Dynamical aspects of the spatial gravity assists using for the forming high inclined orbits in the planetary missions

Low-cost interplanetary tours with the high inclined orbit`s formation in the Solar system using gravity assists near its planets are considered with the accurate ephemeris using. Limited dynamic opportunities of their use require multiple passes near them. Topicality of the regular creation of optimum scenarios sequences of cranking passing of celestial bodies is obvious. This work is devoted to the description of required features of trajectory`s beams for the creation of such chains. Previously a comparative analysis of various modern astrodynamics studies of the 3D implementation of the gravity assists taking into account accurate ephemerides was performed [1]. Improved analytical formulas for the change of the inclination as a result of 3D gravity assist [1] were obtained and realistic results of the computation of parameters of the spacecraft`s orbit inclination changes at the Solar system bodies were presented. The Labunsky estimate of the admissible inclination variations and the corresponding graphs for the single gravity assist [2] somewhat differ from the more accurate presented calculations. The algorithms for designing multi-pass chains of multiply gravity assists are described that result in the energy-efficient increase of the inclination of the SC orbit to the ecliptic plane. Applications for the modern projects mission design are given.

References

[1] A. Grushevskii et al. (2017) To the high inclined orbit formation with use of gravity assists. Advances in Astronautical Sciences, Vol. 161, pp. 417-434.

[2] A. Labunsky et al. (1998) Multiple Gravity Assist Interplanetary Trajectories.
ESI Book Series (Gordon and Breach, London), 1998, pp. 9-266.