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Pratt & Whitney R-1690 Hornet

January 01, 1970

"Pratt & Whitney Hornet" redirects here. For the Pratt & Whitney R-1860 Hornet B, see Pratt & Whitney R-1860.

The Pratt & Whitney R-1690 Hornet was a widely used American aircraft engine. Developed by Pratt & Whitney, 2,944 were produced from 1926 through 1942.[1] It first flew in 1927. It was a single-row, 9-cylinder air-cooled radial design. Displacement was 1,690 cubic inches (27.7 L). It was built under license in Italy as the Fiat A.59. In Germany, the BMW 132 was a developed version of this engine. The R-1860 Hornet B was an enlarged version produced from 1929.

R-1690 Hornet
Pratt & Whitney Hornet, at the Deutsches Museum, Munich.
Type Radial engine
National origin United States
Manufacturer Pratt & Whitney
First run June 1926
Major applications Boeing 80
Lockheed Lodestar
Sikorsky S-42
Vought O2U Corsair
Number built 2,944
Developed into Pratt & Whitney R-1860
BMW 132
Mitsubishi Kinsei

Variants edit

For the R-1860 Hornet B series, see Pratt & Whitney R-1860.
R-1690-3
525 hp (391 kW)
R-1690-5
525 hp (391 kW)
R-1690-11
775 hp (578 kW)
R-1690-13
625 hp (466 kW)
R-1690-S5D1G
700 hp (520 kW)
R-1690-52
750 hp (560 kW)
R-1690-SDG
R-1690-S1EG
750 hp (560 kW)
R-1690-S2EG
R-1690-25
850 hp (630 kW)
R-1690-S1C3G
1,050 hp (780 kW)
Fiat A.59 R.
License built in Italy with reduction gearing.
Fiat A.59 R.C.
License built in Italy with reduction gearing and supercharger.
BMW Hornet
License production of the Hornet in Germany, independently developed as the BMW 132.

Applications edit

Engines on display edit

Specifications (R-1690 S1E-G) edit

 
R-1690 with chamber walls cut away to show internal workings

Data from [3]

General characteristics

  • Type: Nine-cylinder single-row supercharged air-cooled radial engine
  • Bore: 6+1⁄8 in (155.6 mm)
  • Stroke: 6+3⁄8 in (161.9 mm)
  • Displacement: 1,690.5 cu in (27.7 L)
  • Length: 50.98 in (1,295 mm)
  • Diameter: 54.41 in (1,382 mm)
  • Dry weight: 1,014 lb (460 kg)

Components

Performance

See also edit

Related development

Comparable engines

Related lists

References edit

Notes edit

  1. ^ Pratt & Whitney - R-1690 page 2008-01-26 at the Wayback Machine Retrieved: 25 October 2008
  2. ^ http://neam.org/index.php?option=com_content&view=article&layout=edit&id=1129 "Pratt & Whitney R-1690 Hornet"
  3. ^ Tsygulev (1939). (in Russian). Moscow: Gosudarstvennoe voennoe izdatelstvo Narkomata Oborony Soyuza SSR. Archived from the original on 2009-03-24.

Bibliography edit

  • Gunston, Bill (2006). World Encyclopedia of Aero Engines, 5th Edition. Phoenix Mill, Gloucestershire, England, UK: Sutton Publishing Limited. ISBN 0-7509-4479-X.

External links edit

 
Wikimedia Commons has media related to Pratt & Whitney R-1690.

    January 01, 1970
    pratt, whitney, 1690, hornet, pratt, whitney, hornet, redirects, here, pratt, whitney, 1860, hornet, pratt, whitney, 1860, this, article, includes, list, general, references, lacks, sufficient, corresponding, inline, citations, please, help, improve, this, art. Pratt amp Whitney Hornet redirects here For the Pratt amp Whitney R 1860 Hornet B see Pratt amp Whitney R 1860 This article includes a list of general references but it lacks sufficient corresponding inline citations Please help to improve this article by introducing more precise citations April 2018 Learn how and when to remove this message The Pratt amp Whitney R 1690 Hornet was a widely used American aircraft engine Developed by Pratt amp Whitney 2 944 were produced from 1926 through 1942 1 It first flew in 1927 It was a single row 9 cylinder air cooled radial design Displacement was 1 690 cubic inches 27 7 L It was built under license in Italy as the Fiat A 59 In Germany the BMW 132 was a developed version of this engine The R 1860 Hornet B was an enlarged version produced from 1929 R 1690 Hornet Pratt amp Whitney Hornet at the Deutsches Museum Munich Type Radial engine National origin United States Manufacturer Pratt amp Whitney First run June 1926 Major applications Boeing 80 Lockheed Lodestar Sikorsky S 42 Vought O2U Corsair Number built 2 944 Developed into Pratt amp Whitney R 1860 BMW 132 Mitsubishi Kinsei Contents 1 Variants 2 Applications 3 Engines on display 4 Specifications R 1690 S1E G 4 1 General characteristics 4 2 Components 4 3 Performance 5 See also 6 References 6 1 Notes 6 2 Bibliography 7 External linksVariants editFor the R 1860 Hornet B series see Pratt amp Whitney R 1860 R 1690 3 525 hp 391 kW R 1690 5 525 hp 391 kW R 1690 11 775 hp 578 kW R 1690 13 625 hp 466 kW R 1690 S5D1G 700 hp 520 kW R 1690 52 750 hp 560 kW R 1690 SDG R 1690 S1EG 750 hp 560 kW R 1690 S2EG R 1690 25 850 hp 630 kW R 1690 S1C3G 1 050 hp 780 kW Fiat A 59 R License built in Italy with reduction gearing Fiat A 59 R C License built in Italy with reduction gearing and supercharger BMW Hornet License production of the Hornet in Germany independently developed as the BMW 132 Applications editBach Air Yacht Bellanca 31 40 Boeing 80 Boeing Model 95 Boeing Model 299 Burnelli UB 14 Douglas O 38 Focke Wulf Fw 200 V1 Gee Bee Model R 2 1933 Gee Bee R 1 2 Super Sportster Granville Miller de Lackner R 6H Q E D Junkers Ju 52 Junkers Ju 86 Junkers W 34 Keystone B 3 Lockheed Model 14 Super Electra L 14H Lockheed Lodestar C 56A C 56B C 56C C 56D C 56E C 59 Mk 1a Martin BM Martin XB 14 Vought O2U Corsair Sikorsky S 40A Sikorsky S 42 Sikorsky S 43 Wedell Williams Model 44Engines on display editThere is a R 1690 on display at the New England Air Museum Bradley International Airport Windsor Locks CT 2 Specifications R 1690 S1E G edit nbsp R 1690 with chamber walls cut away to show internal workings Data from 3 General characteristics Type Nine cylinder single row supercharged air cooled radial engine Bore 6 1 8 in 155 6 mm Stroke 6 3 8 in 161 9 mm Displacement 1 690 5 cu in 27 7 L Length 50 98 in 1 295 mm Diameter 54 41 in 1 382 mm Dry weight 1 014 lb 460 kg Components Valvetrain Pushrod actuated Supercharger Single speed centrifugal type supercharger 12 0 1 gear ratio Fuel system Two barrel Stromberg carburetor Fuel type 87 octane rating gasoline Cooling system Air cooled Reduction gear Epicyclic gearing 2 3 Performance Power output 789 hp 588 kW at 2 300 rpm for takeoff 740 hp 550 kW at 2 250 rpm at 7 000 ft 2 100 m Specific power 0 47 hp cu in 21 39 kW L Compression ratio 6 0 1 Specific fuel consumption 0 6 lb hp h 362 g kW h Oil consumption 0 42 oz hp h 16 g kW h Power to weight ratio 0 78 hp lb 1 28 kW kg See also editRelated development BMW 132 Mitsubishi Kinsei Pratt amp Whitney R 1860 Hornet B Pratt amp Whitney R 2180 A Twin Hornet Comparable engines Bristol Pegasus Wright R 1750 Related lists List of aircraft enginesReferences editNotes edit Pratt amp Whitney R 1690 page Archived 2008 01 26 at the Wayback Machine Retrieved 25 October 2008 http neam org index php option com content amp view article amp layout edit amp id 1129 Pratt amp Whitney R 1690 Hornet Tsygulev 1939 Aviacionnye motory voennykh vozdushnykh sil inostrannykh gosudarstv Aviacionnye motory voennyh vozdushnyh sil inostrannyh gosudarstv in Russian Moscow Gosudarstvennoe voennoe izdatelstvo Narkomata Oborony Soyuza SSR Archived from the original on 2009 03 24 Bibliography edit Gunston Bill 2006 World Encyclopedia of Aero Engines 5th Edition Phoenix Mill Gloucestershire England UK Sutton Publishing Limited ISBN 0 7509 4479 X External links edit nbsp Wikimedia Commons has media related to Pratt amp Whitney R 1690 Pratt amp Whitney R 1690 page Retrieved from https en wikipedia org w index php title Pratt 26 Whitney R 1690 Hornet amp oldid 1181710702, wikipedia, wiki, book, books, library,

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