Miles M.20 Technical Specifications
Service Year: 1940
Type: Low-Cost Monoplane Fighter Prototype
National Origin: United Kingdom
Manufacturer(s): Miles Aircraft - UK
Production Total: 2
Structural (Crew Space, Dimensions and Weights)
Operating Crew (Typical): 1
Overall Length: 30.68 feet (9.35 meters)
Overall Width: 34.58 feet (10.54 meters)
Overall Height: 12.50 feet (3.81 meters)
Weight (Empty): 5,919 lb (2,685 kg)
Weight (MTOW): 8,001 lb (3,629 kg)
Installed Power and Standard Day Performance
Propulsion: 1 x Rolls-Royce Merlin XX V12 liquid-cooled inline piston engine developing 1,260 horsepower.
Maximum Speed: 333 mph (536 kph; 289 knots)
Maximum Range: 920 miles (1,481 km)
Service Ceiling: 32,808 feet (10,000 meters; 6.21 miles)
Rate-of-Climb: 2,222 feet-per-minute (677 m/min)
Armament / Mission Payload
8 x 7.7mm Browning machine guns (four to a wing)
Centerline fuel drop tank (proposed).
Global Operators / Customers
United Kingdom (cancelled)
Model Variants (Including Prototypes)
M.20 - Base Series Designation; original design of 1939
M/20/2 - Revised M.20 form for RAF service; single example completed and flown.
M.20/4 - Disposable convoy protection fighter; single prototype completed and flown.