Avro Manchester
Avro · Heavy Bomber / Strategic Heavy Bombing · UK · WWII (1939–1945)
The Avro Manchester was the unsuccessful twin-engine predecessor of the legendary Avro Lancaster. Avro built 209 Manchesters between 1939 and November 1941. The aircraft used two Rolls-Royce Vulture 24-cylinder X-block engines — a complex powerplant that proved unreliable in service. Combat losses to Vulture engine failures were so high that the Manchester was withdrawn from front-line service in June 1942 after only 18 months of operations. Avro's redesign of the Manchester airframe with four Rolls-Royce Merlin engines produced the Lancaster — one of the most-iconic WWII bombers — making the Manchester the failed predecessor of a legend.
The Manchester used two Vulture engines (1,760 hp each). Maximum speed 265 mph; range 1,200 miles; service ceiling 19,200 ft. Bomb load: 10,350 lb. Defensive armament: 8 .303-cal Browning machine guns in nose, dorsal, and tail turrets. The aircraft entered RAF Bomber Command service in November 1940 and saw combat from February 1941. Combat losses were heavy — about 64 of 200 operational Manchesters were lost to all causes (32% loss rate), most to engine fires and structural failures rather than enemy action. The Vulture engine vibrated in flight, loosening connecting rods that failed catastrophically.
Manchester combat use included most early-1941 RAF Bomber Command operations against Germany. The aircraft participated in the September 1941 cruiser Prinz Eugen attack and several major raids on Berlin, Hamburg, and the Ruhr. The high loss rate led RAF Bomber Command to withdraw the Manchester from operations in June 1942; the surviving airframes were used for training and special-operations duty until 1943.
The Manchester's redemption came through Roy Chadwick's redesign. Chadwick replaced the two Vulture engines with four smaller, reliable Rolls-Royce Merlin XX engines — the same powerplant used on the Hurricane and early-Spitfires. The redesigned aircraft was renamed Lancaster. The Lancaster prototype first flew on 9 January 1941; production began in early 1942; about 7,377 Lancasters were built and the aircraft became RAF Bomber Command's most-effective heavy bomber of WWII. Avro's manufacturing of Lancasters used Manchester production tooling and many Manchester components — the two aircraft share most of their fuselage, wings, and tail surfaces.
For Kids — a shorter, friendlier version
The Avro Manchester was the failed two-engine bomber that became the legendary four-engine Avro Lancaster. About 209 Manchesters were built between 1939 and 1941. The plane used two new Rolls-Royce Vulture engines that turned out to be very unreliable.
The Vulture had 24 cylinders arranged in an X shape. Each engine made 1,760 horsepower, which was a lot for 1940. But the engines kept breaking down or catching fire. Many Manchester crews were lost when both Vulture engines failed during a mission.
The Royal Air Force pulled the Manchester from front-line service in June 1942 after just 18 months. The plane is longer than a basketball court. Its top speed was only 265 mph, slower than most other British bombers of its time.
Avro then redesigned the Manchester with four Rolls-Royce Merlin engines instead of two Vultures. That redesign became the Avro Lancaster — one of the most famous bombers in history. So the Manchester was a failure, but it led directly to a legend.
Fun Facts
- Only 209 Manchesters were built between 1939 and 1941.
- The plane used unreliable Rolls-Royce Vulture engines with 24 cylinders in an X shape.
- The Royal Air Force pulled the Manchester from front-line service after just 18 months.
- Avro redesigned the Manchester with four Merlin engines — the result became the Lancaster.
- The famous Avro Lancaster was a direct descendant of the failed Manchester.
- Its top speed was only 265 mph — slower than most other British bombers.
Kids’ Questions
Why did the Vulture engine fail so often?
The Vulture was a very complex engine — 24 cylinders arranged in an X shape. The complexity made it hard to build well and hard to keep cool in flight. Engines often overheated, broke connecting rods, or caught fire. Rolls-Royce gave up on the Vulture and focused on the simpler Merlin instead.
How did the Manchester become the Lancaster?
Avro's chief designer Roy Chadwick replaced the Manchester's two Vulture engines with four Rolls-Royce Merlins. He stretched the wing to fit the extra engines. The new four-engine design was renamed the Lancaster. It became one of the most successful and famous bombers of all time.
Variants
- Manchester Mk I
- Original 1940 production variant. 158 built. Vulture I engines. Suffered most of the engine-failure losses.
- Manchester Mk IA
- Improved variant with redesigned tail empennage. 51 built. Vulture II engines. Slightly better reliability but Vulture problems remained.
Notable Operators
- Royal Air Force Bomber Command
- Sole operator. Service November 1940 - June 1942. Squadrons 207, 61, 97, 83, 50, 49, 106, 408, 420 RAF Bomber Command. Withdrawn from front-line service in June 1942 due to engine-failure losses; survivors used for training through 1943.
Frequently Asked Questions
Why was the Manchester unsuccessful?
The Rolls-Royce Vulture engine was unreliable. The 24-cylinder X-block design vibrated in flight, loosening connecting rods that failed catastrophically. About 64 of 200 in-service Manchesters were lost to all causes (32% loss rate), most to engine failures rather than enemy action. The high loss rate forced RAF Bomber Command to withdraw the type from front-line service in June 1942.
Did the Manchester become the Lancaster?
Yes. Avro chief designer Roy Chadwick redesigned the Manchester airframe to use four reliable Rolls-Royce Merlin engines instead of two unreliable Vultures. The redesigned aircraft — using most of the Manchester's fuselage, wings, and tail — was renamed the Avro Lancaster. The Lancaster prototype first flew on 9 January 1941; about 7,377 production Lancasters were built. The Manchester is the failed predecessor of the most-iconic British heavy bomber of WWII.
How many Manchesters were built?
209 airframes between 1939 and November 1941. Production was at Avro's Manchester (158 airframes) and Chadderton (51 airframes) plants. Production ended in November 1941 because the Lancaster redesign was already in production and Avro could not justify continued Manchester output.
Did Manchesters drop bombs on Germany?
Yes — Manchesters flew about 1,269 RAF Bomber Command sorties between February 1941 and June 1942, dropping ~1,800 tonnes of bombs on German targets. The aircraft participated in major raids on Berlin, Hamburg, the Ruhr, the September 1941 attack on cruiser Prinz Eugen, and others. Combat record was operationally valuable but loss rates were ruinous.
Are any Manchesters preserved?
No complete airframe survives. The aircraft was retired in 1942 and scrapped en masse 1942-1944. The Royal Air Force Museum holds some Manchester components and a partial cockpit recovered from a 2000s archaeological project at a 1942 RAF Manchester crash site.
Sources
See Also
- Avro Lancaster — Direct successor (4-engine Merlin redesign of Manchester airframe)
- Short Stirling — Sister RAF Bomber Command 4-engine heavy bomber
- Handley Page Halifax — Sister RAF 4-engine heavy bomber
- Boeing B-17 Flying Fortress — U.S. four-engine bomber contemporary