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首页> 外文期刊>Journal of the American Helicopter Society >Technical Note Performance of a Sikorsky 8-61 with a New Main Rotor
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Technical Note Performance of a Sikorsky 8-61 with a New Main Rotor

机译：具有新主旋翼的Sikorsky 8-61技术说明

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摘要

New composite main rotor blades for the Sikorsky S-61 have been designed, constructed and flight tested. Design criteria are described and the geometry of the new blade is shown. Results of an extensive flight test program conducted to obtain a Supplementary Type Certificate from the FAA for these blades are presented. The flight test program included an investigation of the performance and stability and control characteristics, and measurement of the structural loads. The flight test program was conducted with the aircraft as currently equipped with metal blades and the aircraft with new composite blades, so that direct load comparisons could be made. The flight test data show that the new blades provide a considerable increase in the hover lift capability and a significant improvement in level flight performance. Critical oscillatory control loads with the new blades are shown to have amplitudes lower than those of the aircraft with metal blades and the vibration characteristics of the aircraft are not appreciably changed by the new blades. Pilot comments indicate that the handling characteristics of the aircraft are improved with the new blades.
机译：西科斯基S-61的新型复合主旋翼已经过设计，制造和飞行测试。描述了设计标准，并显示了新刀片的几何形状。介绍了为从美国联邦航空局获得这些叶片的补充型号合格证而进行的广泛飞行测试计划的结果。飞行测试程序包括对性能，稳定性和控制特性的调查，以及对结构载荷的测量。飞行测试程序是针对目前配备金属叶片的飞机和配备新复合材料叶片的飞机进行的，因此可以进行直接载荷比较。飞行测试数据显示，新叶片在悬停提升能力方面有显着提高，在水平飞行性能方面也有显着改善。示出了使用新叶片的临界振荡控制负载的振幅低于具有金属叶片的飞机的振幅，并且新叶片不会明显改变飞机的振动特性。飞行员评论表明，新叶片可改善飞机的操纵性能。

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