V bomber
The "V bombers" were the Royal Air Force aircraft during the 1950s and 1960s that comprised the United Kingdom's strategic nuclear strike force known officially as the V force or Bomber Command Main Force. The three models of strategic bomber, known collectively as the V class, were the Vickers Valiant, which first flew in 1951 and entered service in 1955; the Avro Vulcan, which first flew in 1952 and entered service in 1956; and the Handley Page Victor, which first flew in 1952 and entered service in 1957. The V Bomber force reached its peak in June 1964 with 50 Valiants, 70 Vulcans and 39 Victors in service.
When it became clear that the Soviet Union's surface-to-air missiles like the S-75 Dvina could bring down high-flying aircraft, the V bomber force changed to low-level attack methods. Additionally the Blue Steel missile profile was changed to one of low level penetration and release. This reduced its range significantly. It was then planned to move to the much longer-ranged Skybolt air-launched ballistic missile. When the US cancelled Skybolt, the survivability of the V force was highly questionable. This led to the Royal Navy taking over the nuclear deterrent role from 1968, using UGM-27 Polaris submarine launched ballistic missiles launched from nuclear submarines. The tactical role passed to smaller aircraft like the SEPECAT Jaguar and Panavia Tornado.
The V bombers were also capable of dropping conventional weapons, supported by a complex analogue computer system known as the Navigation and Bombing System that allowed accurate bombing even over very long ranges. The Valiants were used during the Suez Crisis as conventional bombers. Victors and Vulcans were deployed to the Malay Archipelago as a deterrent during the Indonesia–Malaysia confrontation but were not used in missions. The Vulcan is well-remembered for its conventional Black Buck bombing raids during the 1982 Falklands War. To support such missions, tanker aircraft versions of all three designs were developed. Reconnaissance versions were produced, and other modifications were also made during their lifetime.
The Valiants were removed from service in 1964 after problems with metal fatigue of their wings became apparent; a planned low-level variant did not progress beyond the prototype. Usage of all V bombers as weapons platforms, nuclear or conventional, ended in 1982.
Background
The Royal Air Force Bomber Command ended the Second World War with a policy of using heavy four-piston-engined bombers for massed raids, and remained committed to this policy in the immediate post-war period. The RAF adopted the Avro Lincoln, an updated version of the wartime Avro Lancaster, as its standard bomber for this purpose. Production of the Lincoln continued after the war, and eventually 450 were built. Although touted as a mighty bomber in 1945, it lacked the range to reach targets in the Soviet Union, and would be vulnerable to the new jet fighters that were then under development.Elements within the RAF and the government sought to adopt the new nuclear weaponry and advances in aviation technology to introduce more potent and effective means of conducting warfare. In November 1944, the UK Chiefs of Staff had requested a report from Sir Henry Tizard on potential future means of warfare. Reporting without knowledge of the progress of Allied efforts to produce an atomic bomb, in July 1945 the Tizard Committee urged the encouragement of large-scale atomic energy research. It foresaw the devastating effects of atomic weapons and envisaged high-flying jet bombers cruising at at. It was thought that potential aggressors might be deterred by the knowledge that Britain would retaliate with atomic weapons if attacked.
Even at the time, there were those who could see that guided missiles would eventually make such aircraft vulnerable, but development of such missiles was proving difficult, and fast and high-flying jet bombers were likely to serve for years before there was a need for something better. Massed bombers were unnecessary if a single bomber could destroy an entire city or military installation with a nuclear weapon. It would have to be a large bomber, since the first generation of nuclear weapons were big and heavy. Such a large and advanced bomber would be expensive on a per-unit basis, as it would be produced in small quantities.
During the early part of the Second World War, Britain had a nuclear weapons project, codenamed Tube Alloys, which the 1943 Quebec Agreement merged with the American Manhattan Project. The British government trusted that the United States would continue to share nuclear technology, which it regarded as a joint discovery, after the war, but the United States Atomic Energy Act of 1946 ended technical co-operation. The British government saw this as a resurgence of United States isolationism, as had occurred after the First World War, and dreaded the possibility that Britain might have to fight an aggressor alone. It also feared that Britain might lose its great power status and its influence in world affairs. It therefore restarted its own nuclear weapons development effort, which was now codenamed High Explosive Research. The first British atomic bomb was tested in Operation Hurricane on 3 October 1952.
Development
In November 1946, the Air Ministry issued an operational requirement for an advanced jet bomber capable of carrying a bomb to a target from a base anywhere in the world with a cruising speed of and at an altitude of between. The bomb weight arose from an earlier operational requirement for an atomic bomb, which specified a maximum weight of. The speed and altitude requirements were based on what was thought necessary to penetrate enemy air defences. The aircraft itself was to weigh no more than. The Ministry of Supply baulked, and initially refused to accept OR230. Calculations showed that such an aircraft would require a runway long. Bomber Command's runways were built to handle the Lancaster, and extending them would be an expensive undertaking, involving not only additional construction, but land acquisition and demolition works. OR230 would never be fulfilled, and was ultimately cancelled on 17 September 1952.The Operational Requirements Committee met to discuss OR230 on 17 December 1946. This committee was chaired by the Vice-Chief of the Air Staff, Air Marshal Sir William Dickson, with Stuart Scott-Hall, the Principal Director of Technical Development representing the Ministry of Supply. The result was a new Operational Requirement on 7 January 1947. This was much the same as OR230, but the range was cut to, and the weight reduced to. OR229 formed the basis of an Air Ministry specification, B.35/46. A request for designs went to most of the United Kingdom's major aircraft manufacturers: Handley Page, Armstrong Whitworth, Avro, Bristol, Short Brothers and English Electric.
On 30 April 1947, Armstrong Whitworth, Avro, English Electric and Handley Page were invited to submit formal design tenders. A tender design conference was held on 28 July 1947, and decided to order the design submitted by Avro, along with a small flying model to test its delta wing design. The conference also decided to investigate the crescent wing concept as insurance against the favoured delta wing design being a failure. The Handley Page and Armstrong Whitworth designs were both considered. The Ministry of Supply gave financial cover in the form of an Intention to Proceed order to Avro in November 1947. An advisory committee selected the Handley Page design on 23 December 1947, and it too was given an ITP.
The 17 December 1946 meeting that came up with OR230 also decided to solicit bids for a more conservative design that could be put into service more quickly, and could act as further insurance against the failure of both of the more advanced designs. This was expressed in another operational requirement, from which an Air Ministry specification, B.14/46, was generated, which was issued on 11 August 1947. This had lower cruising altitude and speed requirements than B.35/46, but was otherwise identical. A design was put forward by Shorts, which was given an ITP in November 1947. The result was an extremely conservative design with straight wings, the Short Sperrin, which was in practice little more than a jet-powered Lincoln.
Meanwhile, Vickers-Armstrong had produced a swept wing design, the Vickers 660. This had been rejected because it did not meet the B.35/46 specification; but the estimated performance of the Sperrin caused officials at the Air Ministry to take another look. A new specification, B.9/48, was drawn up, based on the Vickers-Armstrong design, which was issued on 19 July 1948. An ITP was given to Vickers-Armstrong in April 1948, followed by a contract for two prototypes in February 1949, whereas Shorts was only awarded a contract for two prototypes in February 1949. The first prototype Vickers 660 flew on 18 May 1951, three months before the first prototype Sperrin, which first flew on 10 August 1951. No longer required, the Sperrin was cancelled; only the two prototypes were built.
Vickers-Armstrong named its aircraft the Vickers Valiant. Hitherto, bombers had been named after British or Commonwealth cities, but in October 1952 the Air Ministry decided to adopt alliterate names, with the other designs becoming the Avro Vulcan and the Handley-Page Victor. Henceforth, the three would be known as the V bombers. While more expensive than the approach of building one bomber design per category, the RAF insisted on having choice. Air Chief Marshal Sir John Slessor believed that had the air force been forced to choose among the three British bombers under development in the late 1930s—the Avro Manchester, Short Stirling, and Handley Page Halifax—it would have chosen the wrong one.
As a stop gap, the British announced on 27 January 1950 that it had agreed to acquire Boeing B-29 Superfortress bombers from the United States free under the recently passed American Mutual Defense Assistance Act. This allowed the Air Ministry to drop the development of the Sperrin. The B-29 served in the RAF under the name of the Washington B1. The RAF received its first Washington on 22 March 1950, and the eighty-seventh was delivered in June 1952. Like the Lincoln, it was a piston-engine aircraft, and while it did have the range to reach the Soviet Union from British bases, it was not nuclear-capable. The RAF planned to use them against Soviet bomber bases. The Washingtons suffered from maintenance problems due to a lack of spare parts, and most were returned to the US between July 1953 and July 1954; four remained in service until 1958. Their role was assumed by the new jet-propelled English Electric Canberra bomber.