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slung from the high wing, with two engines in the inboard pod and one engine in the outboard nacelle. To reduce complexity and increase commonality, it was proposed that a higher-rated engine be selected such that one engine could be mounted in each nacelle.
272:
The B-56 program was canceled in
December 1952 before conversion of the prototype was started. The unconverted B-47 was relegated to a ground instructional airframe and in the late 1960s was in use at the
249:
A contract was signed with Boeing in
January 1950, calling for rework of one aircraft. A B-47B-20-BW (s/n 50-082) was earmarked for the conversion. The date for first flight was projected as April 1951.
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Picture of a B-47E. Clearly visible are the four engine nacelles with the six engines, which were to be replaced by four uniform nacelles and engines
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Designation for a single B-47 to be re-engined with four YJ71-A-5 engines, later re-designated YB-56 and YB-47C but was not converted.
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was proposed, however problems with this engine meant that this was not feasible for the by-then redesignated B-56A. The
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turbojet engine was being developed during the late 1940s, and it was provisionally rated at 8,500 lb
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246:(139 kN) in the production B-47. Thus the conversion would be lighter, simpler and more powerful.
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265:(76 kN) thrust, was also considered, but that engine was still in development, and the
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Designation for production variant, cancelled and not built.
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for a re-engined version of the
American jet-powered medium
1979:
Cancelled military aircraft projects of the United States
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U.S.Military
Aircraft Designations and Serials since 1909
170:. The original designation for this modification was
308:3-view line drawing of the Boeing B-56A Stratojet
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395:List of military aircraft of the United States
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425:, Aero Publishers, Inc., 1969. LCCN 62-15969
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69:Learn how and when to remove this message
552:bomber designations, Army/Air Force and
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32:This article includes a list of general
16:Reconnaissance bomber proposal by Boeing
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435:National Museum fact sheet Boeing B-56A
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347:1,428 sq ft (132.7 m)
335:116 ft 0 in (35.36 m)
329:107 ft 1 in (32.64 m)
261:, eventually rated at 17,000 lb
18:
206:. The engines were mounted in four
13:
341:28 ft 0 in (8.53 m)
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38:it lacks sufficient corresponding
14:
2000:
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474:. Midland Counties Publications.
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23:
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194:turbojets, each rated at 5,200
190:The B-47 was equipped with six
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1:
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222:(38 kN) or 9,700 lb
275:Naval Air Facility El Centro
7:
1195:Fighter-bomber, in F-series
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2005:
267:Boeing B-52 Stratofortress
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440:October 14, 2012, at the
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97:Jet reconnaissance bomber
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1969:Boeing military aircraft
1277:Fighters/attack aircraft
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1866:Experimental/prototypes
1708:Patrol and surveillance
390:List of bomber aircraft
314:General characteristics
259:Pratt & Whitney J57
230:. Thus 4 Ă— 8500 lb
53:more precise citations.
470:Andrade, John (1979).
309:
300:Specifications (XB-56)
277:as an egress trainer.
187:
178:Design and development
1174:Redesignated A-series
504:at Wikimedia Commons
373:Boeing B-47 Stratojet
307:
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147:Boeing B-47 Stratojet
1144:Tri-Service sequence
423:U.S. Bombers: B1-B70
192:General Electric J47
133:None (not converted)
455:Andrade 1979, p. 56
367:Related development
89:General information
1984:High-wing aircraft
562:Original sequences
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226:(43 kN) with
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158:was a proposal by
1989:Strategic bombers
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1271:military aircraft
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1116:Long-range bomber
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421:Jones, Lloyd S.:
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355:Allison YJ71-A-5
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242:= 31,200 lb
234:= 34,000 lb
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105:United States
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73:
70:
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59:February 2019
52:
48:
42:
41:
35:
30:
21:
20:
1878:Bird of Prey
1489:
1019:
965:
673:Heavy bomber
571:Light bomber
502:Boeing XB-56
494:
471:
463:Bibliography
430:
422:
383:
382:
378:Boeing XB-55
366:
365:
350:
344:
338:
332:
326:
320:
313:
311:
271:
252:
248:
213:
196:pounds-force
189:
171:
156:Boeing XB-56
155:
153:
130:Number built
111:Manufacturer
65:
56:
37:
1888:Phantom Ray
1883:Phantom Eye
1873:AFTI/F-111A
1815:Drones/UAVs
1118:(1935–1936)
705:(1930–1962)
564:(1924–1930)
554:Tri-Service
351:Powerplant:
255:Allison J71
228:afterburner
216:Allison J35
51:introducing
1963:Categories
401:References
345:Wing area:
34:references
1399:F/A-18E/F
333:Wingspan:
198:(23
1974:Quadjets
1657:Trainers
438:Archived
362:See also
357:turbojet
281:Variants
208:nacelles
125:Canceled
1827:CQM-121
1796:OC-135B
1413:Bombers
1284:PW-9/FB
556:systems
339:Height:
327:Length:
138:History
47:improve
1893:Skyfox
1822:YQM-94
1806:WC-135
1801:RC-135
1791:NC-135
1735:EC-135
1684:XAT-15
1648:KC-767
1633:KC-137
1628:KC-135
1562:CC-137
1435:Y1B-20
1404:EA-18G
1379:F-15EX
1269:Boeing
1207:FB-111
1035:RB-57F
1030:RB-57D
904:NB-36H
478:
292:RB-56A
204:thrust
172:YB-47C
164:bomber
160:Boeing
122:Status
116:Boeing
36:, but
1948:YAL-1
1852:MQ-28
1847:MQ-27
1842:MQ-25
1837:RQ-21
1832:MQ-18
1775:E-767
1740:EC-18
1679:PT-27
1674:PT-18
1669:PT-17
1664:PT-13
1643:KC-46
1638:KC-10
1623:KC-97
1618:KB-50
1613:KB-29
1597:CT-43
1582:VC-25
1567:YC-14
1557:C-137
1552:C-135
1536:C-108
1495:XB-59
1490:XB-56
1485:XB-55
1460:XB-44
1455:YB-40
1450:XB-39
1445:XB-38
1425:XB-15
1394:AV-8B
1384:YF-22
1374:F-15E
1364:XP-32
1349:XP-15
1216:Other
1202:FB-22
1135:BLR-3
1130:BLR-2
1125:BLR-1
988:B-50C
966:B-47C
899:B-36G
857:B-29D
643:LB-14
638:LB-13
633:LB-12
628:LB-11
623:LB-10
546:USAAF
542:USAAC
538:USAAS
406:Notes
321:Crew:
286:XB-56
1943:X-53
1938:X-51
1933:X-50
1928:X-48
1923:X-45
1918:X-40
1913:X-37
1908:X-36
1903:X-32
1898:X-20
1857:X-50
1770:E-10
1725:XP3B
1720:XPBB
1694:T-45
1689:T-43
1592:C-40
1587:C-32
1577:C-22
1572:C-17
1531:C-98
1526:C-97
1521:C-75
1516:C-73
1480:B-54
1475:B-52
1470:B-50
1465:B-47
1440:B-29
1430:B-17
1420:YB-9
1389:F-22
1359:P-29
1354:P-26
1344:P-12
1339:XP-9
1334:XP-8
1329:XP-7
1324:XP-4
1319:XF8B
1314:XF7B
1309:XF6B
1304:XF5B
1223:B-21
1186:B-26
1181:B-20
1107:B-71
1102:B-70
1097:B-69
1092:B-68
1087:B-67
1082:B-66
1077:B-65
1072:B-64
1067:B-63
1062:B-62
1057:B-61
1052:B-60
1047:B-59
1042:B-58
1025:B-57
1020:B-56
1015:B-55
1010:B-54
1005:B-53
1000:B-52
995:B-51
983:B-50
978:B-49
973:B-48
961:B-47
956:B-46
951:B-45
946:B-44
941:B-43
936:B-42
931:B-41
926:B-40
921:B-39
916:B-38
911:B-37
894:B-36
889:B-35
884:B-34
879:B-33
874:B-32
869:B-31
864:B-30
852:B-29
847:B-28
842:B-27
837:B-26
832:B-25
827:B-24
822:B-23
817:B-22
812:B-21
807:B-20
802:B-19
797:B-18
792:B-17
787:B-16
782:B-15
777:B-14
772:B-13
767:B-12
762:B-11
757:B-10
690:HB-3
685:HB-2
680:HB-1
618:LB-9
613:LB-8
608:LB-7
603:LB-6
598:LB-5
593:LB-4
588:LB-3
583:LB-2
578:LB-1
550:USAF
476:ISBN
353:4 Ă—
214:The
154:The
94:Type
84:B-56
1765:E-8
1760:E-7
1755:E-6
1750:E-4
1745:E-3
1730:P-8
1715:XPB
1699:T-7
1500:B-1
1369:818
1299:F4B
1294:F3B
1289:F2B
1158:B-2
1153:B-1
752:B-9
747:B-8
742:B-7
737:B-6
732:B-5
727:B-4
722:B-3
717:B-2
712:B-1
664:B-2
659:B-1
1965::
448:^
414:^
202:)
200:kN
174:.
1261:e
1254:t
1247:v
548:/
544:/
540:/
530:e
523:t
516:v
484:.
323:3
263:f
244:f
240:f
236:f
232:f
224:f
220:f
72:)
66:(
61:)
57:(
43:.
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