Popular Mechanics | The Cannons on the B-29 Bomber Were a Mid-Century Engineering Masterpiece Popular Mechanics The Cannons on the B-29 Bomber Were a Mid-Century Engineering Masterpiece. Five remote-controlled cannons with computer-aided aiming made the Superfortress way, way ahead of its time. By Chris Clarke. Nov 30, 2015 @ 9:24 AM. Military · Weapons ... |