Wright R-1820

From Wikipedia, the free encyclopedia - View original article

R-1820
Curtiss-Wright R-1820 Cyclone Radial Engine
TypeRadial engine
National originUnited States
ManufacturerWright Aeronautical
First run1930's
Major applicationsB-17 Flying Fortress
VariantsShvetsov M-25
Developed intoWright R-2600
Wright R-3350
 
Jump to: navigation, search
R-1820
Curtiss-Wright R-1820 Cyclone Radial Engine
TypeRadial engine
National originUnited States
ManufacturerWright Aeronautical
First run1930's
Major applicationsB-17 Flying Fortress
VariantsShvetsov M-25
Developed intoWright R-2600
Wright R-3350

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

Design and development[edit]

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, and the Shvetsov OKB was formed to produce the engine as the M-25. In Spain the R-1820 was license-built as the Hispano-Suiza 9V or Hispano-Wright 9V.[1]

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 nine-cylinder gas-burning radial that developed 900 hp (670 kW) @ 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 (340 kW) @ 2,000 rpm in the M4A6 Sherman.

Variants[edit]

Unit numbers ending in/with W indicate engines fitted with water-methanol emergency power boost system.

R-1820-04
700 hp (522 kW)
R-1820-1
575 hp (429 kW)
R-1820-4
770 hp (574 kW)
R-1820-19
675 hp (503 kW)
R-1820-22
950 hp (708 kW)
R-1820-25
675 hp (503 kW) , 750 hp (559 kW), 775 hp (578 kW)
R-1820-32
1,000 hp (750 kW)
XR-1820-32
800 hp (596 kW)
R-1820-33
775 hp (578 kW)
R-1820-34
940 hp (701 kW) , 950 hp (708 kW)
R-1820-34A
1,200 hp (895 kW)
R-1820-40
1,100 hp (820 kW), 1,200 hp (895 kW)
R-1820-41
850 hp (634 kW)
R-1820-45
800 hp (596 kW) , 930 hp (694 kW)
R-1820-50
850 hp (634 kW)
R-1820-52
1,000 hp (750 kW)
R-1820-53
930 hp (694 kW), 1,000 hp (750 kW)
R-1820-56
1,200 hp (895 kW), 1,350 hp (1,007 kW)
R-1820-57
1,060 hp (790 kW)
R-1820-60
1,200 hp (895 kW)
R-1820-62
1,350 hp (1,007 kW)
R-1820-66
1,200 hp (895 kW), 1,350 hp (1,007 kW)
R-1820-72W
1,350 hp (1,007 kW) , 1,425 hp (1,063 kW)
R-1820-74W
1,500 hp (1,118 kW)
R-1820-76A,B,C,D
1,425 hp (1,063 kW)
R-1820-78
700 hp (522 kW)
R-1820-80
700 hp (522 kW), 1,535 hp (1,145 kW)
R-1820-82WA
1,525 hp (1,137 kW)
R-1820-86
1,425 hp (1,063 kW)
R-1820-97
1,200 hp (895 kW), Fitted with turbosupercharger
R-1820-103
1,425 hp (1,063 kW)
SGR-1820-F3
710 hp (529 kW) , 720 hp (537 kW)
SGR-1820-F2
720 hp (537 kW)
R-1820-F53
770 hp (574 kW)
R-1820-F56
790 hp (589 kW)
GR-1820-G2
1,000 hp (750 kW)
R-1820-G3
840 hp (626 kW)
R-1820-G5
950 hp (708 kW)
R-1820-G101
1,100 hp (820 kW)
R-1820-G102
775 hp (578 kW)
GR-1820-G102A
1,100 hp (820 kW)
R-1820-G102A
1,100 hp (820 kW)
R-1820-G102A
1,100 hp (820 kW)
R-1820-G202A
1,200 hp (895 kW)
R-1820-G103
1,000 hp (750 kW)
R-1820-G105
1,000 hp (750 kW)
R-1820-G205A
1,200 hp (895 kW)

Hispano-Suiza 9V[edit]

Hispano-Suiza 9V[2]
Licence built R-1820
Hispano-Suiza 9Vb
Hispano-Suiza 9Vbr[2]
variant of the 9V with reduction gear
Hispano-Suiza 9Vbrs
variant of the 9Vb with reduction gear and supercharger
Hispano-Suiza 9Vbs[2]
variant of the 9Vb with supercharger
Hispano-Suiza 9Vd[2]
variant of the 9V

Applications[edit]

Vehicles[edit]

Engines on display[edit]

Preserved Wright R-1820 engines are on display at the following museums:

Specifications (GR-1820-G2)[edit]

Data from [3]

General characteristics

Components

Performance

See also[edit]

Related development
Comparable engines
Related lists

References[edit]

  1. ^ Lage(2004) pp.157-162
  2. ^ a b c d Hartmann, Gustave. Hispano-Suiza, Les moteurs de tous les Records.pdf (in French). 
  3. ^ Tsygulev (1939). Aviacionnye motory voennykh vozdushnykh sil inostrannykh gosudarstv (Авиационные моторы военных воздушных сил иностранных государств). Moscow: Gosudarstvennoe voennoe izdatelstvo Narkomata Oborony Soyuza SSR.  (Russian)
  • Bridgman, L, (ed.) (1998) Jane's Fighting Aircraft of World War II. Crescent. ISBN 0-517-67964-7
  • Eden, Paul & Soph Moeng, The Complete Encyclopedia of World Aircraft. Amber Books Ltd. Bradley's Close, 74-77 White Lion Street, London, NI 9PF, 2002, ISBN 0-7607-3432-1), 1152 pp.
  • Lage, Manual (2004). Hispano Suiza in Aeronautics. Warrendale, USA: SAE International. ISBN [[Special:BookSources/0-7680-0997-0|0-7680-0997-0 [[Category:Articles with invalid ISBNs]]]] Check |isbn= value (help). 
  • "Aircraft Engines in Armored Vehicles". Retrieved 2006-10-03.