First stage engines:
Three Aerojet AJ26-58/-59 LOX/kerosene engines
with a total sea level thrust of 1,020,000 lbf (4,540 kN).
Second stage engines:
One Aerojet AJ26-60 LOX/kerosene engine
with a total vacuum thrust of 395,000 lbf (1,760 kN).
One Aerojet LOX/ethanol Orbital Manuvering System (OMS)
engine with a total vacuum thrust of 870 lbf (3.9 kN).
K-1 Payload Capability
The charts below show the K-1 performance capability at various orbital inclinations.