Vickers Vanguard

Vickers Vanguard. The Vickers Vanguard was a British four-engined turboprop airliner designed and produced by Vickers-Armstrongs during the late 1950s. Developed as a larger, more powerful successor to the highly successful Vickers Viscount, it was intended to meet the specific requirements of British European Airways for high-capacity, short- to medium-haul routes. Despite its advanced design and operational efficiency, the Vanguard's commercial success was limited by the rapid contemporary rise of jet airliners like the de Havilland Comet and Boeing 707.

Development and design

The Vanguard project originated from a British European Airways specification for a high-density airliner to serve heavily trafficked European routes. Vickers-Armstrongs based the design on the Vickers Viscount, but significantly enlarged it to accommodate up to 139 passengers in an all-economy configuration. The aircraft was powered by four Rolls-Royce Tyne turboprop engines, which were among the most powerful of their type and provided excellent fuel economy. The airframe featured a double-bubble fuselage cross-section, with a lower lobe for cargo, and was designed for high utilization with robust systems. Although it shared a general configuration with its predecessor, the Vanguard was essentially a new design, emphasizing structural strength and low operating costs per seat-mile over pure speed.

Operational history

The Vanguard entered service with British European Airways on its London to Paris route in December 1960. British European Airways became the primary operator, using the type extensively on its core European network and domestic United Kingdom services. A second customer, Trans-Canada Air Lines, also placed a significant order, operating its fleet on transcontinental routes across Canada. The Vanguard proved to be exceptionally reliable and economical on dense, short-haul sectors, earning a strong reputation for passenger comfort due to its quiet turboprop cabins. However, its market was quickly eroded by the introduction of faster jet aircraft, leading to early retirement from passenger service by most operators by the early 1970s. Many airframes were subsequently converted into freighters, known as the Merchantman, which enjoyed a long second career with British European Airways and other cargo airlines.

Operators

The major airline customers for the Vanguard were British European Airways and Trans-Canada Air Lines. British European Airways operated the largest fleet, using the aircraft extensively across its European network. Trans-Canada Air Lines utilized its Vanguards on major domestic routes and some services to the United States. Following the end of passenger service, the converted Merchantman freighter variant was operated by British European Airways' cargo division and several other carriers, including Air Bridge Carriers and Europe Aero Service. A small number of aircraft were also used by the Royal Air Force for transport duties. No Vanguards remain in active service today.

Accidents and incidents

The Vanguard's safety record involved several notable accidents. In 1965, British European Airways Flight 245 crashed during an approach to London Heathrow Airport in poor weather, resulting in fatalities. Another significant accident occurred in 1971, when a British European Airways Merchantman freighter crashed near London Luton Airport following an engine fire. The type was also involved in a fatal accident involving Trans-Canada Air Lines Flight 831, which crashed shortly after takeoff from Montreal in 1963. Despite these incidents, the Vanguard was not considered to have an exceptional accident rate for its era, and several hull-loss accidents occurred during its later freighter operations without loss of life.

Specifications (Vanguard)

* **Crew:** 3-4 * **Capacity:** 139 passengers (all economy) or 18,000 lb (8,200 kg) cargo (Merchantman) * **Length:** 122 ft 10 in (37.45 m) * **Wingspan:** 118 ft 7 in (36.15 m) * **Height:** 34 ft 11 in (10.64 m) * **Empty weight:** 82,500 lb (37,421 kg) * **Max takeoff weight:** 146,500 lb (66,451 kg) * **Powerplant:** 4 × Rolls-Royce Tyne Mk 512 turboprop engines, 5,545 shp (4,135 kW) each * **Maximum speed:** 425 mph (684 km/h, 369 kn) * **Cruise speed:** 410 mph (660 km/h, 360 kn) * **Range:** 2,920 mi (4,700 km, 2,540 nmi) * **Service ceiling:** 30,000 ft (9,100 m)

Category:Aircraft manufactured in the United Kingdom Category:Turboprop airliners Category:Vickers aircraft