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Bristol B.170 Freighter

 

bristol170freighter

 

An immediate postwar civil aircraft project, Type 170, was a freighter derived from the Bombay military transport. The Type 170 was designed as a passenger, freight/passenger or all-freight transport aircraft to Specification 22/44 to carry a high payload on short-range flights. Because the campaign against the Japanese in Burma was still under way, a second Specification (G.9/45) was issued to provide a military transport capable of carrying into jungle areas a three-ton payload, including heavy trucks, guns, 28 stretchers and attendants, 36 fully equipped troops, 23 paratroops or other military loads. Large twin nose-doors facilitated loading and unloading of cargo.


The first of the two prototypes flew on 2 December 1945, by which time it was too late to see service during World War II. But surveys had shown that there was a genuine need for a similar aircraft for post-war commercial services and so the Freighter and Wayfarer were put into production, with nose-doors for loading freight or mixed passenger/freight-carrying and without nose-doors but seating for 36 passengers respectively.


Of the 214 Bristol Type 170 built between Decem-ber 1945 and March 1958, the the Mk 32 with a lengthened fuselage, was ordered by Silver City Airways. This version could accommodate two or three cars and 23 passengers.

 

Brist-170-04

 

Apart from the large numbers of commercial versions which were supplied for use in all parts of the world for a variety of duties, the Type 170 was also produced as a military transport and served with the RAAF, and RCAF (Mk 31 freighter version). A major user of the B-170 was the Pakistani Air Force, buying 38 in all.


The RNZAF also became one of the major users of the B-170, buying 12, and operating them in the tactical transport role in New Zealand and South East Asia and flying them with a single pilot, a navigator and a signaller; and eventually losing two in accidents before retiring of the remainder in 1977.


The biggest civil user was Safe Air who operated 14 in all with a maximum of 11 at any one time. The penultimate Bristol Freighter was built in early 1958 and delivered to Safe Air as ZK-BVM.

 

SAFE-01
Woodbourne, New Zealand, 1976

 

Gallery

 

Engines: 2 x Bristol Hercules 734, 1455kW
Take-off weight: 19967 kg / 44020 lb
Empty weight: 12415 kg / 27371 lb
Wingspan: 32.9 m / 107 ft 11 in
Length: 20.8 m / 68 ft 3 in
Height: 8.6 m / 28 ft 3 in
Wing area: 138.1 sq.m / 1486.49 sq ft
Max. speed: 360 km/h / 224 mph
Cruise speed: 254 km/h / 158 mph
Ceiling: 7000 m / 22950 ft
Range w/max.fuel: 3800 km / 2361 miles
Range w/max.payload: 1200 km / 746 miles
Crew: 2-3
Passengers: 44-56

Mk.31M

Engines: 2 x Bristol Hercules 735, 1980 hp.
Wing span: 108 ft.
Empty wt: 27,760 lb.
MAUW: 46,000 lbs.
Max speed: 230 mph @ 3,000 ft.

 

brist-170-ld

 

 


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