The Avro 684 was a proposed British high-altitude heavy bomber of the Second World War, based on Avro's Lancaster. Because heavy bombers were increasingly vulnerable, Avro completed a brochure in August 1941 for the Avro 684 Stratosphere Bomber, and Roy Chadwick chose to drop defensive armament and rely on altitude and speed. It was essentially a Lancaster with a pressure cabin in the nose and an unusual master-slave engine layout, in which four wing-mounted Rolls-Royce Merlin XX engines were supercharged by a fuselage-mounted slave Merlin 45 driving a large supercharger. At 60,000 lb all-up weight it was expected to reach a service ceiling of 42,000 ft, but design was suspended because of constant Lancaster development and work on the York transport.
Facts
Engine Class StatusDesign only (never built) 1 Top Speed (km/h) Maximum Mass (kg) Comparison
Body StyleAircraft (no road body style) 1 Connections
Exemplifies
Source Avro 684 (Wikipedia)
Of Make
Source Avro 684 (Wikipedia)
Sources
1. Avro 684 (Wikipedia)
Lead, kind of vehicle
was a proposed British high altitude heavy bomber
Design, brochure
completing a brochure in August 1941
Design, outcome
design of the 684 was suspended
Specifications, powerplant
Powerplant: 4 × Rolls-Royce Merlin XX V-12 liquid-cooled supercharged piston engines, 1,480 hp (1,100 kW) each at 3,000 rpm at 6,000 ft (1,829 m) without boost
Specifications, engine name
Powerplant: 4 × Rolls-Royce Merlin XX V-12 liquid-cooled supercharged piston engines, 1,480 hp (1,100 kW) each at 3,000 rpm at 6,000 ft (1,829 m) without boost
Specifications, maximum take-off weight
Max takeoff weight: 60,000 lb (27,216 kg)
Specifications, maximum speed
Maximum speed: 410 mph (660 km/h, 360 kn) at 42,500 ft (12,954 m)
Lead, maker
The Avro 684 was a proposed British high altitude heavy bomber of the Second World War, based on Avro's successful Lancaster.
Lead, nationality
was a proposed British high altitude heavy bomber
In Group: Bombers, Lead, kind of aircraft
The Avro 684 was a proposed British high altitude heavy bomber of the Second World War, based on Avro's successful Lancaster.
Exemplifies: Aviation, Lead, aircraft
The Avro 684 was a proposed British high altitude heavy bomber of the Second World War, based on Avro's successful Lancaster.
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