The Fobos-Grunt includes a Fregat-SB based propulsion module, which provides also the trans-Mars injection from low earth orbit. This Fregat-stage is part of the payload. The Zenit-2FG features the payload fairing of the three stage Zenit-3F, which features the Fregat as upper stage.
|Version||Stage 1||Stage 2|
|Zenit-2FG||Zenit-2SB41 (St. 1) / RD-171||Zenit-2SB41 (St. 2) / RD-120 + RD-8|
Nr Type Date LS Payload
75 1 Zenit-2FG 08.11.2011 Ba LC-45/1 Fobos-Grunt / Yinghuo 1 [Fregat-SB] Planned: Launch sites: Ba = Baikonur (Tyuratam, NIIP-5, GIK-5), Tyuratam, Kazakhstan