https://en.wikipedia.org/wiki/Blackburn_Sydney
The Blackburn R.B.2 Sydney (serial N241) was a long-range maritime patrol flying
boat developed for the Royal Air Force in 1930, in response to Air Ministry
Specification R.5/27. It was a parasol-winged braced monoplane of typical flying
boat arrangement with triple tailfins and its three engines arranged on the
wing's leading edge. After evaluation, it was not ordered into production and no
further examples were built.
With development of the Sydney abandoned, construction of a cargo-carrying
variant powered by radial engines, the C.B.2 Nile was also ended.
Role
Patrol flying boat
Manufacturer
Blackburn
Designer
John Douglas Rennie
First flight
18 July 1930
Status
Prototype
Number built
1
Specifications (Sydney)
General characteristics
Crew: two pilots and three gunners
Length: 65 ft 7 in (19.99 m)
Wingspan: 100 ft (30.49 m)
Height: 20 ft 4 in (6.20 m)
Empty weight: 17,065 lb (7,741 kg)
Loaded weight: 23,350 lb (10,591 kg)
Performance
Maximum speed: 123 mph (107 kn, 198 km/h)
Cruise speed: 100 mph (87 kn, 161 km/h)
Service ceiling: 16,500 ft (5,030 m)
Rate of climb: 390 ft/min (2.0 m/s)
Endurance:7 hours 30 minutes
Armament
positions
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