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| North American B-45 Tornado | |
|---|---|
| Name | North American B-45 Tornado |
| Caption | B-45 in flight |
| Role | Strategic bomber |
| Manufacturer | North American Aviation |
| First flight | 1947 |
| Introduced | 1948 |
| Retired | 1963 |
| Primary user | United States Air Force |
| Produced | 143 |
| Status | Retired |
North American B-45 Tornado The North American B-45 Tornado was the first operational jet bomber for the United States Air Force and a pioneering design from North American Aviation that influenced Cold War strategic bombing doctrine and tactical nuclear weapons deployment. Developed in the immediate post-World War II era, the B-45 served in the early Korean War and Cold War contingencies, interfacing with organizations such as Strategic Air Command and contributing to technological advances used later by aircraft like the Boeing B-47 Stratojet and Convair B-36 Peacemaker.
The B-45 originated from a 1945 Army Air Forces requirement and was produced by North American Aviation in competition with designs from Boeing and Consolidated Aircraft. Its design incorporated lessons from Republic P-47 Thunderbolt development programs and employed four jet engines derived from work at General Electric and Allison Engine Company, reflecting post-V-2 rocket propulsion advances and influences from captured Messerschmitt Me 262 research. Aerodynamic features such as swept wings and tricycle landing gear were informed by experiments at National Advisory Committee for Aeronautics facilities and wind tunnels at Langley Research Center, while structural and fuel-system solutions echoed practices from Lockheed and Douglas Aircraft Company projects. The prototype first flew in 1947, undergoing flight testing overseen by personnel with ties to Air Materiel Command and pilots who later served at Wright-Patterson Air Force Base.
Entering service in 1948, B-45 units were assigned to Strategic Air Command wings that had rotated through bases like RAF Sculthorpe and RAF Marham during early Cold War deployments. The bomber's early operational tasks included nuclear deterrence patrols coordinated with NATO commands, joint exercises with units from Royal Air Force and contingencies planned with United States European Command. B-45s performed reconnaissance and weather, electronic warfare, and training missions with crews trained at Lackland Air Force Base and supported by logistics from Tinker Air Force Base. During the Korean War, modified versions carried out overflight and strike-support planning with coordination involving Far East Air Forces and allied intelligence organizations. By the mid-1950s, faster jet designs such as Boeing B-47 Stratojet and operational changes at Strategic Air Command rendered the B-45 less capable for emerging high-altitude, long-range missions, resulting in retirement by the early 1960s and transfer of some airframes to programs at Eglin Air Force Base for test work.
The B-45 family included multiple variants developed for differing missions and modifications influenced by experiments at Edwards Air Force Base and requirements from Air Force Materiel Command. Key variants comprised: - Initial XB-45 prototypes evaluated by test squadrons with input from Air Proving Ground Command. - B-45A: Early production bomber assigned to Strategic Air Command wings at bases like Carswell Air Force Base and used for nuclear training. - B-45B: Electronic reconnaissance and test conversions performed in collaboration with specialists from Rome Air Development Center and reconnaissance groups from Air Defense Command. - RB-45C: Reconnaissance conversions equipped with cameras and signal gear used on missions linked to Eighth Air Force operations and intelligence-sharing with Central Intelligence Agency analysts; notable for overflight missions in early Cold War Europe coordinated with NSA and allied services. - Trainer and target-tow conversions for training units at Sheppard Air Force Base and weapons development at Holloman Air Force Base.
General characteristics and performance reflected contemporary jet technology and were comparable in some respects to later types such as the English Electric Canberra and influenced by engine development at General Electric and Rolls-Royce partnerships: - Crew: typically 3–4, trained through programs at Great Lakes Naval Training Station and Keesler Air Force Base. - Powerplant: four jet engines with development lineage connected to Allison Engine Company and General Electric projects. - Maximum speed, range, and service ceiling were documented in technical orders used by maintenance units at Wright-Patterson Air Force Base and operational planning at Strategic Air Command headquarters. - Armament and payload configured for tactical and strategic loads, including adaptations for early Mark 7 nuclear bomb carriage and training ordnance used at Punta Arenas and missile-development test ranges.
Several B-45 airframes were preserved in museums and collections influenced by curatorial work at institutions like Smithsonian Institution and regional museums with affiliations to National Museum of the United States Air Force. Surviving aircraft have appeared at air shows coordinated by Experimental Aircraft Association chapters and have undergone restoration by volunteers associated with organizations such as Commemorative Air Force and local historical societies. Preservation efforts often relied on archival materials held at Air Force Historical Research Agency and technical manuals from National Archives and Records Administration to guide structural and cockpit restorations.
Primary operators included units within United States Air Force major commands: - Strategic Air Command wings and bombardment groups, with deployments to European bases coordinated through United States Air Forces in Europe. - Reconnaissance and test units under Air Proving Ground Command and later Air Force Systems Command for evaluation and electronic warfare development. - Training and support detachments at stateside bases including Lackland Air Force Base, Sheppard Air Force Base, and maintenance support at Tinker Air Force Base.
Category:United States bomber aircraft