Standard Missile-1 MK56 Regrain
Aerojet Rocketdyne provides the remanufactured MK-56 dual thrust, solid propellant rocket motors for the SM-1 Full Service Support program. The SM-1 Full Service Support Program provides users with continued access to spares and repair services. SM-1 entered production in 1967 and is still operational with the US Navy and many international navies. SM-1 introduced a dual-thrust rocket motor for greater range and maneuverability and a new battery to power it throughout longer flight.