60:
40:
31:
51:
152:
awarded Wright a contract to develop two new air-cooled radial engines. The first, called the P-1, was a 9-cylinder single row design of 1,652 cu in (27.07 L) displacement that was derived from an earlier
Lawrence design, it produced 400 hp (300 kW). The second, the P-2, had
153:
the same 1,652 cu in (27.07 L) displacement as the P-1, but was an improved design that produced 435 hp (324 kW). Neither engine entered production, with the Navy selecting the superior
59:
778:
1206:
771:
39:
1211:
746:
764:
727:
708:
689:
1216:
133:
117:
470:
154:
1135:
1067:
1035:
791:
141:
157:, so in 1926 work started on the improved 1,750 cu in (28.7 L) design, which became the R-1750 Cyclone.
803:
1062:
1030:
300:
1072:
1040:
400:
350:
1052:
1047:
1020:
1015:
997:
992:
945:
940:
932:
476:
166:
987:
982:
977:
972:
965:
960:
955:
950:
1098:
1057:
1025:
250:
446:
851:
846:
1093:
787:
454:
101:
1185:
915:
900:
895:
890:
880:
841:
856:
836:
831:
826:
821:
816:
1125:
1120:
742:
723:
704:
685:
811:
145:
794:
137:
30:
756:
1200:
867:
450:
121:
113:
80:
1180:
1157:
1088:
910:
905:
885:
875:
677:
1162:
1149:
1130:
458:
50:
1145:
1112:
701:
Aircraft Piston
Engines: From the Manly Balzer to the Continental Tiara
149:
1172:
703:(Corrected ed.). Manhattan, Kansas: Sunflower University Press.
722:. Warrendale, Pennsylvania: Society of Automotive Engineers, Inc.
760:
684:. Wellingborough, Northamptonshire: Patrick Stephens Limited.
619:
617:
148:
came to Wright as the Vice-President. Later that year the
517:
515:
513:
140:
engines under license. In 1923 the Wright purchased the
395:
Power output: 1,800–2,800 hp (1,300–2,100 kW)
345:
Power output: 1,400–1,900 hp (1,000–1,400 kW)
136:
was formed in 1919, initially to develop liquid-cooled
532:
530:
500:
498:
1171:
1144:
1111:
1081:
1006:
931:
924:
865:
801:
479:– contemporary smaller displacement line of engines
295:
Power output: 575–1,525 hp (429–1,137 kW)
392:Displacement: 3,347 cu in (54.85 L)
342:Displacement: 2,603 cu in (42.66 L)
292:Displacement: 1,823 cu in (29.87 L)
208:Displacement: 1,301 cu in (21.32 L)
441:Displacement: 4,090 cu in (67.0 L)
242:Displacement: 1,750 cu in (28.7 L)
245:Power output: 500–525 hp (373–391 kW)
720:Allied Aircraft Piston Engines of World War II
772:
112:was the name given to a family of air-cooled
8:
741:. North Branch, Minnesota: Specialty Press.
739:R-4360: Pratt & Whitney's Major Miracle
928:
779:
765:
757:
1207:Aircraft air-cooled radial piston engines
438: in (156 mm × 160 mm)
389: in (156 mm × 160 mm)
339: in (156 mm × 160 mm)
289: in (156 mm × 175 mm)
239: in (152 mm × 175 mm)
205: in (156 mm × 160 mm)
473:– contemporary competing line of engines
124:aircraft in the 1930s, 1940s and 1950s.
623:
584:
548:
521:
494:
258:9-cylinder single row air cooled radial
222:9-cylinder single row air cooled radial
211:Power output: 800 hp (600 kW)
174:7-cylinder single row air cooled radial
15:
659:
647:
635:
608:
596:
572:
560:
536:
504:
407:22-cylinder two row air cooled radial
358:18-cylinder two row air cooled radial
308:14-cylinder two row air cooled radial
7:
445:Note: the designations refer to the
682:World Encyclopedia of Aero Engines
351:R-3350 Cyclone 18 (Duplex Cyclone)
72:R-1300, R-1820, R-2600 and R-3350
14:
301:R-2600 Cyclone 14 (Twin Cyclone)
225:Bore x stroke: 6 in ×
58:
49:
38:
29:
471:Pratt & Whitney Wasp series
155:Pratt & Whitney R-1340 Wasp
134:Wright Aeronautical Corporation
118:Wright Aeronautical Corporation
453:, followed by the approximate
1:
1212:1920s aircraft piston engines
142:Lawrance Aero Engine Company
1233:
71:
23:
18:
699:Smith, Herschel (1986).
144:, and with the purchase
1217:Wright aircraft engines
477:Wright Whirlwind series
737:White, Graham (2006).
718:White, Graham (1995).
19:Wright Cyclone series
447:engine configurations
120:and used in numerous
114:radial piston engines
650:, pp. 356–365.
638:, pp. 341–346.
626:, pp. 176–177.
611:, pp. 324–331.
599:, pp. 125–126.
587:, pp. 175–176.
102:Wright Aeronautical
449:as follows: "R" =
1194:
1193:
1107:
1106:
748:978-1-58007-097-3
401:R-4090 Cyclone 22
107:
106:
1224:
933:Whirlwind family
929:
795:aircraft engines
781:
774:
767:
758:
752:
733:
714:
695:
663:
657:
651:
645:
639:
633:
627:
621:
612:
606:
600:
594:
588:
582:
576:
570:
564:
558:
552:
546:
540:
534:
525:
519:
508:
502:
437:
436:
432:
429:
424: in ×
423:
422:
418:
415:
388:
387:
383:
380:
375: in ×
374:
373:
369:
366:
338:
337:
333:
330:
325: in ×
324:
323:
319:
316:
288:
287:
283:
280:
275: in ×
274:
273:
269:
266:
238:
237:
233:
230:
204:
203:
199:
196:
191: in ×
190:
189:
185:
182:
167:R-1300 Cyclone 7
146:Charles Lawrance
138:Hispano-Suiza V8
116:designed by the
90:
62:
53:
42:
33:
16:
1232:
1231:
1227:
1226:
1225:
1223:
1222:
1221:
1197:
1196:
1195:
1190:
1167:
1140:
1103:
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1002:
920:
861:
797:
785:
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511:
503:
496:
491:
486:
467:
434:
430:
427:
425:
420:
416:
413:
411:
410:Bore x stroke:
385:
381:
378:
376:
371:
367:
364:
362:
361:Bore x stroke:
335:
331:
328:
326:
321:
317:
314:
312:
311:Bore x stroke:
285:
281:
278:
276:
271:
267:
264:
262:
261:Bore x stroke:
235:
231:
228:
226:
201:
197:
194:
192:
187:
183:
180:
178:
177:Bore x stroke:
163:
130:
89:National origin
88:
67:
66:
65:
64:
63:
55:
54:
45:
44:
43:
35:
34:
12:
11:
5:
1230:
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1220:
1219:
1214:
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1199:
1198:
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1191:
1189:
1188:
1183:
1177:
1175:
1169:
1168:
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1165:
1160:
1154:
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1142:
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1138:
1133:
1128:
1123:
1117:
1115:
1109:
1108:
1105:
1104:
1102:
1101:
1099:R-2160 Tornado
1096:
1091:
1085:
1083:
1079:
1078:
1076:
1075:
1070:
1065:
1060:
1055:
1050:
1044:
1043:
1038:
1036:Duplex-Cyclone
1033:
1028:
1023:
1018:
1012:
1010:
1008:Cyclone family
1004:
1003:
1001:
1000:
995:
990:
985:
980:
975:
969:
968:
963:
958:
953:
948:
943:
937:
935:
926:
925:Wright radials
922:
921:
919:
918:
913:
908:
903:
898:
893:
888:
883:
878:
872:
870:
863:
862:
860:
859:
854:
849:
844:
839:
834:
829:
824:
819:
814:
808:
806:
804:inline engines
799:
798:
786:
784:
783:
776:
769:
761:
754:
753:
747:
734:
728:
715:
709:
696:
690:
673:
671:
668:
665:
664:
652:
640:
628:
613:
601:
589:
577:
575:, p. 125.
565:
563:, p. 129.
553:
551:, p. 176.
541:
539:, p. 324.
526:
524:, p. 175.
509:
507:, p. 319.
493:
492:
490:
487:
485:
482:
481:
480:
474:
466:
463:
443:
442:
439:
408:
397:
396:
393:
390:
359:
347:
346:
343:
340:
309:
297:
296:
293:
290:
259:
251:R-1820 Cyclone
247:
246:
243:
240:
223:
216:R-1750 Cyclone
213:
212:
209:
206:
175:
162:
161:Cyclone family
159:
129:
126:
110:Wright Cyclone
105:
104:
99:
95:
94:
93:United States
91:
85:
84:
78:
74:
73:
69:
68:
57:
56:
48:
47:
46:
37:
36:
28:
27:
26:
25:
24:
21:
20:
13:
10:
9:
6:
4:
3:
2:
1229:
1218:
1215:
1213:
1210:
1208:
1205:
1204:
1202:
1187:
1184:
1182:
1179:
1178:
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1170:
1164:
1161:
1159:
1156:
1155:
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1137:
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1129:
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1122:
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1118:
1116:
1114:
1110:
1100:
1097:
1095:
1092:
1090:
1087:
1086:
1084:
1080:
1074:
1071:
1069:
1066:
1064:
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1059:
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1032:
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1027:
1024:
1022:
1019:
1017:
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1005:
999:
996:
994:
991:
989:
986:
984:
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979:
976:
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967:
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962:
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957:
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952:
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902:
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894:
892:
889:
887:
884:
882:
879:
877:
874:
873:
871:
869:
864:
858:
855:
853:
850:
848:
845:
843:
840:
838:
835:
833:
830:
828:
825:
823:
820:
818:
815:
813:
810:
809:
807:
805:
800:
796:
793:
789:
782:
777:
775:
770:
768:
763:
762:
759:
750:
744:
740:
735:
731:
729:1-56091-655-9
725:
721:
716:
712:
710:0-07-058472-9
706:
702:
697:
693:
691:0-85059-717-X
687:
683:
679:
678:Gunston, Bill
675:
674:
669:
662:, p. 22.
661:
656:
653:
649:
644:
641:
637:
632:
629:
625:
620:
618:
614:
610:
605:
602:
598:
593:
590:
586:
581:
578:
574:
569:
566:
562:
557:
554:
550:
545:
542:
538:
533:
531:
527:
523:
518:
516:
514:
510:
506:
501:
499:
495:
488:
483:
478:
475:
472:
469:
468:
464:
462:
460:
456:
452:
448:
440:
409:
406:
405:
404:
403:
402:
394:
391:
360:
357:
356:
355:
353:
352:
344:
341:
310:
307:
306:
305:
303:
302:
294:
291:
260:
257:
256:
255:
253:
252:
244:
241:
224:
221:
220:
219:
217:
210:
207:
176:
173:
172:
171:
169:
168:
160:
158:
156:
151:
147:
143:
139:
135:
127:
125:
123:
119:
115:
111:
103:
100:
98:Manufacturer
97:
96:
92:
87:
86:
82:
81:Radial engine
79:
76:
75:
70:
61:
52:
41:
32:
22:
17:
1031:Twin Cyclone
1007:
738:
719:
700:
681:
670:Bibliography
655:
643:
631:
624:Gunston 1986
604:
592:
585:Gunston 1986
580:
568:
556:
549:Gunston 1986
544:
522:Gunston 1986
459:cubic inches
455:displacement
444:
399:
398:
349:
348:
299:
298:
249:
248:
215:
214:
165:
164:
131:
109:
108:
1150:turboshafts
837:T-4 Tornado
832:T-3 Tornado
827:T-2 Tornado
822:T-1 Tornado
817:Gipsy L-320
1201:Categories
1146:Turboprops
1041:Cyclone 22
660:White 2006
648:White 1995
636:White 1995
609:White 1995
597:Smith 1986
573:Smith 1986
561:Smith 1986
537:White 1995
505:White 1995
484:References
128:Background
1113:Turbojets
1021:Cyclone 9
1016:Cyclone 7
866:Lawrance
489:Citations
1089:L-3 Gale
792:Lawrance
680:(1986).
465:See also
122:American
1173:Ramjets
1026:Cyclone
868:radials
852:IV-1560
847:IV-1460
802:Wright
433:⁄
419:⁄
384:⁄
370:⁄
354:(1937)
334:⁄
320:⁄
304:(1935)
284:⁄
270:⁄
254:(1932)
234:⁄
218:(1926)
200:⁄
186:⁄
170:(1942)
150:US Navy
83:series
1094:R-1200
1082:Others
1073:R-4090
1068:R-3350
1063:R-2600
1058:R-1820
1053:R-1750
1048:R-1300
998:R-1670
993:R-1510
857:V-1950
788:Wright
745:
726:
707:
688:
451:Radial
988:R-975
983:R-790
978:R-760
973:R-540
966:J-6-9
961:J-6-7
956:J-6-5
842:V-720
77:Type
1186:RJ55
1181:RJ47
790:and
743:ISBN
724:ISBN
705:ISBN
686:ISBN
132:The
1163:T49
1158:T35
1136:J67
1131:J65
1126:J61
1121:J59
951:J-5
946:J-4
941:J-3
916:L-5
911:L-4
906:L-3
901:L-2
896:L-1
891:J-2
886:J-1
881:C-2
876:A-3
457:in
1203::
616:^
529:^
512:^
497:^
461:.
435:16
386:16
336:16
202:16
1148:/
812:E
780:e
773:t
766:v
751:.
732:.
713:.
694:.
431:5
428:+
426:6
421:8
417:1
414:+
412:6
382:5
379:+
377:6
372:8
368:1
365:+
363:6
332:5
329:+
327:6
322:8
318:1
315:+
313:6
286:8
282:7
279:+
277:6
272:8
268:1
265:+
263:6
236:8
232:7
229:+
227:6
198:5
195:+
193:6
188:8
184:1
181:+
179:6
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