Bristol Superfreighter

The Bristol Type 170 Superfreighter Mk 32 was a larger, stretched version of the Bristol Freighter designed for Silver City Airways for use on the short air ferry routes to France.

Type 170 Series 32 Superfreighter
A Bristol Superfreighter of Silver City Airways at Southampton Airport in 1954
Role Cargo aircraft
Passenger aircraft
Manufacturer Bristol Aeroplane Company
First flight 16 January 1953
Introduction 1953
Status Retired
Primary user Silver City Airways
British United Air Ferries
British United Airways
Developed from Bristol Freighter

Production and operation

The first Superfreighters, with a longer - 42 ft 3 in (12.88 m) - hold than the earlier Mark 31, were delivered to Silver City Airways in spring 1953 and were used on cross-channel services to Europe. One example was converted to a 60-seat all-passenger "Super Wayfarer".[1]

The Mark 32 could carry 20 passengers instead of 12 in the smaller Mark 31 Freighter, and three cars instead of two in its air ferry role.[2]

The Superfreighter was distinguishable from the earlier Freighter by having a longer nose, in which the extra car was carried, and a fin fillet as well as rounded wingtips.

A British United Air Ferries Superfreighter appears in the 1966 comedy film That Riviera Touch as the means by which Morecambe and Wise travel abroad with their car. The aircraft also appears in the 1965 film "Hysteria".

Operators

Specifications (Freighter Mk 32)
A British United Air Ferries Superfreighter in 1966

Data from Jane's all the World's Aircraft 1953–54[3]

General characteristics

  • Crew: 3
  • Capacity: 22,300 cu ft (630 m3) cargo hold / 13,659 lb (6,196 kg) (3 crew, 20 pax plus cars)
  • Length: 73 ft 6 in (22.40 m)
  • Wingspan: 108 ft 0 in (32.92 m)
  • Height: 25 ft (7.6 m) [4]
  • Wing area: 1,487 sq ft (138.1 m2)
  • Airfoil: RAF 28 (modified)[5]
  • Empty weight: 29,435 lb (13,351 kg)
  • Gross weight: 44,000 lb (19,958 kg)
  • Fuel capacity: 1,170 imp gal (1,410 US gal; 5,300 l) total (2 x 350 imp gal (420 US gal; 1,600 l) + 2 x 135 imp gal (162 US gal; 610 l) + 2 x 100 imp gal (120 US gal; 450 l)
  • Powerplant: 2 × Bristol Hercules 734 14-cylinder air-cooled radial piston engines, 2,000 hp (1,500 kW) each
  • Propellers: 4-bladed de Havilland constant-speed fully-feathering metal propellers, 14 ft (4.3 m) diameter

Performance

  • Maximum speed: 225 mph (362 km/h, 196 kn) at 3,000 ft (910 m)
  • Cruise speed: 164 mph (264 km/h, 143 kn) recommended, at 5,000 ft (1,500 m)
  • Range: 820 mi (1,320 km, 710 nmi) with 12,000 lb (5,400 kg) payload
  • Service ceiling: 23,000 ft (7,000 m) at max. continuous power and 38,000 lb (17,000 kg)
  • Single-engined ceiling: 12,900 ft (3,900 m) at 38,000 lb (17,000 kg) with emergency climb power
  • Rate of climb: 250 ft/min (1.3 m/s) On one engine at fully loaded weight
  • Time to altitude: 10,000 ft (3,000 m) in 10 minutes at max. continuous power
  • Power/mass: 11 lb/hp (6.7 kg/kW)
  • Take-off distance to 50 ft (15 m): 2,500 ft (760 m) in a 5 mph (4.3 kn; 8.0 km/h) wind
  • Landing distance from 50 ft (15 m): 2,300 ft (700 m) in a 5 mph (4.3 kn; 8.0 km/h) wind

References
  1. Jackson, A. J. (1973). British Civil Aviation since 1919 Volume 1 (2nd ed.). London: Putnam. pp. 252–259. ISBN 978-0-370-10006-7.
  2. Windsor, H.H. Jr. (September 1954). "British Air Ferry takes automobiles across the English Channel". Popular Mechanics. Vol. 102 no. 3. Hearst Magazines. p. 94.
  3. Bridgman, Leonard, ed. (1953). Jane's all the World's Aircraft 1953–54. London: Sampson Low, Marston & Company, Ltd. pp. 55–57.
  4. Barnes, C.H. (1964). Bristol Aircraft since 1910 (1st ed.). London: Putnam & Company Ltd. pp. 330–343.
  5. "UIUC Airfoil Data Site". m-selig.ae.illinois.edu. Retrieved 29 March 2019.

Further reading
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