Lockheed Martin literally makes satellites cooler

Lockheed Martin has improved a cooling system that enables satellites to carry more sensitive infrared sensors.

The latest version of the High Power Microcryocooler "delivers more than 150 watts per kilogram, a significant advancement from the 30-60 watts per kilogram rating most space-rated cryocoolers deliver," according to a Lockheed Martin news release. It packs about three times as much power in its small package as previous versions, according to Dr. Jeffrey Olson, a research scientist at Lockheed Martin's Advanced Technology Center. The device weighs less than a pound, which is less than half the weight of similar cooling systems, according to the company.

Satellite sensors and cameras need to be cooled to operate optimally, sometimes to temperatures as low as -320 F.

"With higher power, this microcryocooler enables larger, more sensitive IR sensors, which is especially useful for very high-resolution images," the company said.

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