AMPAC-ISP UK Limited manufactures the flight qualified LEROS^® product
line of bipropellant apogee and stationkeeping thrusters. We have
delivered and flown more than 400 thrusters, ranging from 2 lbf to 160 lbf
of thrust. We also manufacture MONARC^® hydrazine monopropellant
engines and engine components.

AMPAC-ISP’s LEROS 1 family of flight-proven, bipropellant, dual mode
apogee engines have demonstrated performance improvements over
three design generations. These engines have provided a cost-effective
solution to challenging satellite apogee and interplanetary missions. The
LEROS 2b engine adds monomethylhydrazine (MMH) apogee capability to
the LEROS family, offering high performance in a coated Columbium engine, at an excellent value.