136:, where they currently remain. Airframe 845A, which was converted into a piloted aircraft, was later used as a platform for atmospheric research. It continued flying as SPTVAR (Special Purpose Test Vehicle for Atmospheric Research) until the late 1990s. Its missions included flights over the Langmuir Laboratory facility in south-central New Mexico, flying through thunderstorms and making measurements of the electric field inside clouds. The other airframe, still configured as the original drone design, is in storage at the same facility.
112:. Test flights began in April 1972; during testing, one of the prototypes stayed aloft for almost 28 hours, however it failed to meet the Air Force's requirement of a 40,000 feet (12,000 m) service ceiling. In 1973 The Model 845A was cancelled (along with the XQM-93), the program being replaced by
1187:
1182:
1177:
269:
133:
88:
was a remotely piloted aircraft developed in the United States in the late 1960s and early 1970s for use as a communications relay in the
Vietnam War.
434:
1202:
1104:
1192:
349:
427:
113:
1197:
890:
647:
642:
242:
399:
1089:
547:
527:
467:
295:
1172:
420:
125:
443:
66:
1099:
762:
1151:
1141:
971:
966:
905:
880:
752:
742:
737:
722:
712:
627:
374:
956:
672:
97:
602:
577:
562:
522:
941:
607:
517:
341:
311:
230:
101:
487:
1146:
961:
757:
727:
717:
707:
702:
687:
345:
109:
951:
946:
839:
829:
824:
667:
637:
542:
537:
382:
365:
Winn, William (20 April 1993). "Aircraft
Measurement of Electric Field: Self-Calibration".
992:
819:
622:
617:
447:
129:
48:
378:
662:
191:
412:
1166:
477:
247:
997:
987:
925:
910:
900:
895:
885:
875:
834:
798:
793:
788:
778:
747:
732:
697:
692:
682:
677:
657:
632:
587:
572:
507:
316:
Directory of U.S. Military
Rockets and Missiles Appendix 4: Undesignated Vehicles
124:
After the cancellation of the program, two 845 airframes were transferred by the
1120:
1068:
1043:
920:
870:
865:
860:
855:
814:
612:
592:
582:
552:
532:
492:
1058:
1053:
1048:
1022:
783:
652:
597:
502:
497:
482:
257:
105:
1094:
1084:
1063:
915:
567:
557:
512:
472:
462:
252:
1038:
1017:
1013:
398:
This article contains material that originally came from the web article
386:
96:
Two prototypes were built as part of the United States Air Force's
416:
194:
horizontally opposed piston engine, 200 hp (150 kW)
1188:
Cancelled military aircraft projects of the United States
104:
sailplane and similar in configuration to the competing
1129:
1113:
1077:
1031:
1006:
980:
934:
848:
807:
771:
455:
237:
Aircraft of comparable role, configuration, and era
404:by Greg Goebel, which exists in the Public Domain.
270:List of military aircraft of the United States
100:program, these machines also being based on a
1183:Unmanned aerial vehicles of the United States
428:
8:
1178:1970s United States special-purpose aircraft
134:Langmuir Laboratory for Atmospheric Research
435:
421:
413:
209:150 mph (240 km/h, 130 kn)
338:The Illustrated encyclopedia of aviation
305:
303:
287:
285:
172:59 ft 1.25 in (18.0150 m)
281:
166:25 ft 4.75 in (7.7407 m)
15:
7:
292:Aviation Week & Space Technology
14:
178:9 ft 6 in (2.90 m)
1203:Single-engined tractor aircraft
1:
184:2,320 lb (1,052 kg)
1193:Aircraft first flown in 1972
243:Beechcraft QU-22 Pave Eagle
1219:
336:Robinson, Anthony (1979).
27:Communications relay drone
86:Martin Marietta Model 845
18:
401:Unmanned Aerial Vehicles
310:Parsch, Andreas (2004).
140:Specifications (variant)
126:Office of Naval Research
1078:Reconnaissance aircraft
340:. Vol. 8. London:
151:General characteristics
67:United States Air Force
312:"Martin Marietta 845A"
92:Design and development
1032:Scout/Torpedo bombers
784:M-156 Russian Clipper
318:. Designation-Systems
192:Lycoming TIO-360-A3B6
1114:Observation aircraft
294:, Volume 98 (1973),
981:Military transports
379:1993JGR....98.7351W
225:Related development
120:Surviving airframes
1198:High-wing aircraft
342:Marshall Cavendish
231:Schweizer SGS 1-34
102:Schweizer SGS 1-34
63:Primary user
1160:
1159:
1007:Military trainers
387:10.1029/93JD00165
373:(D4): 7351–7365.
110:Ling-Temco-Vought
82:
81:
1210:
437:
430:
423:
414:
391:
390:
362:
356:
355:
333:
327:
326:
324:
323:
307:
298:
289:
202:
153:
75:
37:
29:Type of aircraft
16:
1218:
1217:
1213:
1212:
1211:
1209:
1208:
1207:
1173:Martin aircraft
1163:
1162:
1161:
1156:
1130:Martin Marietta
1125:
1109:
1073:
1027:
1002:
976:
935:Maritime patrol
930:
844:
808:Attack aircraft
803:
767:
451:
448:Martin Marietta
441:
411:
395:
394:
367:J. Geophys. Res
364:
363:
359:
352:
344:. p. 854.
335:
334:
330:
321:
319:
309:
308:
301:
290:
283:
278:
222:
198:
149:
142:
132:for use by the
130:New Mexico Tech
122:
94:
73:
49:Martin Marietta
36:National origin
35:
30:
12:
11:
5:
1216:
1214:
1206:
1205:
1200:
1195:
1190:
1185:
1180:
1175:
1165:
1164:
1158:
1157:
1155:
1154:
1149:
1144:
1139:
1133:
1131:
1127:
1126:
1124:
1123:
1117:
1115:
1111:
1110:
1108:
1107:
1102:
1097:
1092:
1087:
1081:
1079:
1075:
1074:
1072:
1071:
1066:
1061:
1056:
1051:
1046:
1041:
1035:
1033:
1029:
1028:
1026:
1025:
1020:
1010:
1008:
1004:
1003:
1001:
1000:
995:
990:
984:
982:
978:
977:
975:
974:
969:
964:
959:
954:
949:
944:
938:
936:
932:
931:
929:
928:
923:
918:
913:
908:
903:
898:
893:
888:
883:
878:
873:
868:
863:
858:
852:
850:
846:
845:
843:
842:
837:
832:
827:
822:
817:
811:
809:
805:
804:
802:
801:
796:
791:
786:
781:
775:
773:
769:
768:
766:
765:
760:
755:
750:
745:
740:
735:
730:
725:
720:
715:
710:
705:
700:
695:
690:
685:
680:
675:
670:
665:
660:
655:
650:
645:
640:
635:
630:
625:
620:
615:
610:
605:
600:
595:
590:
585:
580:
575:
570:
565:
560:
555:
550:
545:
540:
535:
530:
525:
520:
515:
510:
505:
500:
495:
490:
485:
480:
475:
470:
465:
459:
457:
453:
452:
442:
440:
439:
432:
425:
417:
410:
409:External links
407:
406:
405:
393:
392:
357:
351:978-0856855818
350:
328:
299:
280:
279:
277:
274:
273:
272:
261:
260:
255:
250:
245:
234:
233:
221:
218:
217:
216:
210:
207:Maximum speed:
196:
195:
185:
179:
173:
167:
161:
141:
138:
121:
118:
93:
90:
80:
79:
76:
70:
69:
64:
60:
59:
56:
52:
51:
46:
42:
41:
40:United States
38:
32:
31:
28:
25:
21:
20:
13:
10:
9:
6:
4:
3:
2:
1215:
1204:
1201:
1199:
1196:
1194:
1191:
1189:
1186:
1184:
1181:
1179:
1176:
1174:
1171:
1170:
1168:
1153:
1150:
1148:
1145:
1143:
1140:
1138:
1135:
1134:
1132:
1128:
1122:
1119:
1118:
1116:
1112:
1106:
1103:
1101:
1098:
1096:
1093:
1091:
1088:
1086:
1083:
1082:
1080:
1076:
1070:
1067:
1065:
1062:
1060:
1057:
1055:
1052:
1050:
1047:
1045:
1042:
1040:
1037:
1036:
1034:
1030:
1024:
1021:
1019:
1015:
1012:
1011:
1009:
1005:
999:
996:
994:
991:
989:
986:
985:
983:
979:
973:
970:
968:
965:
963:
960:
958:
955:
953:
950:
948:
945:
943:
940:
939:
937:
933:
927:
924:
922:
919:
917:
914:
912:
909:
907:
904:
902:
899:
897:
894:
892:
889:
887:
884:
882:
879:
877:
874:
872:
869:
867:
864:
862:
859:
857:
854:
853:
851:
847:
841:
838:
836:
833:
831:
828:
826:
823:
821:
818:
816:
813:
812:
810:
806:
800:
797:
795:
792:
790:
787:
785:
782:
780:
779:M-130 Clipper
777:
776:
774:
770:
764:
761:
759:
756:
754:
751:
749:
746:
744:
741:
739:
736:
734:
731:
729:
726:
724:
721:
719:
716:
714:
711:
709:
706:
704:
701:
699:
696:
694:
691:
689:
686:
684:
681:
679:
676:
674:
671:
669:
666:
664:
661:
659:
656:
654:
651:
649:
646:
644:
641:
639:
636:
634:
631:
629:
626:
624:
621:
619:
616:
614:
611:
609:
606:
604:
601:
599:
596:
594:
591:
589:
586:
584:
581:
579:
576:
574:
571:
569:
566:
564:
561:
559:
556:
554:
551:
549:
546:
544:
541:
539:
536:
534:
531:
529:
526:
524:
521:
519:
516:
514:
511:
509:
506:
504:
501:
499:
496:
494:
491:
489:
486:
484:
481:
479:
476:
474:
471:
469:
466:
464:
461:
460:
458:
456:Model numbers
454:
449:
445:
438:
433:
431:
426:
424:
419:
418:
415:
408:
403:
402:
397:
396:
388:
384:
380:
376:
372:
368:
361:
358:
353:
347:
343:
339:
332:
329:
317:
313:
306:
304:
300:
297:
293:
288:
286:
282:
275:
271:
268:
267:
266:
265:
264:Related lists
259:
256:
254:
251:
249:
248:Lockheed YO-3
246:
244:
241:
240:
239:
238:
232:
229:
228:
227:
226:
219:
214:
211:
208:
205:
204:
203:
201:
193:
189:
186:
183:
182:Gross weight:
180:
177:
174:
171:
168:
165:
162:
159:
156:
155:
154:
152:
147:
146:
139:
137:
135:
131:
127:
119:
117:
115:
111:
107:
103:
99:
98:Compass Dwell
91:
89:
87:
77:
72:
71:
68:
65:
62:
61:
57:
55:First flight
54:
53:
50:
47:
45:Manufacturer
44:
43:
39:
34:
33:
26:
23:
22:
17:
1136:
400:
370:
366:
360:
337:
331:
320:. Retrieved
315:
291:
263:
262:
236:
235:
224:
223:
212:
206:
199:
197:
187:
181:
175:
169:
163:
157:
150:
148:
144:
143:
123:
114:Compass Cope
95:
85:
83:
74:Number built
200:Performance
188:Powerplant:
58:April 1972
1167:Categories
322:2017-11-09
276:References
258:LTV XQM-93
213:Endurance:
108:design by
19:Model 845
772:Airliners
253:LTV L450F
170:Wingspan:
145:Data from
450:aircraft
220:See also
215:28 hours
1152:X-24A/B
849:Bombers
375:Bibcode
296:page 67
176:Height:
164:Length:
1105:RB-57F
1100:RB-57D
444:Martin
348:
106:XQM-93
1142:SV-5J
1090:M2O-1
926:NBS-1
911:XB-68
901:XB-51
886:XB-27
876:XB-16
871:XB-14
866:XB-13
799:4-0-4
794:3-0-3
789:2-0-2
158:Crew:
24:Role
1147:X-23
1121:XO-4
1095:MS-1
1085:MO-1
947:XP2M
921:MB-1
906:B-57
896:B-48
891:B-33
881:B-26
861:B-12
856:B-10
835:A-45
830:A-30
825:A-23
820:A-22
815:A-15
446:and
346:ISBN
190:1 ×
160:None
84:The
1137:845
1069:T6M
1064:T5M
1059:T4M
1054:T3M
1049:T2M
1023:N2M
993:JRM
988:C-3
972:P7M
967:P6M
962:P5M
957:P4M
952:P3M
942:PBM
763:327
758:321
753:317
748:316
743:313
738:307
733:303
728:290
723:275
718:274
713:272
708:271
703:270
698:259
693:247
688:237
683:234
678:223
673:219
668:210
663:205
658:202
653:193
648:190
643:189
638:187
633:182
628:179
623:170
618:167
613:166
608:162
603:158
598:156
593:146
588:145
583:139
578:133
573:130
568:129
563:127
558:125
553:123
548:122
543:120
538:119
533:118
528:117
383:doi
128:to
1169::
1044:TM
1018:TT
998:RM
916:BM
840:AM
523:85
518:83
513:77
508:75
503:74
498:73
493:71
488:70
483:67
478:66
473:63
468:60
463:57
381:.
371:98
369:.
314:.
302:^
284:^
116:.
78:3
1039:S
1016:/
1014:T
436:e
429:t
422:v
389:.
385::
377::
354:.
325:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.