LIBERTY LAKE, Wa., 2 Sept. 2008. One of SprayCool's electronics enclosures completed its flight test program in brown-out conditions as part of Sierra Nevada Corporation's Helicopter Autonomous Landing System (HALS). The SprayCool liquid-cooled enclosure, mounted on the front of the UH-60 Black Hawk helicopter, is used as the closed-loop thermal-management system to isolate critical digital and RF electronics used in SNC's three-dimensional (3D) imaging radar.

The most recent flight testing at the Army's Yuma Proving Grounds (YPG) marked the first time the radar was flown in brownout conditions, where the UH-60 negotiated takeoffs, landings, and en-route travel using the system. The HALS system provided the UH-60 pilots with continuous 3D real-time radar imagery of the landing zone throughout the approach, hover, and landing in complete brownout.

SNC's 94 GHz HALS radar imaging system is the critical technology that enables pilots to "see through" brownout conditions. A component of the HALS design is the SprayCool Multi-Platform Enclosure (MPE) which enables the electronics to be located near the radar currently mounted on the front of the Black Hawk. Reliable operation of commercial-grade electronics in such extreme dirty, sandy, and hot environments, which are synonymous with rotorcraft, make SprayCool enclosures uniquely suitable for this application, says a representative.

"The use of SprayCool enclosures allowed our technical team to select electronics that would normally not be possible in these harsh environments," says Greg Cox, VP/GM for SNC's CNS/ATM Division. "This allowed us to use less expensive cards and power supplies in the design."

"SprayCool has been working with SNC for over two years as one of their major subcontractors on both current and predecessor HALS systems," says Matt Gerber, president and CEO of SprayCool "Our unique ability to deploy commercial grade electronics and isolate them from harsh environments has also enabled us to expand into other SNC programs."