119:
The core of the engine was a forged steel crankcase which enclosed the three piece two-throw crankshaft. The cylinders were arranged equally around the crankcase, with each row off-set by 16.3636° to ensure cooling airflow. Accessories similar to other
Cyclone engines were arranged around the rear
115:
The air-cooled R-4090 was rated to deliver 3,000 hp (2,200 kW) at 2,800 rpm for take-off, from a total displacement of 4,092 cu in (67.06 L), with a compression ratio of 6.85:1. Improved performance was expected from the R-4090 if there had been further development. A
926:
486:
407:
Allied
Aircraft Piston Engines of World War II: History and Development of Frontline Aircraft Piston Engines Produced by Great Britain and the United States During World War II
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as a basis, Wright developed a 22-cylinder engine, using R-3350 cylinders arranged as a two-row radial engine with 11 cylinders per row instead of 9.
141:(792C22AA), drove a contra-rotating propeller shaft and was intended to have a two-speed reduction gearbox to maximize efficiency in cruising flight.
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Although there are no records of failings of the R-4090, the engine was abandoned to allow development of the R-3350 Duplex-Cyclone series.
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14 in (360 mm) diameter impeller, single-stage two-speed supercharger; gear ratios: of 5 to 1 and 7 to 1.
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One inlet and one Sodium-cooled exhaust over-head valves per cylinder, driven by pushrods and rocker arms.
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two-speed single-stage supercharger helped maintain rated power to higher altitudes.
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for new engine designs required for civil and military aircraft. Utilizing the
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face of the crankcase and a 0.333:1 planetary reduction gearbox at the front.
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World
Encyclopedia of Aero Engines: From the Pioneers to the Present Day
880:
908:
468:
444:(revised 1 January 1950 ed.). Air Material Command
266:
3,000 hp (2,200 kW) at 2,800 rpm for take-off
88:
piston engine designed and built in prototype form by
409:. Warrendale, Pennsylvania: SAE International, 1995.
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Air-cooled 22 cylinder two-row radial piston engine
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480:
441:USAF US Navy: Engine model designation system
364:"Curtiss-Wright XR-4090 A 22-Cylinder Radial"
8:
422:R-4360: Pratt & Whitney's Major Miracle
927:
913:
905:
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487:
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1681:Aircraft air-cooled radial piston engines
460:. Wright Aeronautical Corporation. 1942.
395:. 5th edition, Stroud, UK: Sutton, 2006.
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322:
320:
339:"Wright Aeronautical R-4090 Cyclone 22"
316:
135:(790C22AA1), drove a single propeller.
17:
7:
192:4,092 cu in (67.06 L)
153:enginehistory.org, Old Machine Press
1650:US military gas turbine aeroengines
253:0.333:1 planetary reduction gearbox
104:was constantly in competition with
420:White, Graham (14 February 2006).
14:
337:Pearce, William (22 March 2013).
102:Wright Aeronautical Corporation
29:22-cylinder air-cooled two-row
183:6.3125 in (160.3 mm)
1:
1676:1940s aircraft piston engines
343:oldmachinepress.wordpress.com
213:3,230 lb (1,470 kg)
174:6.125 in (155.6 mm)
84:was an American experimental
1655:Piston engine configurations
291:Wright R-3350 Duplex-Cyclone
110:Wright R-3350 Duplex-Cyclone
73:Wright R-3350 Duplex-Cyclone
1702:
204:58 in (1,500 mm)
198:91 in (2,300 mm)
146:Specifications (XR-4090-1)
1637:
20:
82:Wright R-4090 Cyclone 22
1686:Wright aircraft engines
1621:W-configuration inline)
950:H-configuration inline)
938:piston aircraft engine
157:General characteristics
1601:VG (inverted-V inline)
1026:L (single-bank inline)
998:IV (inverted-V inline)
936:United States military
96:Design and development
1578:V (inverted-V inline)
1500:V (upright-V inline)
31:radial piston engine
458:The Wright Cyclones
424:. Specialty Press.
285:Related development
106:Pratt & Whitney
90:Wright Aeronautical
51:Wright Aeronautical
940:designation system
297:Comparable engines
100:During the 1940s,
92:during the 1940s.
21:R-4090 Cyclone 22
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368:enginehistory.org
271:Compression ratio
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401:0-7509-4479-X
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303:Hitachi Ha-51
301:
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264:Power output:
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47:Manufacturer
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36:
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28:
25:
24:
19:
16:
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748:
739:Twin Cyclone
457:
448:24 September
446:. Retrieved
440:
421:
406:
392:
386:Bibliography
373:24 September
371:. Retrieved
367:
358:
348:24 September
346:. Retrieved
342:
307:
296:
295:
284:
283:
269:
263:
247:
241:
234:Supercharger
232:
223:
207:
201:
195:
188:Displacement
186:
177:
168:
162:
150:
149:
122:
118:
114:
99:
81:
79:
58:Number built
15:
1079:O (opposed)
858:turboshafts
545:T-4 Tornado
540:T-3 Tornado
535:T-2 Tornado
530:T-1 Tornado
525:Gipsy L-320
258:Performance
1670:Categories
1591:V-1650 (L)
1553:V-1650 (P)
1275:R-370 (LB)
1252:R (radial)
854:Turboprops
749:Cyclone 22
431:1580071732
311:References
242:Fuel type:
225:Valvetrain
218:Components
209:Dry weight
1642:See also:
1305:R-540 (K)
1300:R-540 (W)
1280:R-370 (K)
1222:O-540 (L)
1217:O-540 (F)
1182:O-360 (L)
1177:O-360 (C)
1147:O-200 (F)
1142:O-200 (C)
821:Turbojets
729:Cyclone 9
724:Cyclone 7
574:Lawrance
202:Diameter:
151:Data from
132:XR-4090-1
797:L-3 Gale
500:Lawrance
280:See also
244:Gasoline
138:R-4090-3
127:Variants
1609:VG-1410
1490:XR-7755
1016:IV-2220
1011:IV-2040
1006:IV-1430
983:XH-3730
978:XH-3130
973:XH-2600
968:XH-2470
963:XH-2240
881:Ramjets
734:Cyclone
576:radials
560:IV-1560
555:IV-1460
510:Wright
196:Length:
1645:X-1800
1629:W-2779
1568:V-3420
1563:V-1950
1558:V-1710
1548:V-1570
1543:V-1560
1538:V-1510
1533:V-1460
1528:V-1440
1523:V-1400
1518:V-1237
1513:V-1150
1485:R-4360
1480:R-4090
1475:R-3350
1470:R-2800
1465:R-2600
1460:R-2180
1455:R-2160
1450:R-2060
1445:R-2000
1440:R-1860
1435:R-1830
1430:R-1820
1425:R-1750
1420:R-1690
1415:R-1670
1410:R-1640
1405:R-1535
1400:R-1510
1395:R-1454
1390:R-1340
1385:R-1300
1380:R-1044
1370:DR-980
1242:O-1230
988:H-4070
958:H-1640
802:R-1200
790:Others
781:R-4090
776:R-3350
771:R-2600
766:R-1820
761:R-1750
756:R-1300
706:R-1670
701:R-1510
565:V-1950
496:Wright
428:
413:
399:
275:6.85:1
179:Stroke
86:radial
1586:V-770
1508:V-720
1375:R-985
1365:R-975
1360:R-915
1355:R-830
1350:R-790
1345:R-760
1340:R-755
1335:R-720
1330:R-680
1325:R-670
1320:R-600
1315:R-550
1310:R-545
1295:R-500
1290:R-440
1285:R-420
1270:R-270
1265:R-265
1260:R-250
1237:O-805
1232:O-580
1227:O-550
1212:O-520
1207:O-480
1202:O-470
1197:O-435
1192:O-425
1187:O-405
1172:O-335
1167:O-300
1162:O-290
1157:O-235
1152:O-205
1137:O-190
1132:O-180
1127:O-175
1122:O-170
1117:O-150
1112:O-145
1107:O-100
1069:L-825
1064:L-510
1059:L-440
1054:L-410
1049:L-390
1044:L-375
1039:L-365
1034:L-330
696:R-975
691:R-790
686:R-760
681:R-540
674:J-6-9
669:J-6-7
664:J-6-5
550:V-720
163:Type:
26:Type
1102:O-90
1097:O-45
1092:O-40
1087:O-15
894:RJ55
889:RJ47
498:and
450:2015
426:ISBN
411:ISBN
397:ISBN
375:2015
350:2015
170:Bore
80:The
871:T49
866:T35
844:J67
839:J65
834:J61
829:J59
659:J-5
654:J-4
649:J-3
624:L-5
619:L-4
614:L-3
609:L-2
604:L-1
599:J-2
594:J-1
589:C-2
584:A-3
62:~3
1672::
366:.
341:.
319:^
928:e
921:t
914:v
856:/
520:E
488:e
481:t
474:v
452:.
434:.
377:.
352:.
273::
251::
236::
227::
211::
190::
181::
172::
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