|Avro Type 566|
|First flight||26 June 1926|
|Primary user||RAF (intended)|
The Avro 566 Avenger was a prototype British fighter of the 1920s, designed and built by Avro. It was a single-seat, single-engine biplane of wood and fabric construction. Although it was a streamlined and advanced design, it never entered production.
The Avenger was designed as a private venture and Roy Chadwick penned a machine of great aerodynamic cleanliness for its time. As originally built, it was powered by a 525 hp (391 kW) Napier Lion VIII and it first flew on 26 June 1926, but no order was forthcoming; this was partly because by the time it was evaluated, the Air Ministry did not favour the Lion as a fighter engine.
In May 1928, the machine was modified as a racer, with equi-span wings of 28 ft (8.53 m) and revised struts and ailerons; it was fitted with a 553 hp (412 kW) Lion. The machine was subsequently redesignated Avro 567 Avenger II.
The Avenger ended its days as an instructional airframe.
Data from The Complete Book of Fighters
- Crew: 1
- Length: 25 ft 6 in (7.77 m)
- Wingspan: 32 ft (9.75 m)
- Height: 10 ft 3 in (3.12 m)
- Wing area: 244 ft²  (22.7 m²)
- Empty weight: 2,368 lb (1,074 kg)
- Loaded weight: 3,220 lb (1,460 kg)
- Powerplant: 1 × Napier Lion VIII or IX, 525/553 hp (391/412 kW)
- Maximum speed: 180 mph (290 km/h)
- Cruise speed: 130 mph (209 km/h)
- Service ceiling: 22,000 ft (6,700 m)
- Rate of climb: 2,100 ft/min (10.67 m/s)
- None fitted
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