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SOM Air Launched Cruise Missile (ALCM) Hits 300 km!
Designed, developed and manufactured by TüBiTAK-SAGE, Defence Research and Development Institute of Turkey, under a US$80 Million valued contract awarded by the Turkish MoND in March 2oo6, the SOM is a family of new generation, air launched non-nuclear, long range, fire and forget type precision strike missiles capable of defeating both fixed non-hardened and hardened land targets as well as moving sea targets. The 1.300 lb (600 kg) SOM ALCM’s airframe is designed with stealth capability provided by the shape of the airframe and the materials used in its construction, to give the missile a low detection probability and allow it to penetrate enemy air defence systems.
Under the project prototype missiles were manufactured in 2oo8 and following extensive wind tunnel and systems tests, captive-carry and release trials were performed from a F-4E 2o2o aircraft in 2o1o. 2o1o also witnessed first live firing test of SOM-A (INS/GPS + TRNS guided version) from a F-4E 2o2o aircraft. SOM-A aircraft release tests were also performed on a F-16D Block 40 in 2o11. SOM was first displayed aboard a TuAF F-16C Block 50 aircraft during the 100th year celebrations of the Turkish Air Force held at the 2nd MJB Command in Çiğli, Izmir during June 4-5 2o11. During a live firing test performed on August 9, 2o11 with F-4E 2o2o in Black Sea, SOM-A flew more than 100 nm (185km) before hitting its determined target with high accuracy. SOM’s first international debut was took place during DSEi Exhibition in London UK, where the full-scale mock-up of the missile was displayed at TüBiTAK-SAGE stand in September 2o11. The delivery of a first batch of missiles to the Turkish Air Force was supposed to take place by the end of 2o11. The TuAF requires “hundreds” of SOMs, and serial production of SOM missiles will be carried out by a Turkish Defence Industry company (MKEK and Roketsan are potential candidates) starting from 2o13 since TüBiTAK-SAGE performs only design and prototype production.
Though the missiles effective range was initially announced as 100 nm, (185km) speaking at the press meeting held at TüBiTAK Headquarters in Ankara on January 13, 2o12 to update press members on the recent developments on Turkey’s missile programs President of the TüBiTAK (The Scientific and Technological Researches Council of Turkey) Prof. Dr. Yücel ALTUNBAŞAK stated that they have been carrying firing tests with SOM missile up to the range of 300 km and during recent test missile has successfully hit its target at 300 km with circular error probable (CEPs) of 5 meters, even they had goaled 1om CEP. He went on saying, “We are planning to perform 500 km (air launched version, ALCM) range firing tests in 2o12 with SOM. Later the range will be extended to 1.500km and eventually to 2.500 km (surface launched versions, LACM) in 2o14.” ALTUNBAŞAK, also underlined that the order for the extended range missile program had come from Prime Minister Recep Tayyip ERDOĞAN.
Powered by a Microturbo TR-40 turbojet engine (in the 2.5 kN to 3.34 kN [560 lbf to 750 lbf) thrust class, the SOM is an indigenously developed high-subsonic cruise missile designed to meet Turkish Air Force requirements. Though it is smaller it shares several features with LFK KEPD-350 Taurus and MBDA Scalp/Storm Shadow missiles. SOM ALCM has three versions; SOM-A is equipped with INS/GPS guidance system plus Terrain Referenced Navigation System (TRNS/TERCOM) coupled with radar altimeter and has 230 kg HE type unitary warhead. SOM-B1 version also has HE type unitary warhead, whereas SOM-B2 is armed with dual-stage tandem penetrator and in addition to GPS/INS they both also employ Imaging Infrared Seeker (IIR, has cooled type 640x512 pixels detector) for enhanced terminal guidance plus TRNS/TERCOM, radar altimeter and Automatic Target Recognition (ATR) system. IIR seeker can be used to provide image-based midcourse navigation (IBN) by taking snapshots of waypoints and comparing them against predicted position to update the navigation system. Intended targets for the SOM ALCM are including command and control facilities, surface-to-air missile (SAM) sites, parked aircraft, hardened aircraft shelters (HAS), strategic assets and surface ships.
Design and development studies on SOM-A and SOM-B1 have been completed and works on SOM-B2 are scheduled to be completed by the end of 2o13.
TüBiTAK-SAGE is also working on a two way encrypted RF data-link capability, which will allow in-flight re-tasking against moving targets, for SOM missiles and planned to complete its studies until the missile enters serial production phase.
SOM can be carried internally by the F-35 Lightning II JSF, if the tail fins are folded and TuAF plans to deploy SOM ALCM on F-35As. For this purpose a number of TüBiTAK-SAGE personnel joined Turkey’s JSF Project Team.
The French Microturbo TR-40 turbojet engine, to be replaced with Kale Aero’s indigenous turbojet engine, GPS, INS, IIR detector, ATR sensor and radar altimeter have been sourced from abroad, but algorithms for ATA system, IIR seeker and TRNS have been developed by TüBiTAK-SAGE engineers. The fuel system and warheads on board the SOM ALCMs were also designed locally. TüBiTAK-SAGE has also developed a Mission Planning System, a digital flight control computer with a capacity for up to 50 waypoints and a thermal battery with a service life of 25 minutes for the SOM ALCM family.
SOM ALCM Specifications:
Weight: 600 kg (1.300 lb)
Length: 3.85 m
Warhead: 230 kg (500 lb) HE unitary or Dual Stage Tandem Penetrator
Engine: Microturbo TR-40 turbojet engine
Wingspan: 2.6 m (during flight)
Operational Range: 15onm, (500km will be tested in 2o12)
Cruise Speed: Mach 0.8
Guidance System: INS/GPS, TRNS/TERCOM, ATR, IIR, radar altimeter + two way RF data link
Launch Platform: F-4E 2o2o, F-16D and F-35A (planned)
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