|Directory of U.S. Military Rockets and Missiles|
|Copyright © 2001-2004 Andreas Parsch|
The Standard missile program was initiated in 1963 to provide a replacement for the RIM-2 Terrier and RIM-24 Tartar missile systems. The Tartar replacement was designated RIM-66 Standard MR (Medium Range), while the longer-range Terrier replacement became the RIM-67 Standard ER (Extended Range). The Standard is still the U.S. Navy's main medium and long range air defense missile.
All blocks of the Standard SM-1ER missile were designated as RIM-67A. They were essentially identical to the corresponding SM-1MR missile, except for the propulsion. Instead of the MR's MK-56 dual-thrust motor, the ER used an Atlantic Research Corp. MK 30 solid-fuel rocket sustainer motor, and a Hercules MK 12 booster.
|Photo: U.S. Navy|
The main improvements of the SM-2MR Block I/II/III missiles were also included in the corresponding SM-2ER versions, the major new features being the inertial guidance system, and the monopulse seeker for terminal homing. However, SM-2ER is not designed to be fired from Aegis ships. The SM-2ER Block I was designated RIM-67B, and entered service in 1980.
The RIM-67C SM-2ER Block II introduced a new MK 70 booster (regrained MK 12), which almost doubled the range of the SM-2ER. Interestingly, the enhanced booster extended the performance envelope of the RIM-67C well beyond the limits of the then current fire-control system on Terrier ships, but it did of course improve general missile performance against high-performance targets.
|Photo: U.S. Navy|
The RIM-67D SM-2ER Block III had a new model of the sustainer engine (MK 30 MOD 4), and an improved MK 45 MOD 8 TDD (Target Detecting Device).
The SM-2ER Block IV is a version with a completely new finless booster, designed for vertical launch on Aegis/VLS ships. Although this has been reported to be designated RIM-67E, the correct designation is RIM-156A, q.v.
In the 1980's the U.S. Navy planned a nuclear-armed version of the Standard SM-2ER, because the last nuclear armed surface-to-air missiles, the RIM-2D Terrier and RIM-8E/G/J Talos, were about to be retired, leaving the Navy without a nuclear anti-air warfare capability. The nuclear SM-2 was to be equipped with a W-81 fission warhead (4 kT yield). However, these plans have since been dropped, and the U.S. Navy has currently no nuclear-armed SAMs.
In 1995, Hughes (now Raytheon) proposed to convert obsolete RIM-2 Terrier missiles, of which more than 2000 were in storage, to supersonic low-altitude target (SLAT) configuration as a replacement of and/or successor to the MQM-8 Vandal. At 10 m altitude, range would have been 40 km (22 nm) with the MK 30 motor, or 64 km (35 nm) with the new MK 104 dual-thrust motor. As a ballistic missile target, maximum altitude and range could be 85 km (280000 ft) and 275 km (150 nm), respectively (168 km/550 km with MK 104 motor). The designation YRQM-67A was reserved for protoype conversions, but the Terrier conversion plan was eventually dropped. However, Raytheon has converted many surplus SM-2ER rounds (mostly RIM-67C) to TMT (Terrier Missile Target) configuration to serve as ballistic missile targets. Although I don't have firm evidence, these targets are probably designated RQM-67A.
Note: Data given by several sources show slight variations. Figures given below may therefore be inaccurate!
Data for RIM-67A/C, except where noted:
|RIM-67A SM-1ER||RIM-67C SM-2ER|
|Length (incl. booster)||7.98 m (26 ft 2 in)|
|Finspan||1.07 m (42.3 in); booster: 1.57 m (62 in)|
|Diameter||0.34 m (13.5 in); booster: 0.45 m (18 in)|
|Weight||1340 kg (2960 lb)|
|Speed||Mach 2.5||Mach 3.5|
|Ceiling||> 24400 m (80000 ft)|
|Range||65 km (35 nm)||185 km (100 nm)|
|Propulsion||Atlantic Research Corp. MK 30 solid-rocket sustainer|
RIM-67A: Hercules MK 12 solid-rocket booster; RIM-67C: Hercules MK 70 solid-rocket booster
|Warhead||MK 51 continuous-rod||MK 115 blast-fragmentation|
 Norman Friedman: "US Naval Weapons", Conway Maritime Press, 1983
 Norman Friedman: "World Naval Weapons Systems, 1997/98", Naval Institute Press, 1997
 Bill Gunston: "The Illustrated Encyclopedia of Rockets and Missiles", Salamander Books Ltd, 1979
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