AGM-86C Block I CALCM Conventional Air Launched Cruise Missile
The CALCM Block I missile incorporates a 3,000-pound Class blast fragmentation warhead and Global Positioning System (GPS) receiver for navigation. The Block I system, when launched from CONUS based B-52 aircraft is highly effective against soft, above ground targets like Surface-to-Air Missiles (SAM) or radar sites. The new missile is twice as accurate, has twice the explosive capacity and costs two-thirds less than the Block 0 version. In 1995 Boeing was contracted to produce 100 Block I missiles. The CALCM contract order was increased to 200 units in 1996. In July 1996 Boeing delivered to the Air Force the first Block I CALCM with producibility enhancements for a conversion cost of approximately $150,000 per missile. On 21 April 1999 Boeing was awarded a $41,310,000 firm-fixed-price contract to provide for the conversion of 95 excess AGM -86B Air Launched Cruise Missiles to Block I AGM-86C Conventional Air Launched Cruise Missiles. Expected contract completion date was 30 November 1999. By January 2001 Boeing had already delivered 140 of the missiles in the Block 1 configuration.
Block 0/I missiles are being retrofitted to Block IA with a precision accuracy kit that uses a third generation GPS receiver along with advanced navigation software, and a GPS anti-jam electronics module and antenna for a significant increase in jamming immunity. Major kit components include the GPS Receiver Interface Unit/Precision (GRIU/P) built by Interstate Electronics Corporation; a GPS anti-jam module built by Harris; and a four element GPS antenna array based on the design by Boeing Phantom Works. To increase CALCM effectiveness against a wider spectrum of targets, a capability for shallow to near-vertical dive angles from any approach reference point also is being integrated. Flight software improvements include a large-state Kalman filter for optimizing GPS accuracy, to include code and phase measurement data, pressure and temperature measurements, and wide-area GPS enhancement to reduce system errors.
The contract for Block IA was awarded in April 1998 with initial kit deliveries scheduled for July 2000. Under the development and production contract, Boeing will develop and deliver 28 missile retrofit kits to the Air Force, which will complete the missile kit installation. Boeing was awarded two contracts in 1999 to convert 322 surplus Air-Launched Cruise Missiles into CALCMs. Of those missiles, 132 were to be delivered in the Block 1A configuration.
In January 2001 Boeing delivered the first Block 1A Conventional Air-Launched Cruise Missile, or CALCM, to the U.S. Air Force. Six of the new missiles were shipped to Fairchild Air Force Base in Spokane, Wash., for inspections and ground checks prior to a planned first flight in February. During the rest of the year Boeing delivered more than 200 kits of the new hardware and software to be retrofitted into earlier Block 0 and Block 1 models of CALCM.
|Join the GlobalSecurity.org mailing list|