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EFFECTS OF THE ATMOSPHERIC DRAG IN CLOSE APPROACHES FOR A CLOUD OF PARTICLES

机译:大气拖曳在颗粒物密闭方法中的作用

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The goal of this research is to study close approaches between a planet, which is assumed to have an atmosphere,and a cloud of particles. This cloud of particles is formed during the passage of a spacecraft by the atmosphere, dueto its explosion. The complete system is formed by two main bodies (the Sun and the planet), that are assumed tostay in circular orbits around their center of mass, and the spacecraft, that is then transformed in a cloud of particles.This spacecraft is moving under the gravitational attractions of the two main bodies when it makes a close approachwith the planet in such a position that it passes inside the atmosphere of the planet and then is transformed in a cloudof particles. The motion is assumed to be planar for the spacecraft and all the particles and the dynamics is given bythe well-known planar restricted circular three-body problem plus atmospheric drag. For the simulations shown herethe planet Jupiter is used as the body for the close approach, but the method works well for any planet. The initialconditions for the spacecraft and the particles of the cloud are specified at the periapsis, because it is assumed thatthe fragmentation of the spacecraft occurs at this point.
机译:这项研究的目的是研究假设有大气层的行星之间的接近方法, 和一团颗粒。这种粒子云是在航天器通过大气期间形成的,这是由于 爆炸。完整的系统由两个主体(太阳和行星)组成,它们被假定为 停留在围绕其质心的圆形轨道和航天器中,然后将其转换成粒子云。 当它靠近时,该航天器正在两个主体的引力吸引下移动。 行星处于这样一个位置,即它穿过行星大气内部,然后在云中转化 的粒子。假设航天器的运动是平面的,并且所有粒子和动力学由下式给出: 众所周知的平面约束圆形三体问题加上大气阻力。对于此处显示的模拟 木星被用作近距离进近的天体,但这种方法对任何行星都适用。最初的 在围手术期指定航天器和云的粒子的条件,因为假定 航天器的碎裂就在此时发生。

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