Avro Manchester

Avro Manchester
Name	Avro Manchester
Type	Heavy bomber
Manufacturer	Avro
Designer	Roy Chadwick
First flight	25 July 1939
Introduced	November 1940
Retired	1942
Primary user	Royal Air Force
Number built	209
Developed into	Avro Lancaster

Avro Manchester. The Avro Manchester was a British heavy bomber developed during the Second World War by the Avro aircraft company. It was designed to meet the requirements of Air Ministry Specification P.13/36 for a twin-engine medium bomber capable of carrying heavy loads. Although the aircraft was plagued by the unreliability of its Rolls-Royce Vulture engines, its airframe proved fundamentally sound and served as the direct progenitor of the legendary Avro Lancaster.

Development and design

The Manchester originated from the Air Ministry's P.13/36 specification, which sought a new generation of bombers for the Royal Air Force. The design team at Avro, led by chief designer Roy Chadwick, initially proposed a twin-engine configuration powered by the new Rolls-Royce Vulture X-24 engine. The aircraft featured a distinctive triple-fin tail assembly and a large bomb bay designed to carry a significant payload. Key subcontractors included Metropolitan-Vickers, which built the majority of the airframes, and Fairey Aviation, which supplied the hydraulically-operated gun turrets. The prototype, built at Avro's factory at Woodford Aerodrome, first flew on 25 July 1939 with Avro chief test pilot H.A. "Sam" Brown at the controls. Despite promising performance, the Rolls-Royce Vulture engine proved chronically unreliable, suffering from persistent issues with its connecting rod bearings and cooling system.

Operational history

The Manchester entered service with No. 207 Squadron RAF in November 1940, undertaking its first operational mission against the German battleship Scharnhorst at Brest, France in February 1941. It subsequently flew with several squadrons of RAF Bomber Command, including No. 97 Squadron RAF and No. 106 Squadron RAF, participating in raids on targets such as Hamburg and Berlin. The aircraft's service was severely hampered by the poor serviceability of its engines, leading to high abort rates and numerous losses from mechanical failure. Following the Air Ministry's decision to withdraw the type, the last operational Manchester mission was flown by No. 408 Squadron RCAF against the German city of Bremen in June 1942. The remaining airframes were swiftly withdrawn from frontline service and relegated to training units or conversion into the four-engine Avro Lancaster.

Variants

The primary production version was the Manchester Mk I, of which 200 were built. A single Manchester Mk IA prototype was constructed, featuring an enlarged wing and four Rolls-Royce Merlin engines; this aircraft, serial number BT308, effectively became the prototype for the Avro Lancaster. Several standard Mk I airframes were later converted into the Manchester Mk II, which tested different engine installations, including the Napier Sabre and the Bristol Centaurus, though none entered production. A proposed transport variant, the Avro 685 York, shared the Manchester's basic wing design but featured a new fuselage.

Operators

The primary operator was the Royal Air Force, with squadrons such as No. 49 Squadron RAF, No. 61 Squadron RAF, and No. 83 Squadron RAF using the type. The Royal Canadian Air Force also operated Manchesters through No. 408 Squadron RCAF. Following their withdrawal from combat, many aircraft served with operational training units like No. 1660 Conversion Unit and No. 1654 Heavy Conversion Unit to train crews for the Avro Lancaster.

Specifications (Avro Manchester)

* Crew: 7 * Length: 70 ft (21.34 m) * Wingspan: 90 ft 1 in (27.46 m) * Powerplant: 2 × Rolls-Royce Vulture I X-24 piston engines * Maximum speed: 265 mph (426 km/h) at 17,000 ft (5,200 m) * Range: 1,630 mi (2,620 km) with a 8,100 lb (3,700 kg) bomb load * Service ceiling: 19,200 ft (5,850 m) * Armament: 8 × .303 in (7.7 mm) Browning machine guns in three turrets (nose, dorsal, tail) * Bomb load: Up to 10,350 lb (4,695 kg)

Accidents and incidents

The Manchester was involved in numerous accidents, predominantly due to engine failure. On 13 August 1941, Manchester L7319 of No. 207 Squadron RAF crashed near Scampton following a double engine failure, killing all crew. Another notable incident occurred on 16 April 1942, when Manchester L7430, also from No. 207 Squadron RAF, suffered an engine fire and crashed near Woodhall Spa during a training flight. A non-fatal but significant crash involved prototype BT308, the Manchester Mk IA, which made a forced landing at RAF Ringway in January 1941 due to engine trouble, though the airframe was repaired and continued testing. These incidents underscored the critical weaknesses of the Rolls-Royce Vulture powerplant.

Category:Avro aircraft Category:World War II British bombers