Boeing B-47 Stratojet — jet-powered strategic bomber
The B-47 first flew in 1947 and entered operational service in 1951. Its swept-wing design and six-engine configuration reflected lessons learned from German aerodynamic research. The aircraft was designed to deliver nuclear weapons as part of the United States’ strategic deterrent.
Powered by six General Electric J47 turbojet engines producing approximately 7,200 pounds of thrust (32 kN) each, the B-47 cruised at around 500 knots (925 km/h). Maximum takeoff weight exceeded 200,000 pounds (90,720 kg). The aircraft required long runways and specialized landing gear techniques.
The Stratojet formed the backbone of U.S. Strategic Air Command during the 1950s. It was eventually replaced by larger and longer-range bombers. The B-47’s aerodynamic configuration influenced subsequent jet aircraft designs worldwide.
Development and Production
The development of the Boeing B-47 Stratojet can be traced back to a constraint articulated by the US Army Air Forces. In 1951, this aircraft entered service, and it never saw warfare as a bomber. However, it was a support of Strategic Air Command’s bomber strength from 1950 to 1960. It was also altered to several missions, including electronic intelligence, photo reconnaissance, and climate reconnaissance, continuing in service as a scouting platform until 1969.
Cockpit / Flight Deck
The Boeing B-47 Stratojet was described as highly advanced with a sleek and stunning outcome. The 35-degree swept annexes were shouldered-fixed, with the dual inboard turbojet engines. It also has an outboard engine mounted below the wings squat of the wingtips.
The maximum speed of this aircraft was restricted to 425 knots or 787 kilometers/hour. Its wings were tailored with a Fowler flap set that protracted well behind the wing. Its main purpose is to boost lift at relaxed speeds. This aircraft was designed to carry at least three crews in a coerced forward section, usually a pilot, co-pilot, and a navigator. The navigator doubled as a bombardier, and the co-pilot acted as a tail gunner.
Engines
The first models of the Boeing B-47 Stratojet were built-in with General Electric J35 turbojets. Early plane engines did not produce good thrust at relaxed speeds. This aircraft had provisions for fitting 18 solid-fuel rocket-assisted takeoffs or simply called RATO rocket to assist a profoundly loaded bombers launch. Each of them has 1000 lbs of static thrust.
Versions / Variants
One of the variants of the Boeing B-47 Stratojet is the XB-47. This was a two-prototype and was built as 450-2-2 and 450-1-1 powered by 6 Allison turbojet engines. Another version is called B-47A. These first ten designs were delivered in 1950, and its configuration was close to the original XB-47 models.
Other versions of B-47 includes B-47B, YRB-47B, TB-47B, MB47-B, YDB-47B, WB-47B, YB-47C / RB-47C / B-47Z / B-56, and many more.
Notable Accidents and Incidents
In 1956, four Boeing B-47 Stratojets departed MacDill Air Force Base in Florida. Their first aerial refueling was successfully done. After sliding through the cloud to start their next refueling, the pilot named Hodgin, together with his team, failed to contact the tanker. News claimed that the rescue team didn’t find the aircraft and its personnel.
In 1956, Boeing B-47 Stratojet crashed at RAF Lakenheath, resulting in a serious incident. It killed the crews and caused a near nuclear mishap when the plane hit a stowing igloo with 3 MK-6 nuclear bombs. Even if the bombs involved in the incident did not have their mounted fissile core, they still carried several pounds of dangerous bombs.
