Republic XP-72 Superbolt - Was Designed Around the Pratt & Whitney R-4360 Wasp Major 28-Cylinder Air Cooled Radial Engine with a Supercharger Mounted Behind the Pilot and Driven by an Extension Shaft from the Engine – Armament: 6 x .50 cal Wing Mounted Machine Guns and Two Underwing Racks for 1,000 lb Bombs - With the Advent of the New Turbojet-Powered Interceptors Only 2 Were Built (2)
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Convair YB-60 takeoff, 1952. This was an 8-engine jet derivative of the B-36 Peacemaker. Convair YB-60 serial number 49-2676 (seen here) made its maiden flight on 18 April 1952. A second prototype was never completed. The U.S. Air Force ultimately chose the Boeing B-52 for its jet-powered heavy bomber. The YB-60 prototype was subsequently scrapped.
Scout's Atomic Flash
McDonnell XF-85 ‘Goblin,’ 1946 - An American prototype fighter aircraft conceived during World War II by McDonnell Aircraft. It was intended to be deployed from the bomb bay of the giant Convair B-36 bomber as a parasite fighter. The XF-85’s intended role was to defend bombers from hostile interceptors, a need demonstrated during World War II. Two prototypes were constructed before the program was terminated.