Vickers VC10

Design and development

Background

Although privately owned, Britain's aviation industry had been government-managed in practice, particularly during the Second World War. Design and manufacture of transport aircraft had been abandoned to concentrate on production of combat aircraft with Britain's transport aircraft needs being met by the provision of US aircraft through Lend-Lease. In 1943, the Brabazon Committee introduced command economy-style principles into the industry, specifying a number of different types of airliners that would be required for the post-war years, though it assumed that US dominance in transport aircraft would translate into leadership in long-range airliners and conceded in principle that the industry might have to cede the long-range market to US makers.

During the 1950s, the government required the aviation industry to consolidate: in consequence only two engine makers were left by 1959: Rolls-Royce and Bristol Siddeley. In 1960, the British Aircraft Corporation (BAC) encompassed Vickers, Bristol and English Electric's aviation interests, whilst Hawker Siddeley built on de Havilland's heavy aircraft experience and Westland consolidated helicopter manufacture. The British government also controlled route-licensing for private airlines and also oversaw the newly established publicly owned British Overseas Airways Corporation (BOAC) long-range and British European Airways (BEA) short and medium-range airlines.

In 1951, the Ministry of Supply asked Vickers-Armstrongs to consider a military troop/freight development of the Valiant V bomber with trans-Atlantic range as a successor to the de Havilland Comet. The concept interested BOAC, who entered into discussion with Vickers and the RAF. In October 1952, Vickers were contracted to build a prototype which they designated the Type 1000 (Vickers V-1000), followed in June 1954 by a production order for six aircraft for the RAF. The planned civil airliner was known as the VC7 (the seventh Vickers civil design). Development was prolonged by the need to meet the RAF's requirements for short take-off and a self-loading capability. Work started on the prototype but by 1955 the aircraft's increased weight required a more powerful engine, causing BOAC to question the engine development cycle. In 1955, the government cancelled the RAF order in a round of defence cuts. Vickers and the Ministry of Supply hoped that BOAC would still be interested in the VC7 but they were reluctant to support the production of another British aircraft following delays in the Britannia programme and the crashes involving the de Havilland Comet.

Concept

Though BOAC had ordered modified Comet 4s, it viewed the type as an intermediate rather than a long term type. In 1956, BOAC ordered 15 Boeing 707s. These were oversized and underpowered for BOAC's medium-range Empire (MRE) African and Asian routes, which involved destinations with "hot and high" airports that reduced aircraft performance, notably between Karachi and Singapore, and could not lift a full load from high-altitude airports like Kano or Nairobi. Several companies proposed a suitable replacement. De Havilland offered the DH.118 while Handley Page proposed the HP.97, based on their V bomber, the Victor. After carefully considering the routes, Vickers offered the VC10. Crucially, Vickers was the only firm willing to launch its design as a private venture, instead of relying on government financing.

The VC10 was a new design but used some production ideas and techniques, as well as the Conway engines, developed for the V.1000 and VC7. It had a generous wing equipped with wide chord Fowler flaps and full span leading edge slats for good take-off and climb performance; its rear engines gave an efficient clean wing and reduced cabin noise. The engines were also further from the runway surface than an underwing design, an important factor in operations from rough runways such as those common in Africa; wide, low-pressure tyres were also adopted with this same concern in mind. The VC10 was capable of landing and taking off at lower speeds than the rival 707 and its engines could produce considerably more thrust, providing good 'hot and high' performance, and was considered to be a safer aircraft.

The onboard avionics and flight-deck technology were extremely advanced, a quadruplicated automatic flight control system (a "super autopilot") was intended to enable fully automatic zero-visibility landings (though the autoland system did not work smoothly and finally was removed from the Super VC10s.). Capacity was up to 135 passengers in a two-class configuration. Vickers designer Sir George Edwards is said to have stated that this plane was the sole viable option unless he were to reinvent the 707 and, despite misgivings on operating cost, BOAC ordered 25 aircraft. Vickers calculated that it would need to sell 80 VC10s at about £1.75 million each to break even so, apart from BOAC's 25, another 55 remained to be sold.