#### 531.36:521.1 Mathematical model of a two-tether system consisting of a space station and a dynamically symmetric asteroid

##### Rodnikov A. V. (Bauman Moscow State Technical University)

doi: 10.18698/2309-3684-2017-4-92101

The purpose of the research was to build a mathematical model of an natural-artificial space tether system consisting of a space station and an asteroid, close in its dynamic characteristics to a dynamically symmetric solid body, connected by two tethers. The article describes some criteria of existence and stability for equilibrium configurations of the system deduced within the assumptions of the constructed model. Moreover, it classifies the types of the station motions near the asteroid surface, and gives the conditions ensuring the motions with taut tethers.

Rodnikov A.V. Mathematical model of a two-tether system consisting of a space station and a dynamically symmetric asteroid. Mathematical Modeling and Computational Methods, 2017, №4 (16), pp. 92-101.

#### 531.36:521.1 Modelling the search for stationary space station orbits in the vicinity of an oblate-shaped asteroid

##### Rodnikov A. V. (Bauman Moscow State Technical University)

doi: 10.18698/2309-3684-2016-3-110118

We suggest a numerical and analytical algorithm of searching for stationary space station orbits in the vicinity of an oblate asteroid, when these orbits correspond to relative equilibrium positions of the space station on the plane defined by the asteroid precession and proper rotation axes, in the case of the asteroid being represented by a solid body of an approximately dynamically symmetric shape, compressed along the axis of dynamic symmetry. The algorithm is based on representing the asteroid gravitational potential by a composition of two complex conjugate point masses and consists of sequential variable substitution steps, reducing the problem to solving algebraic equations analytically and numerically. We supply a number of facts concerning evolution of stationary orbits in cases of changes in precession angular velocity.

Rodnikov A. Modelling the search for stationary space station orbits in the vicinity of an oblate-shaped asteroid. Маthematical Modeling and Coтputational Methods, 2016, №3 (11), pp. 110-118