Airborne tactical weapon system
EC-130H Compass Call is an airborne, wide area tactical weapon system developed primarily for the US Air Force (USAF), by collaboration between Lockheed Martin, L3 Communications and BAE Systems.
The Compass Call completed 10,400 combat missions and 64,200 flight hours as of February 2014. The USAF intends to procure an additional aircraft by 2016. A total of 14 aircraft have been in service with the USAF’s 55th Electronic Combat Group (ECG) at Davis-Monthan Air Force Base, Arizona, since 2002.
The EC-130H executes electronic warfare, tactical air and countermeasure missions to support the US and Coalition tactical air, surface, and special operations forces. It can extensively deny and disrupt enemy command and control networks. It delivered superior capabilities against enemy command and control links during the military operations in Kosovo, Haiti, Panama, Iraq, Serbia and Afghanistan.
The EC-130H Compass Call airframe is an upgraded version of that of Lockheed Martin’s C-130 Hercules. BAE Systems provided engineering, integration and testing services for the mission systems of the aircraft in addition to providing equipment for low-mid band system. L3 Communications was responsible for the systems integration and depot maintenance.
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The Compass Call made its first flight in 1981 and achieved initial operational capability in 1983. The EC-130H fleet of the USAF consists of Block 20, Block 30 and Block 35 aircraft.
The EC-130H can be easily reconfigured with advanced technologies. The Block 30 modernisation included enhancements to the cargo compartment and operating system software of the Block 20 aircraft.
All aircraft in the fleet were upgraded with Block 35 / Baseline 1 configuration in 2011. The enhancements provided additional capabilities to jamming communication, early warning / acquisition radar and navigation systems with greater effective radiated power, extended frequency range and digital signal processing techniques.
The EC-130H is further modernised to the Baseline-2 standard to achieve improved precision and electronic attack capability. The upgrades included improvements to the mission system and airframe of the aircraft.
The upgrades to the communication suite included the addition of more multi-asset coordination nets, upgradation of the data-link terminals and expansion of satellite communications connectivity for achieving compatibility with the US Department of Defence architectures. The modernisation effort is part of the spiral upgrade acquisition strategy supported by the Big Safari Program office and Air Force Material Command’s 661st Aeronautical Systems Squadron.
The 55th ECG received the first EC-130H Compass Call aircraft with Baseline-2 programmed upgrades in February 2014. The Compass Call fleet will also receive Baseline-3 modifications to achieve additional electronic warfare capabilities.
The Compass Call accommodates a crew of 13 people. It measures 29.3m in length, 11.4m in height, 39.7m in wing span and 101,000lbs in weight. It features in-flight refuelling capability and has a fuel load capacity of 62,000lbs.
The flight deck accommodates two pilots, a navigator and a flight engineer. The mission compartment houses two electronic warfare officers, mission crew supervisor, four crypto logic linguists, an acquisition operator and an airborne maintenance technician.
The aircraft is equipped with advanced communication suite including transmit and receive antennas, and signal acquisition, processing, direction finding and jamming equipment.
Rockwell Collins was selected by L-3 Platform Integration to upgrade avionics of the EC-130H aircraft including communication, navigation and surveillance / air traffic management (CNS/ATM) systems in May 2013.
Data Link Solutions (DLS), a joint venture between Rockwell Collins and BAE Systems, secured a contract in May 2012 for the first full production & fielding (FP&F) of multifunctional information distribution system joint tactical radio system (MIDS JTRS) terminals to provide additional communication capabilities to the Compass Call aircraft.
The EC-130H Compass Call is powered by four Allison T56-A-15 turboprop engines, which develop a thrust of 4,910shp. The aircraft can fly at a speed of 300mph at an altitude of 20,000ft. It has a maximum take-off weight of 155,000lbs, range of 3,694km and ceiling of 7.6km.
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