The Boeing B-47 Stratojet was an American long range, six-engine, turbojet-powered strategic bomber designed to fly at high subsonic speed and at high altitude to avoid enemy interceptor aircraft.
The B-47's primary mission was to drop nuclear bombs on the Soviet Union.
With tandem seating like a fighter; and engines carried in nacelles under swept wings--the B-47 was a leap in post-World War II combat jet design, and had a part in the development of modern jet airliners.