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EXPLORING THE EFFECTS OF ROTOR DESIGN PARAMETERS ON HELICOPTER HANDLING QUALITIES

机译：探索转子设计参数对直升机操作质量的影响

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This research aims to bring HQ’s (Handling Qualities) assessment according to ADS-33E-PRF into earlyrnstages of helicopter design process, namely late conceptual and early preliminary design phase. Effects ofrnthree rotor design parameters, namely disc loading, rotor tip speed and blade loading coefficient, onrnbandwidth phase delay criterion of the ADS-33E-PRF for pitch channel is investigated for the hover conditionrnflown by a 10 degrees of freedom Bo-105 like simulation model. After setting practical design constraints, thernvariation of each design parameter has been plotted in bandwidth-phase delay graphs. The results indicaternthat disc loading eventuated as the “grouping” parameter, forming isoline maps for tip speed and bladernloading coefficient. Furthermore, the different sets of disc loading isoline maps generate a curved non-linearrnpattern, inherently with a three dimensional translation. High disc loading with high tip speed and low bladernloading coefficient configuration resulted in Level 1 handling qualities. Low disc loading cases provide a widernspectrum of phase delay values with a small interval of possible bandwidth, visa versa for high disc loadingrncase. The paper provides an insight into the design space available in means of bandwidth-phase delayrnanalysis in hovering flight.
机译：这项研究旨在将根据ADS-33E-PRF进行的HQ（操作质量）评估纳入直升机设计过程的早期阶段，即后期概念设计和早期初步设计阶段。通过10自由度Bo-105相似的仿真模型，研究了ADS-33E-PRF螺距通道的三个转子设计参数，即圆盘载荷，转子叶尖速度和叶片载荷系数，on-width相位延迟准则对螺距通道的影响。 。在设置了实际的设计约束后，每个设计参数的变化已绘制在带宽相位延迟图中。结果表明，圆盘加载最终成为“分组”参数，从而形成了等高线图，表示叶尖速度和刀片加载系数。此外，不同的盘片加载等值线图集会生成弯曲的非线性图形，固有地具有三维平移。具有高叶尖速度的高圆盘负载和较低的刀刃负载系数配置导致了1级处理质量。低光盘加载情况提供了更宽的相位延迟值频谱，并具有较小的可能带宽间隔，反之亦然，高光盘加载情况则相反。本文提供了对悬停飞行中带宽相位延迟分析的可用设计空间的见解。

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