From Code One magazine:
Source: http://www.codeonemagazine.com/gallery_slideshow.html?item_id=19
The Model 286 was one of three helicopter designs ever built by Lockheed. This five-seat helicopter featured the rigid rotor design first pioneered on the earlier Lockhed CL-475 and retractable skids to minimize drag. Demonstrated top speed was 206 mph. The Model 286 was highly manueverable, as it is shown here powering through the top of a roll manuever. This photo was taken circa 1966 over California.
Source: http://www.codeonemagazine.com/gallery_slideshow.html?item_id=19