ines . ▁ ▁Product s ▁ ▁Current ▁engines ▁Eng ines ▁in ▁current ▁production : ▁Mon op rop ell ant ▁Th rust ers ▁D OT - 5 ▁D OT - 2 5 ▁M LC - 1 0 ▁M LC - 5 0 ▁B ip rop ell ant ▁Th rust ers ▁S 5 . 1 4 2 ▁( D ST - 2 5 ) ▁D ST - 5 0 ▁D ST - 1 0 0 ▁D ST - 1 0 0 A ▁D ST - 2 0 0 ▁D ST - 2 0 0 A ▁D MT - 6 ▁D MT - 5 0 0 ▁D MT - 6 0 0 ▁D MT - 1 0 0 0 ▁D MT - 2 2 0 0 ▁Main ▁prop ulsion ▁S 5 . 8 0 ▁S 5 . 9 2 ▁S 5 . 9 8 ▁K VD - 1 ▁Prop ulsion ▁Mod ules ▁K T DU - 8 0 ▁Ex perimental ▁Eng ines ▁С 5 . 8 6 . 1 0 0 0 - 0 ▁ ▁Form er ▁engines ▁Eng ines ▁that ▁are ▁no ▁longer ▁produced . ▁ ▁Mon op rop ell ant ▁Th rust ers ▁S 5 . 7 0 : ▁U sed ▁on ▁Ph ob os ▁ 1 ▁space craft . ▁S 5 . 7 0 : ▁U sed ▁on ▁Ph ob os ▁ 1 ▁space craft . ▁B ip rop ell ant ▁Th rust ers ▁S 5 . 1 4 4 : ▁U sed ▁on ▁the ▁control ▁module ▁ 1 7 D 6 1