WRIGHT R-1820

The 'Wright R-1820 Cyclone 9' was an American radial engine developed by Curtiss-Wright and widely used on 1930s through 1950s aircraft.

Contents

History

Variants

Specifications (R-1820-C9HC)

Applications

References

Related contents

History

The 'R-1820 Cyclone 9' represented a further development of the Wright P-2 engine dating back to 1925. Featuring a greater displacement and a host of improvements, the R-1820 entered production in 1931. The engine remained in production well into the 1950s.
The R-1820 was built under license by Lycoming, Pratt & Whitney Canada and also, during World War II, by the Studebaker Corporation. The Soviet Union had purchased a license for the design, designated 'M-25', and the Shvetsov OKB was formed to further develop the engine.
The R-1820 was at the heart of many famous aircraft including the early Douglas airliners (prototype DC-1, the DC-2, earliest civilian versions of the DC-3, and the limited-production DC-5), B-17 Flying Fortress and SBD Dauntless bombers, the early versions of the Polikarpov I-16 fighter (as M-25), and the Piasecki H-21 helicopter.
The R-1820 also found limited use in armored vehicles in two forms. The G-200 was a 9-cylinder gas-burning radial that developed 900 hp @ 2,300 rpm and powered the M6 Heavy Tank. The Wright RD-1820 was converted to a diesel by Caterpillar Inc. as the D-200 and produced 450 hp @ 2,000 rpm in the M4A6 Sherman.

Variants

★ 'R-1820-1' - 575 hp (429 kW)

★ 'R-1820-4' - 770 hp (574 kW)

★ 'R-1820-22' - 950 hp (708 kW)

★ 'R-1820-33' - 775 hp (578 kW)

★ 'R-1820-45' - 930 hp (694 kW)

★ 'R-1820-53' - 1,000 hp (750 kW)

★ 'R-1820-60' - 1,200 hp (895 kW)

★ 'R-1820-62' - 1,350 hp (1,007 kW)

★ 'R-1820-72W' - 1,425 hp (1,063 kW)

★ 'R-1820-80' - 700 hp (522 kW)

★ 'R-1820-86' - 1,425 hp (1,063 kW)

★ 'R-1820-97' - 1,200 hp (895 kW), turbosupercharged (gear-driven supercharger plus a turbocharger)

★ 'R-1820-103' - 1,425 hp (1,063 kW)

Specifications (R-1820-C9HC)

Applications

;:

★ Boeing B-17

★ Boeing C-75

★ Brewster F2A Buffalo

★ Curtiss SBC Helldiver

★ Curtiss SC Seahawk

★ Curtiss-Wright CW-21

★ Douglas A-33

★ Douglas B-18

★ Douglas DC-2

★ Douglas DC-3 (DST, G-102 and G-202)

★ Douglas DC-5

★ Douglas SBD Dauntless

★ Grumman AF Guardian

★ Grumman Albatross

★ Grumman J2F Duck

★ Grumman S-2 Tracker

★ Lockheed Lodestar

★ Lockheed Hudson

★ Martin B-10

★ North American O-47

★ North American P-64

★ North American T-28 Trojan

★ Piasecki H-21

★ Ryan Fireball

★ Sikorsky H-34 Chocktaw

References

★ Bridgman, L, (ed.) (1998) ''Jane's fighting aircraft of World War II.'' Crescent. ISBN 0-517-67964-7

★ The complete Encyclopedia of World Aircraft cover Editors: Paul Eden & Soph Moeng, (Amber Books Ltd. Bradley's Close, 74-77 White Lion Street, London, NI 9PF, 2002, ISBN 0-7607-3432-1), 1152 pp.

★ Aircraft Engines in Armored Vehicles

Related contents

'Related developments'

★ Wright Cyclone family

★ Wright R-1300 Cyclone 7

★ Wright R-2600 Cyclone 14

★ Wright R-3350 Cyclone 18 (Duplex Cyclone)

★ Shvetsov M-25
'Comparable engines'

★ Pratt & Whitney R-1830 Wasp