Military Factory logo

Avro 566 Avenger

United Kingdom (1926)
Picture of Avro 566 Avenger Biplane Fighter Prototype Aircraft

The Avro 566 Avenger was a private venture attempt to produce a high-performance biplane fighter for service with the Royal Air Force - only a prototype was completed.


Detailing the development and operational history of the Avro 566 Avenger Biplane Fighter Prototype Aircraft.  Entry last updated on 5/22/2018. Authored by Staff Writer. Content ©www.MilitaryFactory.com

Developed along the lines of a private venture fighter for possible sale to the Royal Air Force (RAF), the Avro 566 "Avenger" promised excellent performance through a powerful engine and exceptional streamlining of its shape. The type existed in a biplane form and recorded a first-flight on June 26th, 1926. Its design was attributed to Roy Chadwick, an aeronautical engineer who lent his talents to the creation of the Avro Manchester and Avro Lancaster heavy bombers of World War 2 fame and the Avro Vulcan jet-powered bomber of Cold War fame.

The Avenger exhibited an overall length of 7.7 meters, a wingspan of 9.75 meters, and a height of 3 meters. It sat a single crewman in an open-air cockpit under and behind the upper wing assembly. The mainplanes were of unequal span - the upper section being wider than the lower - and used N-type struts creating a single-bay wing arrangement. The wheeled undercarriage was fixed during flight and the overall design approach of the aircraft was very consistent with the post-World War 1 period (known as the "Interwar period"). Construction was largely of wood with fabric skinning and power to the aircraft was through a Napier Lion VIII engine of 525 horsepower driving a two-bladed propeller at the nose. No armament was fitted to the prototype though it can be assumed that 2 x 0.303 machine guns would have been installed, synchronized to fire through the spinning propeller blades.

As completed, the Avenger held a maximum speed of 180 miles per hour and could cruise at 130 miles per hour.

Despite its promise, the Avenger failed to sell itself to RAF authorities (mainly due to the unpopular Lion engine in play) so it was decided to convert the high performance platform to an aerial racer. The wing mainplanes were revised to become equal-span assemblies and I-type struts were fitted for support. Ailerons were added to both upper and lower wing structures. The original engine installation was now superseded by the Napier Lion IX series engine of 553 horsepower and the changes were enough to warrant the new designation of Avro 567 "Avenger II".

Beyond this conversion, the aircraft was destined to never become anything greater - the single example was eventually broken up in 1931 and used as an engineering training tool.

Any available statistics for the Avro 566 Avenger Biplane Fighter Prototype Aircraft are showcased in the areas immediately below. Categories include basic specifications covering country-of-origin, operational status, manufacture(s) and total quantitative production. Other qualities showcased are related to structural values (namely dimensions), installed power and standard day performance figures, installed or proposed armament and mission equipment (if any), global users (from A-to-Z) and series model variants (if any).






Our Data Modules allow for quick visual reference when comparing a single entry against contemporary designs. Areas covered include general ratings, speed assessments, and relative ranges based on distances between major cities.

Image of collection of graph types

Relative Maximum Speed Rating
Hi: 200mph
Lo: 100mph
    This entry's maximum listed speed (180mph).

    Graph average of 150 miles-per-hour.
Aviation Era
Pie graph section
Pie graph section
Pie graph section
Pie graph section
Pie graph section
Useful in showcasing the era cross-over of particular aircraft/aerospace designs.
Unit Production Comparison
Comm. Market HI*: 44,000 units
Military Market HI**: 36,183 units
1
1


  * Commercial Market High belongs to Cessna 172.

  ** Military Market High belongs to Ilyushin Il-2.


Altitude Visualization
Small airplane graphic
  Compare this entry against other aircraft using our Comparison Tool  
National Flag Graphic
Origin: United Kingdom
Year: 1926
Type: Biplane Fighter Prototype Aircraft
Manufacturer(s): A.V. Roe (Avro) - United Kingdom
Production: 1
Status: Cancelled
Global Operators:
United Kingdom (cancelled)
Historical Commitments / Honors:

Military lapel ribbon for Operation Allied Force
Military lapel ribbon for the Arab-Israeli War
Military lapel ribbon for the Battle of Britain
Military lapel ribbon for the Battle of Midway
Military lapel ribbon for the Berlin Airlift
Military lapel ribbon for the Chaco War
Military lapel ribbon for the Cold War
Military lapel ribbon for the Cuban Missile Crisis
Military lapel ribbon for the Falklands War
Military lapel ribbon for the French-Indochina War
Military lapel ribbon for the Golden Age of Flight
Military lapel ribbon for the 1991 Gulf War
Military lapel ribbon for the Indo-Pak Wars
Military lapel ribbon for the Iran-Iraq War
Military lapel ribbon for the Korean War
Military lapel ribbon for the 1982 Lebanon War
Military lapel ribbon for the Malayan Emergency
Military lapel ribbon for the attack on Pearl Harbor
Military lapel ribbon for the Six Day War
Military lapel ribbon for the Soviet-Afghan War
Military lapel ribbon for the Spanish Civil War
Military lapel ribbon for the Suez Crisis
Military lapel ribbon for the Vietnam War
Military lapel ribbon for Warsaw Pact of the Cold War-era
Military lapel ribbon for the WASP (WW2)
Military lapel ribbon for the World War 1
Military lapel ribbon for the World War 2
Military lapel ribbon for the Yom Kippur
* Ribbons not necessarily indicative of actual historical campaign ribbons. Ribbons are clickable to their respective campaigns/operations.
Measurements and Weights icon
Structural - Crew, Dimensions, and Weights:
Unless otherwise noted the presented statistics below pertain to the Avro 566 Avenger model. Common measurements, and their respective conversions, are shown when possible.

Operational
CREW


Personnel
1


Dimension
LENGTH


Feet
25.49 ft


Meters
7.77 m


Dimension
WIDTH


Feet
31.99 ft


Meters
9.75 m


Dimension
HEIGHT


Feet
10.24 ft


Meters
3.12 m


Weight
EMPTY


Pounds
2,370 lb


Kilograms
1,075 kg


Weight
LOADED


Pounds
3,219 lb


Kilograms
1,460 kg

Engine icon
Installed Power - Standard Day Performance:
Avenger I: 1 x Napier Lion VIII engine developing 525 horsepower and driving two-bladed propeller at the nose.

Performance
SPEED


Miles-per-Hour
180 mph


Kilometers-per-Hour
290 kph


Knots
157 kts


Performance
CEILING


Feet
21,982 ft


Meters
6,700 m


Miles
4.16 mi


Performance
CLIMB RATE


Feet-per-Minute
2,100 ft/min


Meters-per-Minute
640 m/min

Armament - Hardpoints (0):

None Fitted. Assumed armament of 2 x 0.303 machine guns synchronized to fire through the spinning propeller blades.
Variants: Series Model Variants
• 566 Avenger ("Avenger I") - Original prototype design; unequal-span wing mainplanes; N-type struts; Napier Lion VIII engine.
• 567 Avenger II - Revised prototype as aerial racer; equal-span wing mainplanes; I-type struts; Napier Lion IX engine.