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Pratt & Whitney R-1690 Hornet

9-cylinder radial engine family

Field	Value
name	R-1690 Hornet
image	File:Pratt & Whitney R-1690 Hornet jaypee.jpg
caption	Pratt & Whitney Hornet, at the Deutsches Museum, Munich.
engine_type	Radial engine
national_origin	United States
manufacturer	Pratt & Whitney
first_run	June 1926
major_applications
number_built	2,944
developed_into

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. 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.

Variants

;R-1690-3: 525 hp ;R-1690-5: 525 hp ;R-1690-11: 775 hp ;R-1690-13: 625 hp ;R-1690-S5D1G: 700 hp ;R-1690-52: 750 hp ;R-1690-SDG: ;R-1690-S1EG: 750 hp ;R-1690-S2EG: ;R-1690-25: 850 hp ;R-1690-S1C3G: 1,050 hp ;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

Bach 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 44

Engines on display

There is a R-1690 on display at the New England Air Museum, Bradley International Airport, Windsor Locks, CT.

Specifications (R-1690 S1E-G)

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

and start a new, fully formatted line with --

789 hp at 2,300 rpm for takeoff
740 hp at 2,250 rpm at 7000 ft |power/weight=0.78 hp/lb

References

Notes

Bibliography

References

link. (2008-01-26 Retrieved: 25 October 2008)
http://neam.org/index.php?option=com_content&view=article&layout=edit&id=1129 "Pratt & Whitney R-1690 Hornet"
Tsygulev. (1939). "Aviacionnye motory voennykh vozdushnykh sil inostrannykh gosudarstv (Авиационные моторы военных воздушных сил иностранных государств)". Gosudarstvennoe voennoe izdatelstvo Narkomata Oborony Soyuza SSR.

Info: Wikipedia Source

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