, For required takeoff performance from short tropical dispersal bases, a jettisonable rocket booster engines pack was developed for the Valiant. It was this secretive division in which the early stages of the development of the Valiant took place, including the later assembly of the initial two prototypes. 543 Squadron photographed around 400,000 square miles (1,000,000 km2) of Rhodesia across an 11-week period. In 1962, in response to advances in Soviet Union surface-to-air missile (SAM) technology, the V-force fleet including the Valiant changed from high level flying to flying at low-level to avoid SAM attacks that they would have received if they were flying at high altitudes. 13 September 1957: Valiant B(PR)K1 WZ398 of. , The Valiant had a shoulder-mounted wing and four Rolls-Royce Avon RA.3 turbojet engines, each providing up to 6,500 pounds-force (29 kN) of thrust, installed in pairs in fireproof bays in each wing root. [N 5] The Egyptian Air Force had been effectively destroyed in a wider series of multinational attacks of which the Valiant bombing missions had been a part. The only result from the visit was Le May's insistence that the Valiant pilot side-by-side seating be incorporated in the B-52 instead of the tandem arrangement in the B-47 and prototype B-52. Vickers Valiant B1 (XD818) [@ RAF Cosford] As the first production B.1’s were being finished off, the B.2 prototype (WJ954) flew for the first time on the 4th of September 1953.  A drogue parachute was deemed unnecessary even operating from runways as short as 6,000 feet (1,800 m). 3 November 1961: Valiant B(PR)K1 WZ399 of. In addition to providing thrust for flight, the engines also provided bleed air for the pressurization, ice protection, and air conditioning systems. The tanker squadrons had the highest proportion of Cat A aircraft because their role had been mainly at high level. They were repainted in grey/green camouflage with normal markings, replacing their anti-flash white scheme.  The first five Valiants produced were completed to a pre-production standard, the first being WP199.  Vickers' submission had initially been rejected as not being as advanced as the Victor and the Vulcan, but Vickers' chief designer George Edwards lobbied the Air Ministry on the basis that it would be available much sooner than the competition, going so far as to promise that a flight-capable prototype would be flown by the end of 1951, that subsequent production aircraft would be flown prior to the end of 1953, and that serial deliveries would commence during early 1955. Cockpit sections surviving comprise XD816 at. The bomb bay was also in the lower half of the centre fuselage. A control panel at the radar navigator station in the cockpit was used to operate the HDU. The initial Valiant prototype (WB210) achieved first flight on May 18th, 1951 at just over two years since the Air Ministry contract was offered to Vickers. "The V-Bombers: Vickers Valiant, Part 2. , In February 1949, two prototypes of the Vickers 660 series were ordered. Brookes Valiant Units of the Cold War, pp. In many cases it had to be replaced by steel components. "The V-Bombers: Vickers Valiant, Part 1. , Data from Vickers Aircraft since 1908, Jet Bombers, Aircraft of comparable role, configuration, and era, The rapid development of aircraft during World War II led to a demand for very high strength aluminium alloy, especially for use in highly loaded tension and compression members.  Trials were performed with two underwing de Havilland Sprite boosters; these were ultimately deemed unnecessary when more powerful variants of the Avon engine became available. "Database: Vickers Valiant.  In conjunction with this ambition, Britain set about developing its own atomic weapons.  Vickers initially produced a six-engine jet bomber design proposal to meet Specification B.35/46; as rapid progress in the development of more powerful jet engines had been made, this was re-worked to a four-engine proposal in 1948. , In January 1947, the British Air Ministry issued Specification B.35/46 for an advanced jet bomber intended to carry nuclear weapons and to fly near the speed of sound at altitudes of 50,000 ft (15,000 m). One of the three prototypes was the B.2 version. , In October and November 1956 the Valiant was the first of the V-bombers to see combat, during the Anglo-French-Israeli Suez campaign. Barfield, Norman. The Vickers Valiant was a four jet high altitude strategic bomber and was the first, and most conservative in design, of the V-Bombers (the others being the Victor and the Vulcan).  Richards found that it would be advantageous to increase the sweep on the inboard section of the wing, a discovery which he later patented; the Valiant's wing had 37° sweepback for the inner third of the wing, which reduced to 21° at the tips. , A Smith Aerospace autopilot and instrument landing system (ILS) was installed along with various navigational aids, such as the Marconi Company-built Green Satin doppler radar, Gee radio navigation, Automatic Direction Finder (ADF), VOR/Distance Measuring Equipment (DME), and radar altimeters. It was designed for the early fission-based nuclear weapons and also the newer and larger thermonuclear hydrogen bombs. The aircraft's DC electrical generators were also driven by the engines.  After the Second World War, the policy of using heavy four-engined bombers for massed raids continued into the immediate postwar period; the Avro Lincoln, an updated version of the Avro Lancaster, became the RAF's standard bomber. We are open every day, apart from a few days over Christmas.  Provisions for additional equipment and sensors, such as side looking airborne radar, were also made.. I was the first electrician on the brand new XD820 delivered to 148 Squdren at RAF Marham in October 1956. Testing included engine shutdowns and re-lights, one of which caused a fire in the starboard wing; most of the crew managed to escape the aircraft safely, except for the co-pilot, who struck the tail after ejecting. ", Newsreel footage of Valiant following 1955 Speed Record, Footage and Description of the Valiant B2, https://en.wikipedia.org/w/index.php?title=Vickers_Valiant&oldid=987417494, Short description is different from Wikidata, Articles with unsourced statements from May 2011, Creative Commons Attribution-ShareAlike License. It was followed by the Vanguard, a passenger turboprop designed in 1959, and the Vickers VC10, a jet passenger aircraft in 1962, also used as a military transport and tanker by the RAF.  An order for 17 B.2 models was cancelled.  After this inspection, the aircraft were divided into three categories, Cat A aircraft continuing to fly, Cat B to fly to a repair base, and Cat C requiring repair before flying again.  All three axes of the flight controls had an artificial feel system, the pressure for which was provided via a ram-air inlet. It was undoubtedly the most capable strategic bomber ever built in Britain. ", "Powered Aircraft, Gliders & Aircraft Cockpit Sections. , With in-flight refuelling probes fitted to Valiants, Vulcans and Victors and Valiant tankers available to give fuel and extend the range of the aircraft being refuelled, the RAF Medium Bomber Force could go beyond "medium range", and the RAF had a long range capability.  Both of these aircraft were PR variants. , Although the Egyptians did not oppose the attacks and there were no Valiant combat losses, the results of the raids were reported as disappointing.  The brakes and steering gear were hydraulically powered, the hydraulic pumps being electrically driven. From 1956 until early 1966 the main Valiant force was used in the nuclear deterrence role in the confrontation between NATO and the Warsaw Pact powers.
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