RIM-161 Standard Missile 3
The RIM-161 Standard Missile 3 (SM-3) is a ship-based surface-to-air missile system used by the United States Navy to intercept short- and intermediate-range ballistic missiles as a part of Aegis Ballistic Missile Defense System. Although primarily designed as an anti-ballistic missile, the SM-3 has also been employed in an anti-satellite capacity against a satellite at the lower end of low Earth orbit. The SM-3 is primarily used and tested by the United States Navy and also operated by the Japan Maritime Self-Defense Force.
| RIM-161 SM-3 | |
|---|---|
A RIM-161 Standard Missile (SM-3) is launched from the Aegis cruiser USS Lake Erie | |
| Type | Kinetic surface-to-air missile (Aegis Ballistic Missile Defense System) |
| Place of origin | United States, Japan (Block IIA) |
| Service history | |
| In service | 2014–present (Block IB) |
| Used by | United States Navy Japan Maritime Self-Defense Force Republic of Korea Navy |
| Production history | |
| Manufacturer | Raytheon, Aerojet, (Mitsubishi Heavy Industries Block IIA) |
| Unit cost | |
| Specifications | |
| Mass | 1.5 t |
| Length | 6.55 m (21 ft 6 in) |
| Diameter | 34.3 cm (13.5 in) for Block I missiles 53.3 cm (21 in) for Block II |
| Wingspan | 1.57 m (62 in) |
| Warhead | Lightweight Exo-Atmospheric Projectile (LEAP) kinetic warhead |
| Propellant | Stage 1: MK 72 Booster, solid-fuel, Aerojet Stage 2: MK 104 Dual Thrust Rocket Motor (DTRM), solid-fuel, Aerojet Stage 3: MK 136 Third Stage Rocket Motor (TSRM), solid-fuel, ATK Stage 4: Throttleable Divert and Attitude Control System (TDACS), Aerojet |
Operational range | Block IA/B: 900 – 1200 km (560 – 745 miles) Block IIA: 1,200 km range and flight ceiling 900 – 1,050 km (depending on the type of target) |
| Maximum speed | 3 km/s (Mach 8.8) Block IA/B 4.5 km/s (Mach 13.2) Block IIA |
Guidance system | GPS/INS/semi-active radar homing/passive LWIR infrared homing seeker (KW) |
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