The US Air Force (USAF) has awarded Lockheed Martin a USD37.7 million contract for the continued development of a new wing design to equip Lot 17 and follow-on production models of the AGM-158B Joint Air-to-Surface Standoff Missile – Extended Range (JASSM-ER) conventional precision-guided standoff air-to-surface stealth missile.
Externally identical to the baseline AGM-158A JASSM, JASSM-ER is 4.26 m in length, 450 mm in height, >635 mm in width, with a deployed wing span - using the current wing design - of 2.7 m. With an estimated launch weight of 1,200 kg (2,645 lb), and equipped with a 1000 lb (454 kg) dual-mode penetrator, blast fragmentation warhead, the AGM-158B is a day/night all-weather capable weapon, furnished with an inertial navigation system (INS)/enhanced digital anti-jam Global Positioning System (GPS) receiver to dial into specific target aimpoints, with an advanced imaging infrared seeker for terminal guidance. Powered by a Williams International F107-WR-105 turbofan engine – which replaces the Teledyne J402-100 turbojet engine in the baseline AGM-158A – and equipped with INS/GPS navigation and imaging infrared terminal guidance, JASSM-ER has a current given range of >500 n miles.
Jason Denney, Programme Director for Long Range Strike Systems at Lockheed Martin Missiles and Fire Control told Jane’s that the new wing design will deliver a “significant range increase” for the JASSM-ER. Denney was not cleared to disclose specifics with regard to range augmentation, or the design, dimensions and weight of the new wing, noting only that it leverages laminar flow technologies.
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