MILES M.20

MILES M.20 - Prototype low-cost fighter designed for rapid production, using many standard Miles Master components, conceived, built and flown (as M.20/2) in 65 days during 1940. Powered by 1,390 hp R-R Merlin XX and armed with eight 0.303-in (7.7-mm) Browning wing guns; first flown September 15, 1940 as U-9 and tested at A & AEE as AX834 in compliance with Specification F. 19/40. Later scrapped at Woodley. Second prototype (as M.20/4) to conform with Specification N.I Ml for naval fighter, first flown April 8, 1941 as U-0228 and later allotted serial DR616 for testing at A & AEE.

Data for Miles M.20/4: Max speed, 333 mph (536 kmlh) at 20,400 ft (6,218 m). Initial climb, 2,300 ft/min (11.7 m/sec). Time to 20,000 ft (6,100 m), 9.6 min. Service ceiling, 32,800ft (9,997 m). Max range, 200 mis (322 km). Empty weight, 5,870 Ib (2,663 kg). Gross weight, 8,000 Ib (3,629 kg). Span, 34 ft 7 in (10.54 m). Length, 30 ft 8 in (9.35 m). Wing area, 234 sq ft (21.74 m2).