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characteristics arising from the aircraft's flawed aerodynamic layout, particularly a poorly positioned tail and vertical stabilizer which, in some wing positions, could lead to an irrecoverable spin. This violent stall / spin instability would eventually cause the destruction of the second aircraft
169:
fighter prototype recovered by United States troops in 1945 from the experimental facility at
Oberammergau, Germany, was brought back to the United States. Although damaged in transit, the innovative fighter prototype was delivered to the Bell factory at Buffalo, New York where company engineering
225:
design for aircraft intended to fly at a wide range of speeds. Despite the X-5's stability problems, the concept was developed to an outboard rather than inboard hinge, and was later successfully implemented in such aircraft as the
209:
Two X-5s were built (serial numbers 50-1838 and 50-1839). The first was completed 15 February 1951, and the two aircraft made their first flights on 20 June and 10 December 1951. Almost 200 flights were made at speeds up to
200:
The unfavorable spin characteristics also led to the cancellation of tentative plans by the United States Air Force to modify the X-5's design into a low-cost tactical fighter for NATO and other foreign countries.
156:
company. In a further development of the German design, which could only have its wing sweepback angle adjusted on the ground, the Bell engineers devised a system of electric motors to adjust the sweep in flight.
214:
0.9 and altitudes of 40,000 ft (12,000 m). One aircraft was lost on 14 October 1953, when it failed to recover from a spin at 60Β° sweepback. Air Force
Captain Ray Popson died in the crash at
181:
to lock the wing into its inflight positions. Moving from full extension to full sweep took less than 30 seconds. The articulation of the hinge and pivots partly compensated for the shifts in
173:
Although superficially similar, the X-5 was much more complex than the P.1101, with three sweep positions: 20Β°, 40Β° and 60Β°, creating an inflight "variable-geometry" platform. A
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218:. The other X-5 remained at Edwards and continued active testing until 1955, and remained in service as a chase plane until 1958.
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staff studied the design closely, and, led by Chief
Designer Robert J. Woods, submitted a proposal for a similar design.
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286:. It was delivered to the museum in March 1958. It is displayed in the museum's Research & Development Hangar.
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628:. Washington, DC: National Aeronautics and Space Administration, 1984 (revised 2003 in Smithsonian edition).
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assembly moved the wing's hinge along a set of short horizontal rails, using
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On The
Frontier: Flight Research At Dryden 1946β1981 (NASA SP4303)
120:
641:
Concept
Aircraft: Prototypes, X-Planes and Experimental Aircraft
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687:
293:
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engine, 4,900 lbf (22 kN) thrust at sea level
666:, SP-2000-4531 β June 2003; NASA online PDF Monograph
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20 ft 9 in (6.32 m) swept at 60Β° sweep
221:
The X-5 successfully demonstrated the advantage of a
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573:. Marine on St. Croix: Speciality. pp. 56β63.
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Aircraft of comparable role, configuration, and era
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Orthographically projected diagram of the Bell X-5.
197:and the death of its Air Force test pilot in 1953.
108:
100:
95:
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72:
62:
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40:
35:
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673:"Dart Shaped Plane Sweeps Wings Back In Flight"
557:National Museum of the United States Air Force.
276:National Museum of the United States Air Force
16:NASA experimental variable-sweep wing aircraft
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664:American X-Vehicles: An Inventory X-1 to X-50
8:
410:705 mph (1,135 km/h, 613 kn)
81:National Advisory Committee for Aeronautics
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145:. It was inspired by the untested wartime
18:
2992:1950s United States experimental aircraft
416:750 mi (1,210 km, 650 nmi)
143:changing the sweep of its wings in flight
596:"The Incomplete Guide to Airfoil Usage"
495:
643:. Kent, UK: Grange Books plc., 2005.
274:The sole surviving X-5 is now at the
7:
671:Bonnier Corporation (August 1951).
325:33 ft 4 in (10.16 m)
125:A composite photograph showing the
679:. Bonnier Corporation. p. 84.
343:12 ft 0 in (3.66 m)
331:30 ft 6 in (9.30 m)
14:
349:175 sq ft (16.3 m)
27:
571:The X-planes : X-1 to X-29
305:The X-planes : X-1 to X-29
280:Wright-Patterson Air Force Base
422:42,000 ft (13,000 m)
1:
639:Winchester, Jim. "Bell X-5."
479:List of experimental aircraft
382:9,875 lb (4,479 kg)
376:6,350 lb (2,880 kg)
192:Even so, the X-5 had vicious
3012:Aircraft first flown in 1951
2987:Variable-sweep-wing aircraft
719:Bell Helicopter/Bell Textron
2997:Single-engined jet aircraft
559:Retrieved: 22 October 2016.
3028:
2959:Assigned to multiple types
2073:Non-production helicopters
2952:
2453:) designations since 1941
2405:
457:North American F-86 Sabre
290:Specifications (Bell X-5)
57:Bell Aircraft Corporation
26:
535:Air & Space Magazine
2459:Supersonic/special test
600:m-selig.ae.illinois.edu
502:Winchester 2005, p. 37.
310:General characteristics
236:Mikoyan Gurevich MiG-23
77:United States Air Force
2982:Edwards Air Force Base
1911:Commercial helicopters
299:
228:General Dynamics F-111
216:Edwards Air Force Base
161:Design and development
130:
129:βs variable-sweep wing
2447:experimental aircraft
2445:USAF / Joint Service
2099:Experimental aircraft
297:
124:
45:Experimental aircraft
2407:Unknown/not assigned
624:Hallion, Richard P.
569:Miller, Jay (1983).
520:Hallion 1984, p. 47.
511:Hallion 1984, p. 52.
452:Messerschmitt P.1101
447:Grumman XF10F Jaguar
189:as the wings moved.
167:Messerschmitt P.1101
1851:utility helicopters
264:Rockwell B-1 Lancer
232:Grumman F-14 Tomcat
205:Operational history
36:General information
2499:"X" (1948βpresent)
1798:Attack helicopters
300:
244:Sukhoi Su-17/20/22
187:center of pressure
131:
3007:Mid-wing aircraft
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2362:Super Transporter
594:Lednicer, David.
390:Allison J35-A-17A
183:center of gravity
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165:The incomplete
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408:Maximum speed:
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137:was the first
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739:
737:
734:
733:
731:
725:
720:
716:
715:Bell Aircraft
709:
704:
702:
697:
695:
690:
689:
686:
678:
674:
669:
667:
665:
661:
660:
656:
650:
649:1-84013-809-2
646:
642:
638:
635:
634:1-58834-134-8
631:
627:
623:
622:
617:
616:
601:
597:
590:
587:
582:
576:
572:
565:
562:
558:
555:
550:
547:
536:
532:
531:"Swing Wings"
526:
523:
517:
514:
508:
505:
499:
496:
489:
488:
484:
480:
477:
476:
475:
474:
473:Related lists
468:
465:
463:
460:
458:
455:
453:
450:
448:
445:
444:
443:
442:
435:
430:
428:
427:Thrust/weight
424:
421:
418:
415:
412:
409:
406:
405:
404:
402:
394:
391:
387:
384:
381:
380:Gross weight:
378:
375:
374:Empty weight:
372:
370:
369:NACA 64A08.28
367:
363:
360:
357:
355:
351:
348:
345:
342:
339:
336:
333:
330:
327:
324:
321:
318:
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314:
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204:
202:
198:
195:
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188:
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176:
171:
168:
160:
158:
155:
154:Messerschmitt
152:
148:
144:
140:
136:
128:
123:
115:
111:
107:
103:
99:
94:
90:
86:
82:
78:
75:
73:Primary users
71:
65:
61:
58:
55:
53:
49:
46:
43:
39:
34:
30:
25:
20:
2956:Not assigned
2532:
2497:Experimental
2487:
2292:Jet Ranger X
2262:GlobalRanger
2160:
1042:
729:designations
727:Manufacturer
676:
663:
640:
625:
618:Bibliography
603:. Retrieved
599:
589:
570:
564:
556:
549:
538:. Retrieved
534:
525:
516:
507:
498:
472:
471:
440:
439:
425:
419:
413:
407:
400:
398:
385:
379:
373:
365:
358:
352:
346:
340:
334:
328:
322:
316:
309:
307:
302:
301:
284:Dayton, Ohio
273:
220:
208:
199:
191:
172:
164:
134:
132:
126:
104:20 June 1951
101:First flight
88:Number built
52:Manufacturer
2649:26–50
2347:Sioux Scout
554:"Bell X-5".
401:Performance
386:Powerplant:
362:NACA 64A011
179:disc brakes
141:capable of
2976:Categories
2962:Unofficial
2754:X-44 (UAV)
2749:X-44 MANTA
2506:1–25
2397:Zulu Cobra
2372:TwinRanger
2357:Super Huey
2352:SuperCobra
2337:Sea Ranger
2312:LongRanger
2257:Fire Scout
2212:Airabonita
2016:Tiltrotors
1809:Bell AH-1
580:0933424353
540:2021-07-18
485:References
347:Wing area:
223:swing-wing
2807:51–
2367:Twin Huey
2332:Sea Cobra
2302:KingCobra
2297:Kingcobra
2287:JetRanger
2272:HueyCobra
2252:Eagle Eye
2237:BigLifter
2222:Airacomet
2217:Airacobra
2146:LLRV/LLTV
329:Wingspan:
303:Data from
270:Survivors
175:jackscrew
112:December
2902:See also
2387:Vigilant
2282:Iroquois
2277:Invictus
2227:Airacuda
721:aircraft
605:16 April
436:See also
393:turbojet
262:and the
139:aircraft
135:Bell X-5
127:Bell X-5
63:Designer
2451:X-plane
2232:Arapaho
2136:FCX-001
1813:Singles
1700:912β917
1690:681β910
1680:647β679
1670:610β645
1660:600β608
1650:846β598
1640:577β582
1630:549β575
1620:541β547
1610:534β539
1600:526β532
1590:506β524
1580:550β504
1525:431β439
1500:418β426
1435:401β405
1425:361β399
1415:310β359
1405:302β308
1395:250β300
1385:231β248
1375:223β229
1248:131β199
931:39 (II)
354:Airfoil
341:Height:
323:Length:
109:Retired
96:History
2327:Ranger
2317:Osprey
2181:XF-109
1902:ARH-70
1835:YAH-63
1789:PQM-56
1093:70β100
926:39 (I)
647:
632:
577:
414:Range:
258:, the
256:Tu-160
250:, the
242:, the
240:MiG-27
234:, the
151:German
147:P.1101
2944:XQ-67
2939:XQ-58
2934:M2-F3
2929:M2-F2
2924:M2-F1
2919:HL-10
2914:HiMAT
2781:X-47C
2776:X-47B
2745:X-44
2633:X-24C
2392:Viper
2382:Venom
2377:Valor
2342:Sioux
2307:Kiowa
2247:Creek
2242:Cobra
2205:Names
2196:XV-15
2186:XP-52
2131:D-292
2126:D-255
2121:D-188
2064:MQ-8C
2043:TR918
2038:AW609
2033:V-280
2028:V-247
1960:214ST
1897:TH-67
1892:OH-58
1887:TH-57
1880:UH-1Y
1875:UH-1N
1863:H-13J
1823:AH-1Z
1818:Twins
1773:XP-83
1768:XP-77
1738:YFM-1
1722:D-292
1717:D-255
1712:D-188
1328:214ST
490:Notes
359:root:
317:Crew:
282:near
248:Su-24
2909:AD-1
2889:X-66
2884:X-65
2879:X-64
2874:X-63
2869:X-62
2864:X-61
2859:X-60
2854:X-59
2849:X-58
2844:X-57
2839:X-56
2834:X-55
2829:X-54
2824:X-53
2819:X-52
2814:X-51
2798:X-50
2793:X-49
2788:X-48
2771:X-47
2766:X-46
2761:X-45
2741:X-43
2736:X-42
2731:X-41
2726:X-40
2721:X-39
2716:X-38
2711:X-37
2706:X-36
2701:X-35
2696:X-34
2691:X-33
2686:X-32
2681:X-31
2676:X-30
2671:X-29
2666:X-28
2661:X-27
2656:X-26
2640:X-25
2628:X-24
2623:X-23
2618:X-22
2613:X-21
2608:X-20
2603:X-19
2598:X-18
2593:X-17
2588:X-16
2583:X-15
2578:X-14
2573:X-13
2568:X-12
2563:X-11
2558:X-10
2267:Huey
2191:XV-3
2176:X-22
2171:X-16
2166:X-14
2141:L-39
2057:UAVs
2023:V-22
1870:UH-1
1858:H-13
1763:P-76
1758:P-63
1753:P-59
1743:P-39
717:and
645:ISBN
630:ISBN
607:2019
575:ISBN
388:1 Γ
366:tip:
254:and
246:and
238:and
230:and
212:Mach
194:spin
185:and
133:The
114:1958
41:Type
2553:X-9
2548:X-8
2543:X-7
2538:X-6
2533:X-5
2528:X-4
2523:X-3
2518:X-2
2513:X-1
2488:S-5
2483:S-4
2478:S-3
2473:S-2
2468:S-1
2161:X-5
2156:X-2
2151:X-1
2116:533
2111:201
2106:ATV
2090:440
2085:417
2080:400
2048:QTR
2007:525
2002:505
1997:430
1992:429
1987:427
1982:412
1977:407
1972:230
1967:222
1955:214
1950:212
1945:210
1940:206
1935:205
1930:204
1923:47J
1840:360
1830:309
1805:207
1748:XFL
1705:918
1695:911
1685:680
1675:646
1665:609
1655:599
1645:583
1635:576
1625:548
1615:540
1605:533
1595:525
1585:505
1575:449
1570:448
1565:447
1560:446
1555:445
1550:444
1545:443
1540:442
1535:441
1530:440
1520:430
1515:429
1510:428
1505:427
1495:417
1490:416
1485:415
1480:414
1475:413
1470:412
1465:411
1460:410
1455:409
1450:408
1445:407
1440:406
1430:400
1420:360
1410:309
1400:301
1390:249
1380:230
1370:222
1365:221
1360:220
1355:219
1350:218
1345:217
1340:216
1335:215
1323:214
1318:213
1313:212
1308:211
1303:210
1298:209
1293:208
1288:207
1283:206
1278:205
1273:204
1268:203
1263:202
1258:201
1253:200
1243:130
1238:129
1233:128
1228:127
1223:126
1218:125
1213:124
1208:123
1203:122
1198:121
1193:120
1188:119
1183:118
1178:117
1173:116
1168:115
1163:114
1158:113
1153:112
1148:111
1143:110
1138:109
1133:108
1128:107
1123:106
1118:105
1113:104
1108:103
1103:102
1098:101
431:0.5
278:at
22:X-5
2978::
1918:47
1088:69
1083:68
1078:67
1073:66
1068:65
1063:64
1058:63
1053:62
1048:61
1043:60
1038:59
1033:58
1028:57
1023:56
1018:55
1013:54
1008:53
1003:52
998:51
993:50
988:49
983:48
971:47
966:46
961:45
956:44
951:43
946:42
941:41
936:40
921:38
916:37
911:36
906:35
901:34
896:33
891:32
886:31
881:30
876:29
871:28
866:27
861:26
856:25
851:24
846:23
841:22
836:21
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