Boeing Selects ACT to Provide Electronic Thermal Management Technology for SLAM-ER Missile Guidance Systems

ST. LOUIS- Boeing Co. smart munitions experts needed electronic cooling technologies for anti-ship and land-attack missile guidance systems. They found their solution at Advanced Cooling Technologies Inc. (ACT) in Lancaster, Pennsylvania.

Boeing Defense, Space & Security segment managers in St. Louis awarded a $7 million contract to ACT to manufacture a thermal solution for onboard guidance technology used on the Harpoon and SLAM cruise missile systems -ER.

Thermal management is a critical enabling technology as these systems become more efficient and accurate, ACT officials say. Boeing and ACT worked closely together during the design to optimize the solution in terms of performance, mass and space.

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ACT’s thermal management hardware will help maintain safe operating temperatures of missile guidance systems, company officials said. “We have spent the last year working closely with the Boeing team, creating prototypes and getting this innovative and highly reliable thermal solution where it needs to be for mass production efforts,” said Greg Hoeschele, Senior Product Development Engineer at ACT.

The Boeing AGM-84H/K Standoff Land Attack Missile-Expanded Response (SLAM-ER) is 14.3 feet long, 13 inches in diameter, and weighs 1,487 pounds.

The SLAM-ER, an air-launched cruise missile, is a derivative of the Boeing Harpoon anti-ship missile, which can attack land and sea targets up to 155 nautical miles away. It relies on Global Positioning System (GPS) and infrared imagery for its navigation and control, and can strike both moving and stationary targets.

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SLAM-ER missiles achieved initial operational capability in June 2000. They can be launched from the US Air Force’s F/A-18 Hornet, F/A-18 Super Hornet and F-15E Strike Eagle. The missile carries an 800-pound explosive warhead and uses an inertial navigation system supplemented by GPS, with infrared terminal guidance.

ACT focuses on custom thermal management solutions using two-phase heat transfer. The Company’s products include heat pipes, custom liquid cold plates, heat exchangers and thermally enhanced wedgelocks. On this contract, ACT’s product development team has scheduled first deliveries for 2023.

For more information, contact ACT online at, or Boeing Defence, Space & Security at