Archive for the 'Radar' Category

Dec 29

The Launch of Navy Radar

Tuesday, December 29, 2015 10:41 AM

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The frame just above the pilothouse of the USS NEW YORK is the antenna for the XAF, the prototype radar set developed by the Naval Research Laboratory. Installed in 1938, it was the first to be used on board a U.S. warship. (U.S. Naval Institute Photo Archive)

The rectangular frame-like object seemingly fastened above the pilothouse of the USS New York (BB-34), above, wasn’t an oversized mattress spring or an early-model solar panel. It was the antenna for the XAF, the first radar set installed on board a major U.S. warship. Successful tests of the new device—including three months of 20-hour-a-day operation for aircraft detection, navigation, and gunnery practice—convinced the Navy that radar would be a godsend. The awkward-looking, 17-foot-square antenna could reliably detect aircraft as far as 100 nautical miles out and spot surface ships 15 miles away. And it could track projectiles and falling shot… Read the rest of this entry »