先进的小发动机涡轮的流量小，叶片短，展弦比低，二次损失及叶尖漏泄损失大，效率低，温度高冷效差。
The advanced small gasturbines feature small mass flow ratio, short vanes and blades with low aspect, high second flow and blade tip leakage losses, and low efficiency.
采用多流管模型分析了H型垂直风力机展弦比和实度对其功率系数的影响，并对叶片旋转过程中攻角随尖速比的变化进行了分析。
The influence of solidity and aspect ratio on power coefficient of H-type vertical axis wind turbine, and the change of attack Angle with tip speed ratio were analyzed.
在原直叶片与三维风扇叶片的基础上，通过编程设计手段改变其设计参数，使得叶片的展弦比，最大相对厚度与稠度等参数发生改变。
Based on the straight cascade and the fan cascade, the design parameter of aspect ratio, maximum relative thickness and solidity were remodeled by programmed design method.
因此在高压导叶设计中 ，当采用低展弦比叶片时 ，应注意削弱叶片出口附近流场的严重径向窜流。
Therefore when using low aspect ratio blade during the design of high pressure guide vane, attention should be made in order to obstruct the …
因此在高压导叶设计中 ，当采用低展弦比叶片时 ，应注意削弱叶片出口附近流场的严重径向窜流。
Therefore when using low aspect ratio blade during the design of high pressure guide vane, attention should be made in order to obstruct the …
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