The second prototype was equipped with extra highly effective General Electric J47-GE-three turbojets with 5,200 lbf (23 kN) of static thrust each. The second XB-forty seven (46-066) prototype first flew on 21 July 1948 and, following its delivery to the USAF in December of that yr, served as a flying test mattress till 1954. Its closing vacation spot was Chanute AFB where it was used as a upkeep and familiarization aircraft. An RB-forty seven flying from Alaska was scouting the Kamchatka Peninsula on 17 April 1955, Vape Clearance when it was intercepted by Soviet MiG-15s in international airspace earlier than disappearing.

Flying the CL-52 was reportedly a nightmare. The CL-52 was the only B-47 to be utilized by any international service. In 1956, a B-47B was converted into a WB-47B weather reconnaissance model and operated by the Military Air Transportation Service (MATS), one of some B-47s not operated by SAC. The B-forty seven was additionally tailored to perform plenty of other roles and functions, together with photographic reconnaissance, digital intelligence, Vape Shop and weather reconnaissance.

On 31 March 1960, vape store B-47E serial quantity 52-1414, of the 384th Bomb Wing (SAC), 545th Bombardment Squadron, Little Rock AFB, Vape Kits exploded inflight over Little Rock, Vapor STARTER KITS Arkansas. The B-forty seven was the backbone of SAC into 1959, Vape Kits when the B-fifty two started to assume nuclear alert duties and the number of B-forty seven bomber wings began to be reduced. After the Arrow was canceled in early 1959, the B-47B/CL-52, which noticed 35 hours of engine flight exams, was returned. The 2 XB-47s had been neither fitted with combat gear nor tail turrets as they had been engineering and flight take a look at aircraft solely.

The XB-forty seven prototype flew its first flight on 17 December 1947 (the anniversary of the Wright Brothers' first 4 flights on 17 December 1903), with check pilots Robert Robbins and Scott Osler on the controls. Robbins had been skeptical about the XB-47, Vape Clearance saying that before his first flight he had prayed, "Oh God, please assist me by way of the following two hours." Robbins quickly realized that he had an extraordinary aircraft.

B-47s had been typically arrange on "one-third" alert, with a 3rd of operational aircraft accessible sitting on hardstands or Vape Clearance an alert ramp adjacent to the runway, loaded with gas and nuclear weapons, crews on standby, able to assault the USSR at brief discover. In November 1949, prior to the B-47A's first flight, the USAF ordered 87 B-47Bs, the primary operational mannequin. In 1963, the Kennedy administration offered 24 B-47E bombers as an interim Canberra Mk 20 alternative for the Royal Australian Air Force (RAAF), pending delivery of the a lot delayed F-111C aircraft.

Much work was performed to improve avionics reliability, but avionics remained troublesome throughout the B-47's operational life.