Use of lunar gravity assist maneuver in interplanetary electric propulsion trajectory design

Space technics and technology


Elnikov R. V.

Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia



This article describes amethod for calculation and optimization of interplanetary trajectories which use lunar gravity assist maneuver for space vehicles equipped of electric propulsion system. As an example of application techniques, analyzed the Earth –Moon - Mars trajectory for space transportation system, based on launch vehicle "Soyuz2-1b" and upper stage "Fregat".We present estimates of the gains in the final mass of the spacecraft, which can be obtained through the use of lunar gravity assist for this flight.


spacecraft; electric propulsion system; interplanetary trajectory; lunar gravity assist; optimization.

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