envelop was obtained to guide the following flight test on the sea, and to improve the efficiency and safety ofthe flight test on the sea. The wind over deck envelop which can be used in practice is obtained after the actual flight verifi?cation test at sea was effectively and safely guided by the candidate flight envelope.