| 1. | Shipbuilding . shaft lines . forward glands for propeller hups
造船工业.轴线.螺旋桨桨毂的前封严压盖 |
| 2. | Small craft with inboard engine - propeller shaft ends and bosses with 1 : 16taper
舷内机小艇锥度为1 : 16的螺旋桨轴端和桨毂 |
| 3. | Small craft with inboard engine - propeller shaft ends and bosses with 1 : 10 taper
舷内机小艇锥度为1 : 10的螺旋桨轴端和桨毂 |
| 4. | Propeller hubs . locknuts
桨毂.紧固螺母 |
| 5. | Propeller hubs . front cones
桨毂.前锥 |
| 6. | Propeller hubs . rear cones
桨毂.尾锥 |
| 7. | The surface of propeller , hub and the vortex of blade is discreted by a number of small hyperboloidal quadrilateral panels with constant source and doublet distribution
桨叶、桨毂表面和螺旋桨尾涡面采用四边形双曲面元离散，以消除面元间的间隙。 |
| 8. | This thesis , which is devoted to the research on the smart rotor with actively controlled trailing - edge flap for hub oscillatory load reduction , offers a potential approach for the vibration reduction of helicopter
本文对带有主动控制后缘附翼的智能旋翼用于降低桨毂交变载荷进行探索性的研究，为降低直升机飞行中机体振动水平提供一条有效的新途径。 |
| 9. | Because of the periodicity of the hub oscillatory load and the nonlinearity of the i / o relationship of the smart rotor , the neural control methods with both off - line and on - line modeling in frequency domain on the smart rotor and their realization procedures are presented
飞行中直升机的桨毂交变载荷以周期性的为主，而智能旋翼的输入输出关系具有非线性特征。据此，本文提出离线建模的和在线建模的智能旋翼频域神经控制方法，并给出实现的具体方案细节。 |
| 10. | Among others , one method to solve this problem is to install lead - lag dampers . the conventional configuration for installing dampers is to put them between blades and hub . in 1990s , eurocopter began to use the inter - blade dampers in ec155 which means to put every damper between two adjacent blades
传统的减摆器布置是桨叶-桨毂式;上个世纪90年代,欧直公司开始在ec155上使用叶间减摆器,减摆器不是布置在桨叶和桨毂之间,而是布置在相邻两片桨叶之间。 |
