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Dynamical possibilities to design Earth-to-Moon transfers in the patched three-body approximation

机译:以三体贴近法设计地对月转移的动力学可能性

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This paper concerns Earth-to-Moon transfers in the patched three-body approximation, in which the Sun-Earth-Moon-Spacecraft system is modeled by two coupled Restricted Three-Body Problems. The standard transfers in this approach are manifold guided solutions, connecting transit and non-transit orbits of each three-body system. These are low-energy solutions but require long transfer time, usually more than 100 days. We present alternative solutions in the Sun-Earth portion of the transfer that reduce total transfer time to about 10 days, while still providing lunar ballistic capture at arrival. Instead of connecting transit and non-transit orbits, these alternative transfer solutions connect a bi-parametric family of quasi-periodic orbits around the Earth in the Sun-Earth system with transit orbits of the Earth-Moon system. We investigate coupling possibilities in view of the Jacobi constant of the three-body systems and illustrate the alternative patching solutions. Due to the quasi-periodic nature of the orbits in the first part of the transfer, these alternative solutions provide new dynamical possibilities in the patched three-body approximation, even when the hyperbolic invariant manifolds of the coupled three-body systems do not intersect properly.
机译:本文涉及以三体近似的补丁修正的地对月转移,其中太阳-地球-月球-航天器系统是通过两个耦合的受限三体问题建模的。这种方法的标准传输是多管引导解决方案,将每个三体系统的过境和非过境轨道连接起来。这些是低能耗解决方案,但需要较长的传输时间,通常超过100天。我们在转移的太阳地球部分提供了替代解决方案,可将转移的总时间减少到大约10天,同时仍可在到达时提供月球弹道捕获。这些替代的转移解决方案没有连接过渡轨道和非过渡轨道,而是将日地系统中围绕地球的准周期轨道的双参数族与月球系统的过渡轨道联系在一起。我们根据三体系统的Jacobi常数研究耦合的可能性,并说明替代的修补解决方案。由于转移的第一部分轨道的准周期性质,即使在耦合的三体系统的双曲不变流形没有正确相交的情况下,这些替代解决方案也可以在修补的三体近似中提供新的动力学可能性。 。

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