查询词典 parafoil

In this thesis, the problems, related with research of automatic and precise homing of parafoil system, were analyzed thoroughly and systematically in method of theoretical analysis and numerical simulation, including dynamics, trajectory design and trajectory following.

本文以&实现翼伞系统自主、准确归航&为中心，采用理论分析与数值仿真相结合的方法，对翼伞系统动力学、航迹规划和跟踪控制问题进行了比较系统深入的研究，得到了若干有意义的结论。

Domina Jalbert designed the parafoil. His concepts have been adapted for parachutes and kites.

Domina Jalbert设计了伞翼，随后这一概念也被使用在降落伞和风筝里

And the error variable was solved analytically making use of"Project Point". Then the traditional PD controller and gain-scheduling fuzzy PD controller were designed to realize path following of parafoil system.

同时，基于翼伞系统基本运动特性，提出了一系列有针对性的控制策略，其中重要的一条是，将平均风的影响在轨迹归航中修正，而大气紊流的影响作为干扰由控制器来补偿。

Some valuable conclusions were drawn and shown as following: Three models were brought forward, i.e. 6DOF rigid-connected model, 8DOF rigid-jointed model and 12DOF non-rigid connected model. The basic dynamic properties of the system, the relative motion between parafoil and payload, and some geometric parameters'effects on the system dynamics were analyzed and summarized.

分别建立六自由度刚性连接模型、八自由度刚性铰接模型和十二自由度非刚性连接模型，着重分析了系统的基本运动特性、回收物-伞体间的相对运动特性，以及主要设计参数对系统性能的影响；并将不同复杂程度的模型进行对比，分析了各种模型的特点和适用范围。

Parafoil;airdrop;control rope;position prediction

翼伞；空投；操纵绳；位置解算

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。