35:
239:
172:
27:
401:
269:
Certain air-deployed munitions, particularly "dumb" or unguided 500-pound (230 kg) bombs, are often retrofitted with bolt-on strake sets. Designed as an open collar with strakes fitted to the outside face, these strake sets are used to alter and normalize the aerodynamics of the weapon, yielding
225:
research aircraft had rear fuselage lateral fins or "Tail fins", sometimes called strakes, continuous with the trailing edge of the main wing. This allowed the positioning of a rear control surface at the end of each fin. Together with the main and forward (canard) wing control surfaces, this
273:
Strakes are also often found on "smart" or guided munitions as an aid to the guidance system. By stabilizing the slipstream of air traveling over the weapon, the actions of control surfaces are much more predictable and precise, again improving the accuracy of the weapon.
270:
greater accuracy. As most such munitions were manufactured with only tail-mounted stabilizer fins, the addition of longitudinal strakes proves a much cleaner flow of air around the weapon during its glide, reducing the tendency to yaw and improving terminal accuracy.
34:
206:, to provide adequate stability at high angles of attack when the tail fin is shielded from the main airstream by the fuselage and/or the wing wake. Typical examples can be seen on the
101:
On both supersonic and subsonic types, smaller strakes are sometimes applied to the forward fuselage to control the fuselage flow at high angles of attack; for example, the
159:
slung under the wings, strakes may be added to one or both sides of each nacelle to produce vortices that energize the airflow over the wings in times of high
249:
Anti-spin leading edge strakes, or spin strakes, or antispin fillet may be placed at the tailplane roots of generally aerobatic aircraft, such as the
433:
1010:
656:
139:
SST projects) featured a forward extended leading edge that may be considered as a wing strake; it provides the same additional
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1005:
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691:
283:
191:
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405:
261:. Ventral or dorsal fins increasing the directional stability are also used as anti-spin devices.
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651:
250:
20:
1358:
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One or two large fins or strakes are sometimes positioned under the rear fuselage or below the
1338:
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463:
1303:
1106:
711:
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207:
8:
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to improve the flight characteristics either by controlling the airflow (acting as large
990:
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850:
791:
563:
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1035:
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890:
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870:
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186:, to provide a better tail surfaces efficiency. Typical examples can be seen on the
1353:
1236:
910:
805:
528:
503:
446:
298:
187:
183:
175:
69:
411:
1363:
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825:
473:
215:
182:
One or two ventral strakes are sometimes positioned under the fuselage, as large
160:
144:
136:
731:
598:
1348:
1208:
925:
483:
478:
128:
1129:
1378:
1277:
1216:
1020:
955:
593:
573:
488:
371:
Summary of spin technology as related to the light general-aviation airplanes
1313:
1241:
1204:
1184:
1174:
1149:
1114:
895:
865:
835:
801:
781:
771:
766:
736:
671:
538:
508:
468:
222:
57:
238:
171:
1261:
1144:
860:
716:
163:, such as during takeoff and landing, thus improving wing effectiveness.
140:
132:
1251:
1139:
1134:
1090:
1085:
920:
855:
830:
786:
761:
746:
681:
543:
533:
211:
120:
1308:
1226:
1154:
1119:
975:
756:
741:
721:
676:
661:
618:
603:
588:
523:
493:
203:
26:
1221:
1194:
1169:
935:
915:
776:
706:
623:
548:
518:
454:
124:
102:
65:
61:
49:
995:
646:
628:
553:
156:
76:
105:
had small nose strakes "to get a better directional stability".
75:
In general a strake is longer than it is wide, in contrast to a
701:
608:
583:
513:
400:
38:
1124:
726:
578:
386:, Lateral and directional stability and spinning, p.461.
441:
347:, "Tail fins - Dorsal and others fins on fuselage"
155:On jet aircraft where the engines are mounted in
1376:
427:
434:
420:
319:Les avions de transport modernes et futurs
197:
89:(LERX) are also sometimes referred to as
237:
170:
33:
25:
360:, 2nd Printing, Speciality Press (1985)
1377:
415:
350:
72:) or by a simple stabilising effect.
233:
13:
259:de Havilland Canada DHC-1 Chipmunk
166:
150:
14:
1401:
393:
60:surface generally mounted on the
399:
108:
96:
1344:In-flight entertainment system
1041:Horizontal situation indicator
376:
363:
337:
324:
311:
30:Nose, wing and ventral strakes
1:
304:
1324:Environmental control system
264:
87:Leading edge root extensions
41:over the wing strakes of an
7:
384:The design of the aeroplane
277:
115:Leading edge root extension
10:
1406:
1001:Course deviation indicator
692:Electro-hydraulic actuator
284:Index of aviation articles
192:Lockheed F-104 Starfighter
112:
18:
1291:
1270:
1232:Conventional landing gear
1203:
1099:
934:
800:
637:
453:
255:Scottish Aviation Bulldog
147:by leading edge suction.
1016:Flight management system
1319:Emergency oxygen system
1081:Turn and slip indicator
876:Leading-edge droop flap
846:Drag-reducing aerospike
821:Adaptive compliant wing
816:Active Aeroelastic Wing
251:de Havilland Tiger Moth
21:Strake (disambiguation)
1359:Passenger service unit
1160:Self-sealing fuel tank
1056:Multi-function display
321:, Teknea, 1997, p. 229
317:André Peyrat-Armandy,
294:Leading edge extension
246:
226:effectively gave it a
198:Rear strakes—tail fins
179:
45:
31:
16:Flight control surface
1385:Aircraft aerodynamics
1339:Ice protection system
1257:Tricycle landing gear
1247:Landing gear extender
464:Aft pressure bulkhead
241:
174:
113:Further information:
37:
29:
1304:Auxiliary power unit
712:Flight control modes
408:at Wikimedia Commons
334:, Double Delta Wings
208:Piaggio P.180 Avanti
43:F/A-18E Super Hornet
19:For other uses, see
1390:Aircraft components
1283:Escape crew capsule
1190:War emergency power
1061:Pitot–static system
906:Variable-sweep wing
614:Vertical stabilizer
289:Chine (aeronautics)
253:(British version),
991:Attitude indicator
971:Airspeed indicator
966:Aircraft periscope
345:Fluid Dynamic Lift
332:Fluid Dynamic Lift
247:
180:
46:
32:
1372:
1371:
1299:Aircraft lavatory
1036:Heading indicator
981:Annunciator panel
961:Air data computer
871:Leading-edge cuff
404:Media related to
234:Anti-spin strakes
184:vortex generators
70:vortex generators
1397:
1354:Navigation light
1334:Hydraulic system
1309:Bleed air system
1237:Drogue parachute
911:Vortex generator
529:Interplane strut
436:
429:
422:
413:
412:
403:
387:
382:Daroll Stinton,
380:
374:
369:Nasa TN D-6575,
367:
361:
354:
348:
341:
335:
328:
322:
315:
299:Vortex generator
242:Spin strakes on
188:SOCATA TB family
1405:
1404:
1400:
1399:
1398:
1396:
1395:
1394:
1375:
1374:
1373:
1368:
1364:Ram air turbine
1329:Flight recorder
1287:
1266:
1199:
1180:Thrust reversal
1104:
1095:
1066:Radar altimeter
1031:Head-up display
941:
930:
826:Anti-shock body
808:
796:
657:Artificial feel
639:Flight controls
633:
499:Fabric covering
449:
445:components and
440:
396:
391:
390:
381:
377:
368:
364:
355:
351:
342:
338:
329:
325:
316:
312:
307:
280:
267:
236:
230:configuration.
216:Beechcraft 1900
200:
178:ventral strakes
169:
167:Ventral strakes
161:angle of attack
153:
151:Nacelle strakes
145:angle of attack
137:Lockheed L-2000
117:
111:
99:
24:
17:
12:
11:
5:
1403:
1393:
1392:
1387:
1370:
1369:
1367:
1366:
1361:
1356:
1351:
1349:Landing lights
1346:
1341:
1336:
1331:
1326:
1321:
1316:
1311:
1306:
1301:
1295:
1293:
1289:
1288:
1286:
1285:
1280:
1274:
1272:
1271:Escape systems
1268:
1267:
1265:
1264:
1259:
1254:
1249:
1244:
1239:
1234:
1229:
1224:
1219:
1213:
1211:
1209:arresting gear
1201:
1200:
1198:
1197:
1192:
1187:
1182:
1177:
1172:
1167:
1165:Splitter plate
1162:
1157:
1152:
1147:
1142:
1137:
1132:
1127:
1122:
1117:
1111:
1109:
1097:
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1088:
1083:
1078:
1073:
1068:
1063:
1058:
1053:
1048:
1043:
1038:
1033:
1028:
1023:
1018:
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998:
993:
988:
983:
978:
973:
968:
963:
958:
953:
947:
945:
932:
931:
929:
928:
923:
918:
913:
908:
903:
898:
893:
888:
883:
878:
873:
868:
863:
858:
853:
848:
843:
838:
833:
828:
823:
818:
812:
810:
798:
797:
795:
794:
789:
784:
779:
774:
769:
764:
759:
754:
749:
744:
739:
734:
729:
724:
719:
714:
709:
704:
699:
694:
689:
684:
679:
674:
669:
664:
659:
654:
649:
643:
641:
635:
634:
632:
631:
626:
621:
616:
611:
606:
601:
596:
591:
586:
581:
576:
571:
566:
561:
556:
551:
546:
541:
536:
531:
526:
521:
516:
511:
506:
501:
496:
491:
486:
484:Cruciform tail
481:
479:Crack arrestor
476:
471:
466:
460:
458:
451:
450:
439:
438:
431:
424:
416:
410:
409:
395:
394:External links
392:
389:
388:
375:
362:
349:
336:
323:
309:
308:
306:
303:
302:
301:
296:
291:
286:
279:
276:
266:
263:
244:DHC-1 Chipmunk
235:
232:
199:
196:
168:
165:
152:
149:
129:Tupolev Tu-144
110:
107:
98:
95:
15:
9:
6:
4:
3:
2:
1402:
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1388:
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1317:
1315:
1312:
1310:
1307:
1305:
1302:
1300:
1297:
1296:
1294:
1292:Other systems
1290:
1284:
1281:
1279:
1278:Ejection seat
1276:
1275:
1273:
1269:
1263:
1260:
1258:
1255:
1253:
1250:
1248:
1245:
1243:
1240:
1238:
1235:
1233:
1230:
1228:
1225:
1223:
1222:Arrestor hook
1220:
1218:
1217:Aircraft tire
1215:
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1212:
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1037:
1034:
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1029:
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1024:
1022:
1021:Glass cockpit
1019:
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999:
997:
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992:
989:
987:
984:
982:
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956:Air data boom
954:
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811:
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778:
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773:
770:
768:
765:
763:
760:
758:
755:
753:
750:
748:
745:
743:
740:
738:
737:Rudder pedals
735:
733:
730:
728:
725:
723:
720:
718:
715:
713:
710:
708:
705:
703:
700:
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678:
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668:
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663:
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636:
630:
627:
625:
622:
620:
617:
615:
612:
610:
607:
605:
602:
600:
597:
595:
594:Trailing edge
592:
590:
587:
585:
582:
580:
577:
575:
574:Stressed skin
572:
570:
567:
565:
562:
560:
557:
555:
552:
550:
547:
545:
542:
540:
537:
535:
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530:
527:
525:
522:
520:
517:
515:
512:
510:
507:
505:
502:
500:
497:
495:
492:
490:
487:
485:
482:
480:
477:
475:
472:
470:
467:
465:
462:
461:
459:
456:
452:
448:
444:
437:
432:
430:
425:
423:
418:
417:
414:
407:
402:
398:
397:
385:
379:
372:
366:
359:
353:
346:
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333:
327:
320:
314:
310:
300:
297:
295:
292:
290:
287:
285:
282:
281:
275:
271:
262:
260:
256:
252:
245:
240:
231:
229:
228:three-surface
224:
219:
217:
213:
209:
205:
195:
193:
189:
185:
177:
176:Socata TB-200
173:
164:
162:
158:
148:
146:
142:
138:
134:
130:
126:
122:
116:
106:
104:
94:
92:
88:
84:
82:
78:
73:
71:
67:
63:
59:
55:
51:
44:
40:
36:
28:
22:
1314:Deicing boot
1242:Landing gear
1185:Townend ring
1175:Thrust lever
1150:NACA cowling
1115:Autothrottle
1107:fuel systems
1105:devices and
900:
896:Stall strips
866:Krueger flap
836:Channel wing
782:Wing warping
772:Stick shaker
767:Stick pusher
687:Dual control
672:Centre stick
539:Leading edge
509:Flying wires
469:Cabane strut
383:
378:
370:
365:
358:The X-Planes
357:
356:Miller, J.;
352:
344:
339:
331:
326:
318:
313:
272:
268:
248:
223:Grumman X-29
220:
201:
181:
154:
118:
109:Wing strakes
100:
97:Nose strakes
91:wing strakes
90:
85:
74:
53:
47:
1262:Tundra tire
1145:Intake ramp
1076:Transponder
861:Gurney flap
802:Aerodynamic
717:Fly-by-wire
599:Triple tail
343:In Hoerner
141:vortex lift
133:Boeing 2707
58:aerodynamic
1379:Categories
1252:Oleo strut
1140:Inlet cone
1135:Gascolator
1101:Propulsion
1091:Yaw string
1086:Variometer
942:instrument
921:Wing fence
856:Gouge flap
831:Blown flap
787:Yaw damper
762:Stabilator
747:Side-stick
682:Dive brake
569:Stabilizer
544:Lift strut
534:Jury strut
305:References
212:Learjet 60
123:aircraft (
121:delta wing
1227:Autobrake
1155:NACA duct
1130:Fuel tank
1120:Drop tank
1103:controls,
986:Astrodome
976:Altimeter
841:Dog-tooth
806:high-lift
757:Spoileron
742:Servo tab
722:Gust lock
677:Deceleron
662:Autopilot
619:Wing root
604:Twin tail
589:Tailplane
524:Hardpoint
494:Empennage
457:structure
373:, fig. 10
330:Hoerner,
265:Munitions
204:empennage
81:moustache
1195:Wet wing
1170:Throttle
916:Vortilon
777:Trim tab
707:Flaperon
697:Elevator
652:Airbrake
624:Wing tip
549:Longeron
519:Fuselage
455:Airframe
443:Aircraft
278:See also
157:nacelles
143:at high
125:Concorde
103:Concorde
66:aircraft
62:fuselage
50:aviation
39:Vortices
1205:Landing
996:Compass
944:systems
936:Avionic
926:Winglet
809:devices
752:Spoiler
647:Aileron
629:Wingbox
554:Nacelle
504:Fairing
447:systems
406:Strakes
190:or the
119:Double
77:winglet
940:flight
901:Strake
732:Rudder
702:Elevon
667:Canard
609:V-tail
584:T-tail
514:Former
474:Canopy
257:, and
64:of an
56:is an
54:strake
1125:FADEC
1011:EICAS
886:Slats
727:HOTAS
579:Strut
79:or a
1207:and
1071:TCAS
1051:ISIS
1006:EFIS
951:ACAS
938:and
891:Slot
851:Flap
804:and
792:Yoke
564:Spar
489:Dope
221:The
214:and
135:and
52:, a
1046:INS
1026:GPS
881:LEX
559:Rib
218:D.
48:In
1381::
210:,
194:.
131:,
127:,
93:.
83:.
435:e
428:t
421:v
23:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
_81_maneuvers_over_the_Nimitz-class_aircraft_carrier_US.jpg)
