| GTR-18 | |
|---|---|
GTR-18 "Smokey Sams" on launch rails |
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| Type | SAM simulator rocket |
| Place of origin | United States |
| Service history | |
| In service | 1980s-present |
| Used by | United States military |
| Production history | |
| Designer | Naval Weapons Center |
| Designed | early 1980s |
| Specifications | |
| Length | 15 inches (380 mm) |
| Diameter | 2 inches (51 mm) |
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| Wingspan | 6 inches (150 mm) |
| Propellant | solid fuel |
| Flight ceiling | 1,800 feet (550 m) |
| Guidance system |
None |
The GTR-18A, commonly known as the Smokey Sam, is a small unguided rocket developed by the Naval Weapons Center as a threat simulator for use during military exercises. Widely used in training, the Smokey Sam remains in operational service with the United States military.
The development of the GTR-18 was undertaken by the Naval Weapons Center (NWC) during the early 1980s, with the intent of developing a simple and inexpensive rocket for visually simulating the launch of surface-to-air missiles (SAMs) during training exercises.[1]
Constructed from phenolic paper and styrofoam, the Smokey Sam is designed for minimal cost and, in the event of accidentally striking low-flying aircraft, to cause minimal damage.[1]
The complete launch system, known as the Smokey Sam Simulator, includes single- and four-rail launching pads, an AN/VPQ-1 radar set, and the GTR-18A rockets themselves, making up the SMU-124/E system as a whole.[1]
When launched, the GTR-18's rocket motor produces a distinctive white plume, providing a realistic simulation of the launch of a surface-to-air missile.[2] While the ordinary GTR-18A has a simple, model rocket type motor, an improved 'Dual Thrust Smokey Sam' tested in the early 2000s featured a modified rocket motor, providing a 1.5 second boost period, followed by a lower-thrust sustainer burn with burnout occurring at 7.1 seconds after launch.[3]
Receiving the altered designation DGTR-18A in the early 1990s, the Smokey Sam remains in production and operational service, being extensively used by the U.S. military.[1]
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