GBU-12 Paveway II

GBU-12 Paveway II

The GBU-12 PAVEWAY II laser-guided bomb is an American aerial bomb, based on the Mk 82 500-pound general-purpose bomb, but with the addition of a nose-mounted laser seeker and fins for guidance. A member of the PAVEWAY series of weapons, PAVEWAY II entered into service c. 1976. It is currently in service with U.S. Air Force, US Navy, US Marine Corps, Colombian Air Force, and various NATO air forces.

GBU-12 bombs (along with the balance of the PAVEWAY series) are produced by defense contractors Lockheed Martin and Raytheon. Raytheon began production after purchasing the product line from Texas Instruments. Lockheed Martin was awarded a contract to compete with Raytheon when there was a break in production caused by transferring manufacturing out of Texas. It should be noted that "Paveway II" specifically refers to the guidance kit; rather than the weapon itself. See also GBU-16 Paveway II, where the same guidance unit is fitted to a Mk 83 1000lb bomb.

The US Government has upgraded GBU-12 production versions to include GPS guidance modes. Lockheed Martin is the sole source for US Navy purchases of this version. Raytheon sells upgraded GBU-12s to the US Government and other nations. Raytheon production of the GBU-12 is centered in Arizona, Texas, and New Mexico. Lockheed Martin production is centered in Pennsylvania.

Laser-guided bombs are often labeled "smart bombs" because they are able to follow a non-ballistic trajectory when laser designation of the intended target is undertaken. According to Raytheon's face sheet for the Paveway 2, 99 deliveries of guided munitions will yield a circular error probable (CEP) of only 3.6 feet, vice a CEP of 310 feet for 99 unguided bombs dropped under similar conditions.

Paveway II laser guided bombs use what is known as "bang bang" guidance. This means the bomb's fins deflect fully, rather than proportionally when it is attempting to guide to the laser spot. For example, if it sees the laser spot and determines that it should make a change it deflects its fins until it has over-corrected and then it deflects back the opposite direction creating a sinusoidal type of flight path. This type of guidance may be less efficient at times.

References

External links

* [http://www.raytheon.com/products/paveway/ Raytheon's official Paveway fact page]
* [http://www.globalsecurity.org/military/systems/munitions/gbu-12.htm Globalsecurity.org Paveway fact page]
* [http://www.missilesandfirecontrol.com/our_news/factsheets/Product_Card-LGB-NAVY.pdf Lockheed Martin Paveway fact page]


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