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首页> 外文会议>AHS 59th Annual Forum Proceedings Vol.1 May 6-8, 2003 Phoenix, Arizona >Piloted Evaluation of Modernized Limited Authority Control Laws in the NASA-Ames Vertical Motion Simulator (VMS)
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Piloted Evaluation of Modernized Limited Authority Control Laws in the NASA-Ames Vertical Motion Simulator (VMS)

机译：在NASA-Ames垂直运动模拟器（VMS）中对现代化的有限权限控制法进行先导评估

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The UH-60 BLACK HAWK was designed in the 1970s, when the US Army primarily operated during the day in good visual conditions. Subsequently, the introduction of night-vision goggles increased the BLACK HAWK's mission effectiveness, but the accident rate also increased. The increased accident rate is strongly tied to increased pilot workload as a result of a degradation in visual cues. Over twenty years of research in helicopter flight control and handling qualities has shown that these degraded handling qualities can be recovered by modifying the response type of the helicopter in low speed flight. Sikorsky Aircraft Corporation initiated a project under the National Rotorcraft Technology Center (NRTC) to develop modern flight control laws while utilizing the existing partial-authority Stability Augmentation System (SAS) of the BLACK HAWK. This effort resulted in a set of Modernized Control Laws (MCLAWS) that incorporate rate command and attitude command response types. Sikorsky and the US Army Aeroflightdynamics Directorate (AFDD) conducted a piloted simulation on the NASA-Ames Vertical Motion Simulator, to assess potential handling qualities and to reduce the risk of subsequent implementation and flight test of these modern control laws on AFDD's EH-60L helicopter. The simulation showed that Attitude Command Attitude Hold control laws in pitch and roll improve handling qualities in the low speed flight regime. These improvements are consistent across a range of mission task elements and for both good and degraded visual environments. The MCLAWS perform better than the baseline UH-60A control laws in the presence of wind and turbulence. Finally, while the improved handling qualities in the pitch and roll axis allow the pilot to pay more attention to the vertical axis and hence altitude performance also improves, it is clear from pilot comments and altitude excursions that the addition of an Altitude Hold function would further reduce workload and improve overall handling qualities of the aircraft.
机译：UH-60 BLACK HAWK是在1970年代设计的，当时美国陆军主要在白天在良好的视觉条件下行动。随后，引入夜视镜提高了BLACK HAWK的任务效率，但事故率也有所提高。由于视觉提示的降低，事故率的增加与飞行员工作量的增加密切相关。二十多年来对直升机飞行控制和操纵质量的研究表明，可以通过修改低速飞行中直升机的响应类型来恢复这些降级的操纵质量。西科斯基飞机公司在国家旋翼飞机技术中心（NRTC）的支持下启动了一个项目，以开发现代飞行控制法律，同时利用BLACK HAWK现有的部分授权稳定性增强系统（SAS）。这项工作导致了一套现代化的控制法则（MCLAWS），其中融合了速率命令和姿态命令的响应类型。西科斯基和美国陆军航空航天动力局（AFDD）在NASA-Ames垂直运动模拟器上进行了试点模拟，以评估潜在的操纵质量，并降低随后在AFDD的EH-60L直升机上实施和执行这些现代控制法规的风险。仿真表明，俯仰和横滚中的“姿态命令姿态保持”控制定律提高了低速飞行状态下的操纵质量。这些改进在一系列任务任务元素以及良好和退化的视觉环境中都是一致的。在存在风和湍流的情况下，MCLAWS的性能优于基准UH-60A控制律。最后，虽然俯仰和横滚轴上改进的操纵质量使飞行员可以更加注意垂直轴，因此海拔性能也得到了改善，但从飞行员的评论和海拔偏移中可以明显看出，增加“海拔保持”功能将进一步减少工作量并提高飞机的整体处理质量。

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