NPO Lavochkin's Fregat upper stage, Gallery

Stage	Engine	Thrust (low)	Isp (low)	Thrust (high)	Isp (high)	Propellant	Burn time	Flow rate	Total Imp
-	-	kN	N*s/kg	kN	N*s/kg	tons (max)	s	t/s	MN*s
Fregat	S5.92	13.73	3168	19.61	3207	5.35	1235......874	0.0043....0.0061	16.9...17.2
Fregat-M	S5.92 (extended nozzle)	13.96	3222	20.01	3268	6.64	1535...1085	0.0043....0.0061	21.4...21.7
Fregat-MT						7.10	1640...1160		22.9...23.2
Fregat-SB						10.00	2310...1635		32.2...32.7
Fregat-SBU						10.71	2475...1750		34.5...35.0
Fregat-2						12.24	2830...2000		39.4...40.0