1152:
1172:
173:
systems to be installed depending on mission needs. Capable of operating in any weather conditions, recovery following the completion of the SD-4's mission was to be by
291:
115:
force; competing designs for the requirement were developed by
Republic Aviation, which proposed a 'clean-sheet' aircraft given the designation SD-4 Swallow, and
111:
Contracts were awarded by the U.S. Army in 1960 for development of a high-speed, long-range reconnaissance drone to gather targeting information for the Army's
522:
1088:
411:
1162:
348:
965:
96:
296:
515:
960:
812:
624:
1167:
1081:
1030:
970:
930:
918:
817:
802:
792:
660:
629:
619:
180:
Before any flight test vehicles were constructed, the program was cancelled in
January of 1961 due to cost constraints.
1015:
1010:
797:
639:
100:
1157:
1147:
1066:
508:
112:
888:
878:
787:
599:
913:
807:
614:
1074:
230:
84:
353:
1005:
940:
757:
722:
675:
139:
459:
1126:
1116:
1111:
772:
665:
279:
154:
124:
103:, it was cancelled before the first prototype could be completed, and did not see operational service.
1055:
950:
925:
848:
767:
762:
747:
727:
717:
594:
589:
166:
1045:
1040:
1035:
1025:
1020:
995:
990:
985:
980:
975:
945:
935:
903:
858:
853:
843:
908:
782:
752:
701:
696:
691:
162:
147:
116:
92:
61:
531:
488:
480:
464:
426:
407:
88:
51:
1050:
1000:
955:
644:
634:
439:
1106:
898:
893:
883:
838:
609:
604:
566:
551:
546:
158:
1141:
873:
868:
863:
833:
556:
561:
120:
444:
Directory of U.S. Military
Rockets and Missiles, Appendix 4: Undesignated Vehicles
500:
135:
174:
233:
406:. Reston, Virginia: American Institute of Aeronautics and Astronautics.
142:
turbojet, the military version of the civilian JT12 engine; two Arrow 2
492:
430:
170:
1097:
United States Army Combat
Surveillance Agency drone designations
143:
1070:
504:
404:
Unmanned
Aviation: A Brief History of Unmanned Aerial Vehicles
468:. Vol. 68, no. 3. New York: Ziff-Davis Publishing
1153:
Cancelled military aircraft projects of the United States
826:
740:
710:
684:
653:
582:
575:
539:
274:
Aircraft of comparable role, configuration, and era
421:Ordway, Frederick Ira; Ronald C. Wakeford (1960).
245:Newcome states the SD-4 and SD-5 were subsonic.
1173:Unmanned military aircraft of the United States
292:List of military aircraft of the United States
1082:
516:
8:
153:In a similar fashion to Republic's smaller
1089:
1075:
1067:
579:
523:
509:
501:
423:International Missile and Spacecraft Guide
487:. London: Sampson Low, Marston & Co.
485:Jane's All the World's Aircraft 1959–1960
138:configuration, with power provided by a
134:for its overall system, the SD-4 was of
312:
258:300 mi (480 km, 260 nmi)
18:
366:
364:
362:
322:
320:
318:
316:
157:drone, the Swallow was equipped with
150:from a specially-designed trailer.
16:Canceled reconnaissance drone project
7:
349:Aviation Week & Space Technology
334:
332:
236:, 2,900 lbf (13 kN) thrust
458:Stanfield, Robert I. (March 1961).
146:-type rocket boosters allowing for
119:, which developed a variant of the
370:Ordway and Wakeford 1960, p.USA51.
217:11 ft 6 in (3.51 m)
211:30 ft 5 in (9.27 m)
14:
297:List of unmanned aerial vehicles
460:"America's First Corporate Jet"
438:Parsch, Andreas (5 May 2004).
264:60,000 ft (18,000 m)
1:
402:Newcome, Lawrence R. (2004).
223:3,500 lb (1,588 kg)
1163:Single-engined jet aircraft
130:Given the full designation
101:tactical ballistic missiles
1189:
161:nose section allowing for
113:tactical ballistic missile
95:. Intended for use by the
1102:
425:. New York: McGraw-Hill.
231:Pratt & Whitney J60-3
21:
379:Jane's 1959–1960, p.377.
83:was an early high-speed
440:"Republic SD-4 Swallow"
196:General characteristics
140:Pratt & Whitney J60
107:Design and development
97:U.S. Army Signal Corps
534:and Seversky aircraft
446:. Designation-Systems
388:Stanfield 1961, p.25.
280:Fairchild SD-5 Osprey
123:decoy missile as the
81:Republic SD-4 Swallow
167:infrared photography
144:jet-assisted takeoff
85:reconnaissance drone
30:Reconnaissance drone
1168:Delta-wing aircraft
326:Newcome 2004, p.75.
352:volume 73 (1960),
163:aerial photography
159:an interchangeable
148:zero length launch
117:Fairchild Aircraft
93:United States Army
62:United States Army
58:Primary user
1158:Mid-wing aircraft
1148:Republic aircraft
1135:
1134:
1064:
1063:
736:
735:
576:Republic aircraft
540:Seversky aircraft
481:Taylor, John W.R.
413:978-1-56347-644-0
89:Republic Aviation
77:
76:
52:Republic Aviation
1180:
1091:
1084:
1077:
1068:
580:
525:
518:
511:
502:
496:
476:
474:
473:
454:
452:
451:
434:
417:
389:
386:
380:
377:
371:
368:
357:
345:
339:
336:
327:
324:
262:Service ceiling:
244:
198:
70:
40:
32:Type of aircraft
19:
1188:
1187:
1183:
1182:
1181:
1179:
1178:
1177:
1138:
1137:
1136:
1131:
1098:
1095:
1065:
1060:
827:Project numbers
822:
732:
706:
680:
649:
571:
535:
529:
499:
479:
471:
469:
457:
449:
447:
437:
420:
414:
401:
392:
387:
383:
378:
374:
369:
360:
346:
342:
337:
330:
325:
314:
305:
271:
240:
194:
186:
109:
68:
39:National origin
38:
33:
17:
12:
11:
5:
1186:
1184:
1176:
1175:
1170:
1165:
1160:
1155:
1150:
1140:
1139:
1133:
1132:
1130:
1129:
1124:
1119:
1114:
1109:
1103:
1100:
1099:
1096:
1094:
1093:
1086:
1079:
1071:
1062:
1061:
1059:
1058:
1053:
1048:
1043:
1038:
1033:
1028:
1023:
1018:
1013:
1008:
1003:
998:
993:
988:
983:
978:
973:
968:
963:
958:
953:
948:
943:
938:
933:
928:
923:
922:
921:
911:
906:
901:
896:
891:
886:
881:
876:
871:
866:
861:
856:
851:
846:
841:
836:
830:
828:
824:
823:
821:
820:
815:
813:Thunderscreech
810:
805:
800:
795:
790:
785:
780:
775:
770:
765:
760:
755:
750:
744:
742:
738:
737:
734:
733:
731:
730:
725:
720:
714:
712:
711:Civil aircraft
708:
707:
705:
704:
699:
694:
688:
686:
682:
681:
679:
678:
673:
668:
663:
657:
655:
654:Reconnaissance
651:
650:
648:
647:
642:
637:
632:
627:
622:
617:
612:
607:
602:
597:
592:
586:
584:
577:
573:
572:
570:
569:
564:
559:
554:
549:
543:
541:
537:
536:
530:
528:
527:
520:
513:
505:
498:
497:
477:
455:
435:
418:
412:
398:
391:
390:
381:
372:
358:
340:
328:
311:
304:
301:
300:
299:
294:
283:
282:
270:
267:
266:
265:
259:
253:
250:Maximum speed:
238:
237:
224:
218:
212:
206:
185:
184:Specifications
182:
136:tailless delta
108:
105:
75:
74:
71:
65:
64:
59:
55:
54:
49:
45:
44:
43:United States
41:
35:
34:
31:
28:
24:
23:
15:
13:
10:
9:
6:
4:
3:
2:
1185:
1174:
1171:
1169:
1166:
1164:
1161:
1159:
1156:
1154:
1151:
1149:
1146:
1145:
1143:
1128:
1125:
1123:
1120:
1118:
1115:
1113:
1110:
1108:
1105:
1104:
1101:
1092:
1087:
1085:
1080:
1078:
1073:
1072:
1069:
1057:
1054:
1052:
1049:
1047:
1044:
1042:
1039:
1037:
1034:
1032:
1029:
1027:
1024:
1022:
1019:
1017:
1014:
1012:
1009:
1007:
1004:
1002:
999:
997:
994:
992:
989:
987:
984:
982:
979:
977:
974:
972:
969:
967:
964:
962:
959:
957:
954:
952:
949:
947:
944:
942:
939:
937:
934:
932:
929:
927:
924:
920:
917:
916:
915:
912:
910:
907:
905:
902:
900:
897:
895:
892:
890:
887:
885:
882:
880:
877:
875:
872:
870:
867:
865:
862:
860:
857:
855:
852:
850:
847:
845:
842:
840:
837:
835:
832:
831:
829:
825:
819:
818:Thunderstreak
816:
814:
811:
809:
806:
804:
801:
799:
796:
794:
793:Thunderceptor
791:
789:
786:
784:
781:
779:
776:
774:
771:
769:
766:
764:
761:
759:
756:
754:
751:
749:
746:
745:
743:
739:
729:
726:
724:
721:
719:
716:
715:
713:
709:
703:
700:
698:
695:
693:
690:
689:
687:
683:
677:
674:
672:
669:
667:
664:
662:
659:
658:
656:
652:
646:
643:
641:
638:
636:
633:
631:
628:
626:
623:
621:
618:
616:
613:
611:
608:
606:
603:
601:
598:
596:
593:
591:
588:
587:
585:
581:
578:
574:
568:
565:
563:
560:
558:
555:
553:
550:
548:
545:
544:
542:
538:
533:
526:
521:
519:
514:
512:
507:
506:
503:
494:
490:
486:
482:
478:
467:
466:
461:
456:
445:
441:
436:
432:
428:
424:
419:
415:
409:
405:
400:
399:
397:
396:
385:
382:
376:
373:
367:
365:
363:
359:
355:
351:
350:
344:
341:
335:
333:
329:
323:
321:
319:
317:
313:
310:
309:
302:
298:
295:
293:
290:
289:
288:
287:
286:Related lists
281:
278:
277:
276:
275:
268:
263:
260:
257:
254:
251:
248:
247:
246:
243:
235:
232:
228:
225:
222:
221:Gross weight:
219:
216:
213:
210:
207:
204:
201:
200:
199:
197:
192:
190:
183:
181:
178:
176:
172:
168:
164:
160:
156:
151:
149:
145:
141:
137:
133:
128:
126:
122:
118:
114:
106:
104:
102:
98:
94:
90:
87:developed by
86:
82:
72:
67:
66:
63:
60:
57:
56:
53:
50:
48:Manufacturer
47:
46:
42:
37:
36:
29:
26:
25:
22:SD-4 Swallow
20:
1121:
803:Thunderflash
798:Thunderchief
777:
670:
484:
470:. Retrieved
463:
448:. Retrieved
443:
422:
403:
395:Bibliography
394:
393:
384:
375:
347:
343:
307:
306:
285:
284:
273:
272:
261:
255:
249:
241:
239:
226:
220:
214:
208:
202:
195:
193:
188:
187:
179:
152:
131:
129:
110:
80:
78:
69:Number built
788:Thunderbolt
338:Parsch 2004
242:Performance
227:Powerplant:
191:Parsch 2004
125:SD-5 Osprey
1142:Categories
808:Thunderjet
783:Thunderbug
493:B002G60XF8
472:2017-12-15
450:2017-12-15
431:B000MAEGVC
303:References
121:Bull Goose
99:to target
308:Citations
215:Wingspan:
189:Data from
175:parachute
685:Missiles
583:Fighters
532:Republic
483:(1960).
269:See also
252:Mach 1.5
234:turbojet
132:AN/USD-4
91:for the
778:Swallow
773:Snooper
758:Rainbow
209:Length:
1056:AP-106
1051:AP-100
768:Seabee
763:Rocket
748:Lancer
661:RF-84F
645:AP-100
635:XF-103
625:XF-84H
491:
465:Flying
429:
410:
354:p. 361
256:Range:
1046:AP-96
1041:AP-95
1036:AP-90
1026:AP-76
1021:AP-75
1016:AP-71
1011:AP-63
1006:AP-60
1001:AP-57
996:AP-55
991:AP-54
986:NP-52
981:NP-50
976:NP-49
971:NP-48
966:AP-47
961:AP-46
956:AP-44
951:AP-43
946:AP-42
941:AP-41
936:AP-38
931:AP-31
926:AP-24
914:AP-23
909:AP-22
904:AP-21
899:AP-19
894:AP-18
889:AP-16
884:AP-12
879:AP-10
741:Names
676:XF-12
640:F-105
630:XF-91
620:F-84F
610:XP-72
605:XP-69
567:XP-41
547:SEV-3
203:Crew:
171:radar
169:, or
27:Role
1127:SD-5
1122:SD-4
1117:SD-3
1112:SD-2
1107:SD-1
874:AP-9
869:AP-8
864:AP-7
859:AP-6
854:AP-5
849:AP-4
844:AP-3
839:AP-2
834:AP-1
753:Loon
728:RC-3
723:RC-2
718:RC-1
692:JB-2
671:SD-4
666:SD-3
615:F-84
600:P-47
595:P-44
590:P-43
562:A8V1
557:P-35
552:BT-8
489:ASIN
427:ASIN
408:ISBN
229:1 ×
205:None
155:SD-3
79:The
919:M/X
702:KUW
697:KGW
177:.
1144::
1031:85
462:.
442:.
361:^
331:^
315:^
165:,
127:.
73:0
1090:e
1083:t
1076:v
524:e
517:t
510:v
495:.
475:.
453:.
433:.
416:.
356:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.