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Blackburn B-20 ✕ Let L-610 ✕
Manufacturer Blackburn Aircraft Ayres Corp.
Description The Blackburn B-20 was an experimental aircraft, first flying in 1940, that attempted to drastically increase the performance of flying boat designs. The Let L-610 is a prototype aircraft for the Czech civil aircraft manufacturer Let Kunovice made in 1988–1997.
ICAO Code L610
First Flight 1940-03-26 1988-12-28
Designer John Douglas Rennie Antonín Píštěk
Type Prototype flying boat Airliner, transport aircraft
Length (m) 21.0312 21.72
Height (m) 7.62 7.6
Cockpit Crew 6 2
Max Seating 40
Max Speed (km/h) 492.4593 490
Cruise Speed (km/h) 438
Max Ceiling (m) 10250
Rate of Climb (m/s) 8.5
Armament provision for two turrets and other defensive positions; bomb-cells in centre section
Capacity Description 40 passengers / 5000 kg max payload
National Origin United Kingdom
Number Built 1 8
Powerplant Description 2 × Rolls-Royce Vulture X-24 liquid-cooled piston engines, 1283 kW (1720 hp) each 2 × General Electric CT7-9D turboprop engines, 1305 kW (1750 hp) each
Primary Users Royal Air Force Czech Republic
Status Prototype only; retired
Wikipedia Article (URL) en.wikipedia.org/wiki/Blackburn_B-20 en.wikipedia.org/wiki/Let_L-610
Flat Wing Span (m) 24.9936 25.6
Flat Wing Area (m²) 99.0346 56
Wake Category M
Aircraft Engine Rolls-Royce Vulture
Number of Engines 2 2