Role Supersonic strategic bomber
National origin United States
Manufacturer Convair
First flight 11 November 1956
Introduction 15 March 1960
Retired 31 January 1970
Status Retired
Primary user United States Air Force
Number built 116
Developed into Convair Model 58-9
The B-58 was designed to fly at high altitudes and supersonic speeds to avoid Soviet interceptors, but with the Soviet introduction of high-altitude surface-to-air missiles, the B-58 was forced to adopt a low-level penetration role that severely limited its range and strategic value. It was never used to deliver conventional bombs. The B-58 was substantially more expensive to operate than other bombers, such as the Boeing B-52 Stratofortress, and required more frequent aerial refueling. The B-58 also suffered from a high rate of accidental losses. These factors resulted in a relatively brief operational career of ten years. The B-58 was succeeded in its role by the smaller, swing-wing FB-111A.
The USAF chose Boeing's MX-1712 and Convair MX-1626 design studies to proceed to a phase 1 study. During this period, Convair took advantage of recent developments by General Electric and replaced the two large J53 engines with four smaller J79s optimized for supersonic flight. The recently formulated area rule was also applied to the design, resulting in aerodynamic reprofiling and an even more slender fuselage. Having been refined, Convair redesignated their renewed submission MX-1964.
In August 1952, Convair's design was judged superior. According to Gunston and Gilchrist, Boeing's submission was viewed as equally good, but their separate contract to produce the Boeing B-52 Stratofortress had undoubtedly influenced this competition. In December 1952, Convair was chosen to meet the new SAB-51 (Supersonic Aircraft Bomber) and SAR-51 (Supersonic Aircraft Reconnaissance) standards, the first general operational requirements for supersonic bombers. In February 1953, the USAF issued a contract for Convair's design, designated B-58 on 10 December 1952.
The B-58 program, unlike those for prior military aircraft, was the first weapon-system contract. Under this arrangement, Convair acted as the prime contractor responsible for all program elements, not just the aircraft. Convair was required to devise or subcontract everything associated with the aircraft's operation, from the engines to training manuals, spare components, and software, in excess of one million items. Early on, the contract was modified to build a pair of XB-58 prototypes, 11 YB-58A preproduction aircraft, and 31 mission pods including a free-fall bomb pod, a rocket-propelled controllable bomb pod, a reconnaissance pod, and an electronic reconnaissance pod
Ceiling
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The "Camel" may be regarded as the prototype of the Consolidated response to the USAAS's 1924 requirement for a new primary trainer. In the early summer of 1924.
On 1 August 1960, the B-58 was declared operational, nine months after the delivery of the first aircraft to the USAF.
Two SAC bomb wings operated the B-58 during its operational service - the 43rd Bombardment Wing (which later transitioned to the 43rd Airlift Wing), based at Carswell AFB.