215:
253:
31:
139:
The Nimbus is a turboshaft engine comprising a gas generator section, which consists of a three-stage compressor, (two axial stages and one centrifugal stage), driven by a two-stage turbine in conjunction with an annular combustion chamber, and a power output section consisting of a single-stage free
154:
The fuel system is designed to control and govern the engine under all operating conditions and to provide safeguards against malfunctions, the pilot selecting rotor speed and the governing element automatically maintaining the rotor speed within close limits under varying conditions of load.
173:
incorporated in the output drive shaft to provide adequate braking of the helicopter's rotor in the high winds encountered over the deck of a fast moving ship, whereas the 105/502 has a single caliper unit.
169:
The Nimbus engines were produced in two main variants, the Mark 103/503 and the Mark 105/502. The Mark 103/503 is generally similar to the Mark 105/502 except that the former has a double-caliper
933:
531:
1751:
926:
953:
1746:
524:
503:
919:
386:
1154:
1666:
1537:
1472:
1270:
1249:
1148:
743:
517:
1497:
1223:
1727:
1631:
1622:
870:
734:
555:
540:
1557:
1307:
1200:
993:
769:
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427:
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1636:
1577:
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1354:
1233:
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759:
116:
865:
359:
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1612:
1402:
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469:
395:
1567:
1512:
1359:
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1180:
1723:
1656:
559:
1711:
1582:
1387:
1382:
1244:
1205:
1144:
1134:
1079:
1069:
1048:
1033:
1023:
1013:
1008:
968:
942:
754:
739:
158:
The lubrication system is self-contained, the oil tank being integral with the air intake casing.
1607:
1552:
1527:
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1502:
1477:
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679:
669:
499:
147:
and is transmitted beneath the gas generator via a flexible coupling, while the drive for the
161:
Engine and helicopter accessories are mounted on a gearbox located on the air intake casing.
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1427:
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59:
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120:
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49:
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79:
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128:
83:
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1492:
1255:
911:
841:
836:
652:
252:
30:
1701:
706:
569:
1321:
890:
783:
241:
170:
148:
112:
46:
1317:
779:
312:
143:
In the Scout and Wasp the main rotor drive is taken from the front of the
1215:
1121:
725:
721:
321:
144:
827:
140:
turbine driving an output shaft via a two-stage reduction gearbox.
251:
237:
213:
915:
513:
498:. Cambridge, England. Patrick Stephens Limited, 1989.
460:
Rolls-Royce Nimbus
Turboshaft Engine original brochure
480:
Bristol/Siddeley Aero Engine School technical manual
1649:
1621:
1600:
1591:
1373:
1316:
1214:
1120:
1097:
1057:
961:
952:
883:
850:
826:
778:
720:
702:
651:
587:
568:
554:
326:Two-stage axial gas generator, single-stage power
332:NATO F-30,34,40,42,44 Diesel, Gasoline(100 hrs)
289:38.7 in (98 cm) across exhaust ducts
927:
525:
8:
1597:
958:
934:
920:
912:
717:
565:
532:
518:
510:
308:Two-stage axial, single-stage centrifugal
376:877 °C internal/EGT 550 °C max
16:1950s British turboshaft aircraft engine
444:
151:is taken from the rear of the gearbox.
123:in the late 1950s. It was used on the
20:
7:
496:World Encyclopedia of Aero Engines
115:engine developed under license by
14:
1752:Bristol Siddeley aircraft engines
29:
1374:Rolls-Royce Barnoldswick (RB)
1:
400:1.44 shp/lb (2.37 kW/kg)
570:Horizontally opposed engines
1592:Aero-derivative industrial
470:Flightglobal online archive
218:Nimbus engine installed on
1768:
1728:Rolls-Royce Heritage Trust
374:Turbine inlet temperature:
283:73.7 in (187 cm)
178:Blackburn-Turbomeca A.129:
1720:
556:Bristol Aeroplane Company
387:Specific fuel consumption
338:Dual scavenge, NATO O-149
295:670 lb (300 kg)
264:Flight global archive and
37:
28:
23:
1747:1950s turboshaft engines
428:List of aircraft engines
382:595 lb/h (270 kg/h)
1058:By company designation:
370:11.1 lb/s (5 kg/s)
269:General characteristics
248:Specifications (Nimbus)
117:Blackburn Aircraft Ltd.
105:Bristol Siddeley Nimbus
360:Overall pressure ratio
257:
223:
135:Design and development
1613:Rolls-Royce Meteorite
396:Power-to-weight ratio
349:Maximum power output:
255:
217:
107:, later known as the
1724:Rolls-Royce Holdings
1657:Alan Arnold Griffith
199:Nimbus 503: (Mk.103)
196:Nimbus 502: (Mk.105)
1712:Spirito Mario Viale
943:Rolls-Royce Limited
451:Gunston 1989, p.38.
1662:R.W. Harvey-Bailey
1608:Rolls-Royce Meteor
1594:and marine engines
410:Comparable engines
258:
238:Saunders-Roe SR.N2
224:
109:Rolls-Royce Nimbus
75:Major applications
1734:
1733:
1645:
1644:
1093:
1092:
909:
908:
879:
878:
698:
697:
380:Fuel consumption:
101:
100:
1759:
1598:
1279:(as Turbo-Union)
1273:(with MAN Turbo)
1252:(with MAN Turbo)
1112:Rolls-Royce RZ.2
989:Eagle XVI (X-16)
959:
936:
929:
922:
913:
718:
704:Bristol Siddeley
566:
545:Bristol Siddeley
534:
527:
520:
511:
481:
478:
472:
467:
461:
458:
452:
449:
111:, was a British
92:
76:
60:Bristol Siddeley
38:Nimbus Mark 103
33:
21:
1767:
1766:
1762:
1761:
1760:
1758:
1757:
1756:
1737:
1736:
1735:
1730:
1716:
1697:Arthur Rowledge
1641:
1617:
1601:Piston engines:
1593:
1587:
1375:
1369:
1312:
1210:
1116:
1089:
1053:
948:
940:
910:
905:
875:
846:
822:
798:Coupled Proteus
774:
709:
694:
647:
583:
558:
550:
538:
508:
494:Gunston, Bill.
485:
484:
479:
475:
468:
464:
459:
455:
450:
446:
436:
416:Rolls-Royce Gem
407:
345:
302:
271:
256:Nimbus Mark 105
250:
212:
190:BnN.2/2 Nimbus:
187:BnN.2/1 Nimbus:
167:
137:
121:Turbomeca Turmo
96:Turbomeca Turmo
90:
82:
74:
50:aircraft engine
17:
12:
11:
5:
1765:
1763:
1755:
1754:
1749:
1739:
1738:
1732:
1731:
1721:
1718:
1717:
1715:
1714:
1709:
1704:
1699:
1694:
1689:
1684:
1682:Adrian Lombard
1679:
1674:
1672:Stanley Hooker
1669:
1664:
1659:
1653:
1651:
1647:
1646:
1643:
1642:
1640:
1639:
1634:
1632:Marine Olympus
1628:
1626:
1619:
1618:
1616:
1615:
1610:
1604:
1602:
1595:
1589:
1588:
1586:
1585:
1580:
1575:
1570:
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1460:
1455:
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1420:
1415:
1410:
1405:
1400:
1395:
1390:
1385:
1379:
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1371:
1370:
1368:
1367:
1362:
1357:
1352:
1347:
1342:
1337:
1332:
1326:
1324:
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1300:
1295:
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1268:
1263:
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1253:
1247:
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1237:
1231:
1226:
1220:
1218:
1212:
1211:
1209:
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1203:
1198:
1193:
1188:
1183:
1178:
1173:
1168:
1163:
1158:
1152:
1142:
1137:
1132:
1126:
1124:
1118:
1117:
1115:
1114:
1109:
1103:
1101:
1099:Rocket engines
1095:
1094:
1091:
1090:
1088:
1087:
1082:
1077:
1072:
1067:
1061:
1059:
1055:
1054:
1052:
1051:
1046:
1041:
1036:
1031:
1026:
1021:
1016:
1011:
1006:
1001:
996:
991:
986:
981:
976:
971:
965:
963:
956:
954:Piston engines
950:
949:
941:
939:
938:
931:
924:
916:
907:
906:
904:
903:
898:
896:Stanley Hooker
893:
887:
885:
881:
880:
877:
876:
874:
873:
868:
863:
857:
855:
852:Rocket engines
848:
847:
845:
844:
839:
833:
831:
824:
823:
821:
820:
815:
810:
805:
800:
795:
789:
787:
776:
775:
773:
772:
767:
762:
757:
752:
747:
737:
731:
729:
715:
712:rocket engines
700:
699:
696:
695:
693:
692:
687:
682:
677:
672:
667:
661:
659:
656:radial engines
649:
648:
646:
645:
640:
635:
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625:
620:
615:
610:
605:
600:
594:
592:
589:Radial engines
585:
584:
582:
581:
575:
573:
563:
560:Piston engines
552:
551:
539:
537:
536:
529:
522:
514:
507:
506:
491:
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489:
483:
482:
473:
462:
453:
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441:
440:
435:
432:
431:
430:
419:
418:
406:
403:
402:
401:
392:
383:
377:
371:
368:Air mass flow:
365:
356:
344:
341:
340:
339:
333:
327:
318:
309:
301:
298:
297:
296:
290:
284:
278:
270:
267:
249:
246:
245:
244:
235:
230:
228:Westland Scout
211:
208:
207:
206:
205:Nimbus Mk.105:
203:
202:Nimbus Mk.103:
200:
197:
194:
191:
188:
185:
182:
179:
166:
163:
136:
133:
125:Westland Scout
99:
98:
93:
91:Developed from
87:
86:
80:Westland Scout
77:
71:
70:
67:
63:
62:
57:
53:
52:
44:
40:
39:
35:
34:
26:
25:
15:
13:
10:
9:
6:
4:
3:
2:
1764:
1753:
1750:
1748:
1745:
1744:
1742:
1729:
1725:
1719:
1713:
1710:
1708:
1707:Arthur Rubbra
1705:
1703:
1700:
1698:
1695:
1693:
1692:Harry Ricardo
1690:
1688:
1687:Cyril Lovesey
1685:
1683:
1680:
1678:
1675:
1673:
1670:
1668:
1665:
1663:
1660:
1658:
1655:
1654:
1652:
1648:
1638:
1635:
1633:
1630:
1629:
1627:
1624:
1620:
1614:
1611:
1609:
1606:
1605:
1603:
1599:
1596:
1590:
1584:
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1579:
1576:
1574:
1571:
1569:
1566:
1564:
1561:
1559:
1556:
1554:
1551:
1549:
1546:
1544:
1541:
1539:
1536:
1534:
1531:
1529:
1526:
1524:
1521:
1519:
1516:
1514:
1511:
1509:
1506:
1504:
1501:
1499:
1496:
1494:
1491:
1489:
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1484:
1481:
1479:
1476:
1474:
1471:
1469:
1466:
1464:
1461:
1459:
1456:
1454:
1451:
1449:
1446:
1444:
1441:
1439:
1436:
1434:
1431:
1429:
1426:
1424:
1421:
1419:
1416:
1414:
1411:
1409:
1406:
1404:
1401:
1399:
1396:
1394:
1391:
1389:
1386:
1384:
1381:
1380:
1378:
1372:
1366:
1363:
1361:
1358:
1356:
1353:
1351:
1348:
1346:
1343:
1341:
1338:
1336:
1333:
1331:
1328:
1327:
1325:
1323:
1319:
1315:
1309:
1308:Trent (RB203)
1306:
1304:
1301:
1299:
1296:
1294:
1291:
1289:
1286:
1284:
1281:
1278:
1275:
1272:
1269:
1267:
1264:
1262:
1259:
1257:
1254:
1251:
1248:
1246:
1243:
1241:
1238:
1236:(with SNECMA)
1235:
1232:
1230:
1227:
1225:
1222:
1221:
1219:
1217:
1213:
1207:
1204:
1202:
1199:
1197:
1194:
1192:
1189:
1187:
1184:
1182:
1179:
1177:
1174:
1172:
1169:
1167:
1164:
1162:
1159:
1157:(with SNECMA)
1156:
1153:
1150:
1146:
1143:
1141:
1138:
1136:
1133:
1131:
1128:
1127:
1125:
1123:
1119:
1113:
1110:
1108:
1105:
1104:
1102:
1100:
1096:
1086:
1083:
1081:
1078:
1076:
1073:
1071:
1068:
1066:
1063:
1062:
1060:
1056:
1050:
1047:
1045:
1042:
1040:
1037:
1035:
1032:
1030:
1027:
1025:
1022:
1020:
1017:
1015:
1012:
1010:
1007:
1005:
1002:
1000:
997:
995:
992:
990:
987:
985:
982:
980:
977:
975:
972:
970:
967:
966:
964:
960:
957:
955:
951:
947:
944:
937:
932:
930:
925:
923:
918:
917:
914:
902:
899:
897:
894:
892:
889:
888:
886:
882:
872:
869:
867:
864:
862:
859:
858:
856:
853:
849:
843:
840:
838:
835:
834:
832:
829:
825:
819:
816:
814:
811:
809:
806:
804:
801:
799:
796:
794:
791:
790:
788:
785:
781:
777:
771:
768:
766:
763:
761:
758:
756:
753:
751:
748:
745:
741:
738:
736:
733:
732:
730:
727:
723:
719:
716:
713:
708:
705:
701:
691:
688:
686:
683:
681:
678:
676:
673:
671:
668:
666:
663:
662:
660:
657:
654:
650:
644:
641:
639:
636:
634:
631:
629:
626:
624:
621:
619:
616:
614:
611:
609:
606:
604:
601:
599:
596:
595:
593:
590:
586:
580:
577:
576:
574:
571:
567:
564:
561:
557:
553:
549:
546:
542:
535:
530:
528:
523:
521:
516:
515:
512:
505:
504:1-85260-163-9
501:
497:
493:
492:
487:
486:
477:
474:
471:
466:
463:
457:
454:
448:
445:
438:
437:
433:
429:
426:
425:
424:
423:
422:Related lists
417:
414:
413:
412:
411:
404:
399:
397:
393:
390:
388:
384:
381:
378:
375:
372:
369:
366:
363:
361:
357:
355:(722 kW)
354:
350:
347:
346:
342:
337:
334:
331:
328:
325:
323:
319:
316:
314:
310:
307:
304:
303:
299:
294:
291:
288:
285:
282:
279:
276:
273:
272:
268:
266:
265:
262:
254:
247:
243:
239:
236:
234:
233:Westland Wasp
231:
229:
226:
225:
221:
220:Westland Wasp
216:
209:
204:
201:
198:
195:
192:
189:
186:
184:BnN.2 Nimbus:
183:
181:BnN.1 Nimbus:
180:
177:
176:
175:
172:
164:
162:
159:
156:
152:
150:
146:
141:
134:
132:
131:helicopters.
130:
129:Westland Wasp
126:
122:
118:
114:
110:
106:
97:
94:
89:
88:
85:
84:Westland Wasp
81:
78:
73:
72:
68:
65:
64:
61:
58:
56:Manufacturer
55:
54:
51:
48:
45:
42:
41:
36:
32:
27:
22:
19:
1677:Gordon Lewis
1667:Ernest Hives
1623:Gas turbines
1376:designations
1349:
994:Eagle (H-24)
984:Eagle (V-12)
946:aero engines
901:Gordon Lewis
802:
735:Gyron Junior
653:Sleeve valve
548:aero engines
495:
488:Bibliography
476:
465:
456:
447:
421:
420:
409:
408:
394:
385:
379:
373:
367:
358:
348:
335:
329:
320:
311:
305:
292:
286:
280:
274:
263:
260:
259:
210:Applications
168:
160:
157:
153:
142:
138:
108:
104:
102:
18:
1702:Henry Royce
1637:Marine Spey
1322:Turboshafts
1155:Olympus 593
784:Turboshafts
714:(1959-1966)
707:gas turbine
562:(1920-1956)
343:Performance
336:Oil system:
306:Compressor:
293:Dry weight:
193:Nimbus 500:
1741:Categories
1318:Turboprops
891:Roy Fedden
780:Turboprops
434:References
330:Fuel type:
313:Combustors
300:Components
277:Turboshaft
242:Hovercraft
222:helicopter
171:disc brake
149:tail rotor
113:turboshaft
69:July 1958
66:First run
47:Turboshaft
1722:See also
1650:Designers
1216:Turbofans
1122:Turbojets
1039:Peregrine
884:Designers
726:Turbofans
722:Turbojets
670:Centaurus
287:Diameter:
261:Data from
119:from the
1493:RB168-62
1256:RB168-62
1149:variants
962:By name:
744:variants
675:Hercules
405:See also
165:Variants
1245:Pegasus
1206:Welland
1147: (
1145:Olympus
1135:Derwent
1049:Vulture
1034:Pennine
1024:Kestrel
1014:Griffon
1009:Goshawk
969:Buzzard
871:Stentor
828:Ramjets
818:Theseus
813:Proteus
765:Phoebus
755:Pegasus
750:Orpheus
742: (
740:Olympus
685:Perseus
638:Phoenix
633:Pegasus
623:Neptune
618:Mercury
613:Lucifer
608:Jupiter
541:Bristol
322:Turbine
317:Annular
281:Length:
145:gearbox
24:Nimbus
1538:RB.193
1478:RB.162
1350:Nimbus
1271:RB.193
1261:RB.175
1240:Medway
1229:Conway
1196:Thames
1176:RB.162
1171:RB.145
1166:RB.108
1161:RB.106
1085:Type R
1080:Type F
1075:Type G
1070:Type H
1029:Merlin
1004:Falcon
974:Condor
861:BS.605
803:Nimbus
793:BS.360
760:BS.100
690:Taurus
665:Aquila
579:Cherub
502:
1583:RB508
1578:RB410
1573:RB235
1568:RB220
1563:RB211
1558:RB203
1553:RB207
1548:RB202
1543:RB199
1533:RB183
1528:RB181
1523:RB178
1518:RB177
1513:RB176
1508:RB175
1503:RB174
1498:RB172
1488:RB168
1483:RB163
1473:RB153
1468:RB146
1463:RB145
1458:RB142
1453:RB141
1448:RB140
1443:RB109
1438:RB108
1433:RB106
1360:Tweed
1355:Trent
1345:Gnome
1330:Clyde
1298:RB235
1293:RB220
1288:RB211
1283:RB202
1277:RB199
1266:RB178
1250:RB153
1224:Adour
1201:Viper
1181:RB176
1107:Larch
979:Crecy
866:Gamma
808:Orion
770:Viper
680:Orion
643:Titan
628:Orion
603:Hydra
598:Draco
439:Notes
391:0.681
364:6.4:1
275:Type:
43:Type
1726:and
1428:RB93
1423:RB82
1418:RB80
1413:RB53
1408:RB50
1403:RB44
1398:RB41
1393:RB39
1388:RB37
1383:RB23
1365:Tyne
1335:Dart
1303:Spey
1234:M45H
1186:Soar
1140:Nene
1130:Avon
1065:PV12
1019:Hawk
842:Odin
837:Thor
710:and
500:ISBN
351:968
127:and
103:The
1340:Gem
1191:Tay
1044:"R"
999:Exe
353:shp
1743::
782:/
724:/
543:/
240:,
1625::
1320:/
1151:)
935:e
928:t
921:v
854::
830::
786::
746:)
728::
658::
591::
572::
533:e
526:t
519:v
398::
389::
362::
324::
315::
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