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用一个翼伞将分离舱飘回地球。A parafoil is deployed to fly the pod back to earth.

研究结果对翼伞回收系统的设计和试验有参考价值。The conclusion of simulation studies is useful to parafoil system designs and experiment.

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文章介绍可控翼伞飞行控制程序的设计。In this paper, the design of controllable parafoil flight control algorithm is introduced.

软件则包括“地面测控软件”和“伞上控制软件”两部分。The software includes ground monitoring and controlling software and parafoil control software.

阐述了翼伞系统归航轨迹最优控制的建模。In this paper, the modeling of optimal control in parafoil homing trajectory is discussed in detail.

归航轨迹的设计和优化对实现翼伞系统的精确空投至关重要。Design and optimization of homing trajectory is essential for accurate aerial delivery of parafoil system.

这些研究工作对翼伞系统的设计、工作过程的分析等提供了参考和理论依据。All those studies would be references and theoretical bases to design and working-process analyses of parafoil system.

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该文可为进一步研究更多不同几何参数的翼伞模型提供参考。This paper can provide reference for further studies on parafoil aerodynamic performance with different geometric parameters.

文中应用分歧与突变理论法建立了翼伞系统飞行稳定性分析的方法。The bifurcation analysis and catastrophe theory methodology is used here t?find ways to analyze the stability of parafoil system.

扼要地介绍了近年来我国航天科技工作者在翼伞回收系统运动仿真研究方面所做的工作。This paper summarizes the advances in simulation studies of the gliding, turning and flare manoeuvre performance of parafoil system in recent years.

从六自由度动力学仿真结果入手，分析了翼伞系统飞行的基本特性，在此基础上进一步简化了模型。Firstly, based on six degree-of-freedom kinetic modeling and simulating, the basic flight characters of parafoil system and predigest the model are analyzed.

该文介绍美国空间站救生艇—升力体的要求，飞行试验计划、发射方法、结构和着陆系统。The requirements, flight test plan, launch options, parafoil landing system and configurations on the lifeboat of lifting body for the international space station are de scribed.

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本文建立了可控翼伞气动力计算的等效翼型—柔性模型以及雀降操纵力计算的双体铰接模型。In this paper, the "equivalent airfoil flexible model" for the aerodynamic calculation and the "two body hinged model" for the flare control force calculation of a parafoil is established.

研究结果表明，在转弯操纵时冀伞系统的两体间存在明显相对运动，但采用多点交叉连接可以使这种相对运动得到有效的抑制。The results indicate that there is obvious relative motion in turning control of parafoil system, and crossover connection through multi-point can effectively restrain the relative motion.

为了实现翼伞系统的准确、安全着陆，根据翼伞系统自身的可操纵性和基本运动特性，采用经典分段归航策略。In order to realize accurate and safe landing of parafoil system, classic multiphase homing trajectory was adopted according to the maneuverability and basic flight characters of the parafoil itself.