Vickers Vanguard
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| Type 950 Vanguard | |
|---|---|
 Vickers Vanguard (G-APEC) at London Heathrow Airport in 1965. This aircraft was built in 1959 and was lost (broke up in flight) in 1971. |
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| Type | airliner |
| Manufacturer | Vickers-Armstrongs |
| Maiden flight | 20 January 1959 |
| Introduced | 1961 |
| Retired | 1996 |
| Primary users | British European Airways Trans-Canada Airlines |
| Number built | 43 |
| Developed from | Vickers Viscount |
- The name "Vanguard" had earlier been used on a civilian model of the Vickers Virginia bomber, other versions of the same aircraft being the Victoria and Valentia.
The Type 950 Vanguard was a British short/medium-range turboprop airliner introduced in 1959 by Vickers-Armstrongs, a development of their successful Viscount design with considerably more internal room. The Vanguard was introduced just before the first of the large jet-powered airliners, and was largely ignored by the market. Only 43 were built, ordered by Trans-Canada Airlines (TCA) and British European Airways (BEA). After only about 10 years service TCA experimentally converted one of theirs to a freighter configuration, calling it the Cargoliner. This was considered successful, and in the early 1970s most were converted to freighters, those from BEA becoming the Merchantman. These freighters remained in service for many years, with the last one (G-APEP) only retiring in 1996.
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[edit] Development
The aircraft was designed to a BEA requirement for a 100-seat aircraft to replace their Viscounts. The original Type 870 design was then modified when TCA expressed their interest in the design as well, and Vickers returned the updated Type 950 that filled both requirements.
The main difference between the Viscount and Vanguard was the construction of the fuselage. The Vanguard started with the original Viscount fuselage, but cut it off about 1/2 of the way up from the bottom, and replaced the top section with a larger-diameter fuselage to give it a double bubble cross-section (similar to the Boeing Stratocruiser). The result of the larger upper portion was a roomier interior, with increased cargo capacity below the floor.
With this larger, and heavier, fuselage came the need for a new engine to lift it. Rolls-Royce delivered their new Tyne design with a nominal 4,000 hp (3,000 kW) (as compared to the Viscount's Dart of about 1,700 hp (1,300 kW)).
This allowed for a much higher service ceiling and cruise speed, the Vanguard had a service ceiling almost twice that of the Viscount. The Vanguard was one of the fastest turboprops ever and was faster than the present day Saab 2000 or de Havilland Canada Dash 8.
The first Type 950 prototype flew on 20 January 1959, entering service in 1961. The last Merchantman (Vanguard) was retired by Hunting Cargo Airlines on 30 September 1996 and donated to Brooklands Museum on 17 October.
[edit] Accidents and Incidents
- On 27 October 1965 BEA Vickers Vanguard G-APEE flying from Edinburgh Airport to London Heathrow Airport, during a landing in poor visibility, attempted an overshoot but crashed on runway 28R. All on board died, 6 crew and 30 passengers.
- On 2 October 1971 BEA Vickers Vanguard G-APEC crashed near Aarsele in Belgium. 8 crew and 55 passengers died.
- On 10 April 1973 Invicta International Airways Vickers Vanguard G-AXOP crashed near Basel/Mulhouse Airport Switzerland. 4 crew and 104 passengers died.
- On 6 February 1989 Inter Cargo Service Vickers Vanguard F-GEJE crashed on takeoff from Marseille-Marignane Airport, France. 3 crew died, no passengers carried.
[edit] Variants
- Type 951: BEA, 20 ordered, 6 delivered. All in 127 seat mixed class configuration (18 first and 109 economy)
- Type 952: TCA, more powerful engine and stronger fuselage and wing for higher weights, 23 delivered
- Type 953: BEA, Same engines as 951, but the stronger airframe of the 952. Mostly operated as 135 seater all economy, but some configured as 127 mixed class the same as 951. 14 delivered replacing an order for 951's
- Type 953C Merchantman: 9 Conversions from Type 953
[edit] Operators
- European Aero Service
- Inter Cargo Service
- Air Viking
- Thor Cargo
- Angkasa Civil Air Transport
- Merpati Nusantara Airlines
- Lebanese Air Transport
- Air Trader
- Air Bridge Carriers
- Air Trader
- British European Airways
- Hunting Cargo Airlines
- Invicta Air Transport
[edit] Aircraft on display
- Type 953C Merchantman Superb (Registration G-APEP)] at the Brooklands Museum, Surrey, England.
[edit] Specifications (Type 952)
General characteristics
- Crew: 2-3
- Capacity: 139 passengers
- Length: 122 ft 10 in (37.50 m)
- Wingspan: 118 ft 7 in (36.10 m)
- Height: 34 ft 11 in (10.60 m)
- Wing area: 1,527 ft² (142 m²)
- Empty weight: 82,500 lb (37,421 kg)
- Loaded weight: 141,000 lb (63,977 kg)
- Powerplant: 4× Rolls-Royce Tyne RTy.11 Mk 512 turboprop, 5,545 hp (4,700 shp, 4,135 kW) each
Performance
- Maximum speed: 425 mph (684 km/h)
- Range: 1,830 miles (2,945 km)
- Service ceiling 30,000 ft [1] (9,145 m)
- Wing loading: 92 lb/ft² (450 kg/m²)
- Power/mass: 0.16 hp/lb (0.26 kW/kg)
[edit] References
- ^ Merchantman limited to 25,000 ft
[edit] External links
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