Editing Brabazon Committee (section)

==The aircraft==
*The '''Type I''' design was awarded directly to the [[Bristol Aeroplane Company]] for the [[Bristol Brabazon]], based on submissions they had made during the war for a "100 ton bomber"<ref name=Barnes324>Barnes, 1964, pp.324-325</ref> and judging that they had the capacity. However, [[Miles Aircraft]] proposed the Miles X-11, part of the ongoing [[Miles M.26]] development programme, but this innovative design was not seriously considered by the Ministry.<ref name=Brown257>Brown, 1970, pp.257-262</ref> One Brabazon was built and flown in 1949 with [[Bristol Centaurus]] radial engines but a planned Brabazon II with [[Bristol Proteus]] turboprop engines was not completed; the project folded in 1951 when, with BOAC having lost interest, issues with the first aircraft showed that a wing re-design was required for the Proteus.<ref name=Phipp67>Phipp, 2007, pp.67-69</ref>

*The '''Type IIA''' requirement was met by the Centaurus-powered [[Airspeed Ambassador]], and 20 were ordered for BEA. The first prototype flew in July 1947, and the type entered service with BEA in March 1952. Airspeed were by then wholly owned by de Havilland, who had no interest in developing the design further, although a Dart-powered version had been proposed.<ref name=Phipp75>Phipp, 2007, pp.75-77</ref>

*The '''Type IIB''' requirements were initially met by the Vickers [[Vickers Viscount|VC.2 Viceroy]], and the [[Armstrong Whitworth A.W.55 Apollo]]. The Type IIB requirement was developed as the [[Vickers Viscount]],<ref name=Phipp79/> with the Apollo failing to successfully compete with the Viscount.<ref name=Phipp81>Phipp, 2007, p.81</ref> The production Viscount was significantly larger than the Type II proposal as BEA wanted a larger and much more capable aircraft and the [[Rolls-Royce Dart]] engines were being developed to produce much more power than expected.<ref name="Andrews416">Andrews and Morgan 1988, pp. 416–427</ref> Consequently the updated Specification 21/49 was issued to represent the production Viscount which was ordered by BEA in 1950.<ref name="Andrews425">Andrews and Morgan 1988, p. 425</ref><ref name=Phipp79/> Ultimately 445 Viscounts were built.<ref name="Andrews and Morgan, p. 537">Andrews and Morgan 1988, p. 537</ref>

*The '''Type III''' called for a larger four-engined, medium-range aircraft for various multi-hop MRE routes serving the [[British Empire]]. This was intended initially to be the [[Avro]] 690 ''Type XXII'' with six [[Rolls-Royce Merlin]] engines which went through many specification changes and design evolutions to be the Avro 693 with four [[Rolls-Royce Avon]] jets. BOAC cancelled their order in April 1947 and the project was cancelled in July 1947. A new Specification 2/47 was issued for the MRE and this was developed as the [[Bristol Britannia]]. Unfortunately, this also suffered delays in development<ref name=Barnes347>Barnes, 1964, pp.347-348</ref> and did not enter service with BOAC until February 1957, despite having been ordered in November 1949.<ref name=Phipp105>Phipp, 2007, pp.105-109</ref>

*The '''Type IV''' became the world's first jet airliner, the [[de Havilland Comet]], the first prototype flying in July 1949. Initially successful, it suffered from well-publicized structural problems and failed to sell in great numbers.<ref name=Phipp93>Phipp, 2007, pp.93-97</ref><ref name=Jackson464>Jackson, 1987, pp.464-465</ref>

*The '''Type VA''' requirement was developed as the [[Miles Marathon]], first flying in May 1946. Following the collapse of Miles Aircraft, 40 were built by [[Handley Page]] for BEA who refused to take delivery, reducing their order for 30 by stages before eventually cancelling completely in 1952. The remainder were sold to airlines while the [[Royal Air Force]] were made to take 30 as navigation trainers.<ref name=Phipp101>Phipp, 2007, pp.101-104</ref><ref name=Brown301/>

*The '''Type VB''' requirement was met by the [[de Havilland Dove]] which had been commenced as a private venture in 1943.<ref name=Phipp98>Phipp, 2007, p.98</ref> The prototype first flew in September 1945 and it continued in production until 1967, with production of 544.<ref name=Jackson449>Jackson, 1987, p.449</ref> A larger version, the [[de Havilland Heron|Heron]], was developed and 149 were built between 1950 and 1967.<ref name=Jackson494>Jackson, 1987, p.494</ref>