Английская Википедия:Avro 684
Шаблон:Use dmy dates Шаблон:Use British English
Шаблон:Infobox aircraft typeThe Avro 684 was a proposed British high altitude heavy bomber of the Second World War, based on Avro's successful Lancaster.[1]
Design
Due to the increasing vulnerability of contemporary heavy bombers, the need to fly at ever higher altitudes to avoid Anti-aircraft fire and fighter interception became paramount. Avro developed the Lancaster to fulfil the requirement for such a high altitude bomber completing a brochure in August 1941, for the Avro 684 Stratosphere Bomber. Chadwick decided to design a bomber that would dispense with defensive armament and rely on altitude and speed to evade enemy defences and was essentially a Lancaster with the nose section containing a pressure cabin (similar to the cabin from the Vickers Wellington B Mark X) and a large 'chin' mounted air intake and heat exchanger assembly. Pressure in the cabin was to be maintained at the Шаблон:Convert equivalent up to Шаблон:Convert.[1]
To achieve this performance, Chadwick used an engine arrangement called the 'Master-Slave' layout. The four wing-mounted Rolls-Royce Merlin XX engines driving four-bladed Шаблон:Convert diameter Rotol propellers, were to be supercharged by a fuselage-mounted slave Rolls-Royce Merlin 45 engine driving a large supercharger supplying pressurised air via an intercooler. The output from the slave engine was to be controlled to supply air at Шаблон:Convert equivalent pressure between Шаблон:Convert and Шаблон:Convert.[1]
Due to the pressure of constant developments to the Lancaster and design work on the York, the 684 was abandoned.[1]
Specifications (projected)
References
Bibliography
- Butler, Tony. British Secret Projects. Fighters & Bombers 1935 - 1950. Hickney, England: Midland Publishing. 2004 Шаблон:ISBN.
- Holmes, Harry. Avro Lancaster. The Definitive Record 2nd Edition. Shrewsbury, UK: Airlife Publishing Ltd, 2001. Шаблон:ISBN.