210:
engine, the JB-4 was intended to give an improved standoff range as opposed to its unpowered predecessor. In addition, the addition of an engine made the missile capable of being ground-launched as well. However the requirement to carry fuel for the engine meant that the size of the JB-4's warhead
235:
The JB-4 entered the flight testing stage in
January 1945. The missile demonstrated the ability to cruise at over 400 miles per hour (640 km/h); however, the television-guidance concept suffered from the limitations of the technology of the time, the pictures being difficult to make out in
226:
transmitter broadcasting a television signal from a camera in the missile's nose to a remote operator. The operator, viewing the transmitted picture, would then transmit commands to the missile via radio, correcting the missile's course to ensure striking the target.
236:
anything except completely clear weather. The missile also suffered from reliability issues; these, combined with the end of World War II in August 1945, resulted in the termination of the project, with none of the JB-4s built seeing operational service.
31:
814:
829:
819:
513:
391:
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486:
491:
211:
was limited to 750 pounds (340 kg), compared to the 2,000 pounds (910 kg) bomb that formed the core of the GB-4.
522:
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72:
725:
172:
41:
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184:
336:
768:
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467:
406:
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370:
223:
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572:
549:
203:
glide bomb, which had entered service with the U.S. Army Air Forces in 1944. Powered by a
187:, the JB-4 reached the flight-testing stage before being cancelled at the end of the war.
439:
419:
793:
655:
647:
539:
808:
460:
444:
Directory of U.S. Military
Rockets and Missiles Appendix 1: Early Missiles and Drones
424:
Directory of U.S. Military
Rockets and Missiles Appendix 1: Early Missiles and Drones
702:
362:
196:
180:
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559:
219:
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124:
30:
207:
127:
471:
410:
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215:
815:
Abandoned military rocket and missile projects of the United States
384:
Near Miss: The Army Air Forces' Guided Bomb
Program in World War II
367:
The
Illustrated Encyclopedia of the World's Rockets & Missiles
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733:
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83:
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55:
47:
37:
21:
459:
401:Ordway, Frederick Ira; Ronald C. Wakeford (1960).
830:World War II guided missiles of the United States
525:missile and guided bomb designations, 1941–1947
507:
8:
820:Air-to-surface missiles of the United States
199:in Ohio, the JB-4 was a modification of the
195:Developed under the project code MX-607 at
514:
500:
492:
403:International Missile and Spacecraft Guide
18:
16:American air-to-surface missile prototype
466:. New York: Lothrop, Lee & Shepard.
462:Guided Missiles: Rockets & Torpedoes
310:
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249:
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265:
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261:
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222:/radio-command guidance, with an
185:television/radio-command guidance
290:Ordway and Wakeford 1960, p.186.
218:construction, the JB-4 utilised
29:
386:. Lanham, MD: Scarecrow Press.
111:2,000 pounds (910 kg) bomb
1:
523:United States Army Air Forces
177:United States Army Air Forces
73:United States Army Air Forces
369:. London: Salamander Books.
157:445 mph (716 km/h)
87:3,000 pounds (1,400 kg)
716:* Design Concepts not Built
846:
825:Pulsejet-powered aircraft
446:. designation-systems.net
426:. designation-systems.net
405:. New York: McGraw-Hill.
382:Hanle, Donald J. (2007).
115:
48:Place of origin
28:
438:Parsch, Andreas (2024).
418:Parsch, Andreas (2003).
171:, was an early American
191:Design and development
173:air-to-surface missile
147:75 miles (121 km)
42:Air-to-surface missile
487:B - Bombs/Bomb Units
458:Ross, Frank (1951).
214:Utilising primarily
95:12 feet (3.7 m)
348:Gunston 1979, p.33.
335:, Volume 31. 1948.
231:Operational history
108:Warhead weight
333:Air Force Magazine
323:Hanle 2007, p.114.
314:Hanle 2007, p.268.
802:
801:
717:
393:978-0-8108-5776-6
278:Ross 1951, p.115.
175:developed by the
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61:In service
56:Service history
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135:(2.9 kN)
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532:Bomb gliders
461:
448:. Retrieved
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428:. Retrieved
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402:
383:
366:
355:Bibliography
344:
332:
328:
319:
302:Parsch 2003.
274:
269:Parsch 2024.
234:
213:
197:Wright Field
194:
181:World War II
168:
164:
162:
69:Used by
560:Glide bombs
440:"JB Series"
420:"GB Series"
141:Operational
131:660 lb
809:Categories
472:B001LGSGX0
450:2011-02-04
430:2011-02-02
411:B000MAEGVC
375:B002K4M822
240:References
220:television
666:Jet bombs
205:Ford PJ31
125:Ford PJ31
365:(1979).
224:AN/AXT-2
208:pulsejet
183:. Using
128:pulsejet
92:Wingspan
216:plywood
179:during
100:Warhead
470:
409:
390:
373:
169:MX-607
121:Engine
794:VB-13
789:VB-12
784:VB-11
779:VB-10
711:JB-10
707:JB-9*
699:JB-7*
696:JB-6*
693:JB-5*
638:GB-15
633:GB-14
628:GB-13
623:GB-12
618:GB-11
613:GB-10
245:Notes
143:range
23:JB-4
774:VB-9
769:VB-8
764:VB-7
759:VB-6
754:VB-5
749:VB-4
744:VB-3
739:VB-2
734:VB-1
703:JB-8
689:JB-4
684:JB-3
679:JB-2
674:JB-1
656:GT-1
608:GB-9
603:GB-8
598:GB-7
593:GB-6
588:GB-5
583:GB-4
578:GB-3
573:GB-2
568:GB-1
550:BG-3
545:BG-2
540:BG-1
468:ASIN
407:ASIN
388:ISBN
371:ASIN
337:p.25
201:GB-4
165:JB-4
163:The
84:Mass
64:1945
38:Type
811::
442:.
422:.
307:^
295:^
283:^
252:^
515:e
508:t
501:v
474:.
453:.
433:.
413:.
396:.
377:.
339:.
133:f
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
