142:
mail. The sponsons, symmetric in cross section and with a thickness/chord ratio of 12.5%, were entirely metal. The fuselage was aluminium covered, tapering towards the tail with decreasing skin thickness. Like the wings, the rear surfaces were metal structures with fabric covering. The tailplane was mounted a little way up the fin, the latter carrying a generous and rounded rudder, its lower edge blending elegantly into the lines of the lower fuselage. The rudder had a trim tab, but neither it nor the elevators had aerodynamic balances.
138:
each motor. The primary attachment of the wings was not to the fuselage but to the sponson tips, by two pairs of parallel steel struts to mid-wing. On each side, another pair of struts went almost vertically from the sponson to the wing below the outer engine. The outer engines were further supported by struts to the upper fuselage longerons, from which also a pair of inverted V struts supported the central engine.
141:
The hull of the Latécoère 340 had a planing bottom with two steps. It was built around a keel and four longerons and provided a mooring position in the nose, an enclosed cabin for pilot and radio operator and a passenger cabin with four windows on each side. Aft of the cabin there was a space for
137:
engines were mounted close together on top of the wing and out of the spray in well-streamlined cowlings; those of the forward-facing outer engines slimmed finely to the trailing edge. Each engine drove a two-bladed propeller. Flat radiators were placed on the underside of the upper wing, beneath
153:
official. It broke up in the air, killing both Prévot and his mechanic Hoff. The accident was ascribed to pilot error, with the suggestion that in his enthusiasm to demonstrate the aircraft's potential, Prévot exceed the safe speed range. It was the end of the programme, and
149:, piloted by Prévot. During that month and the next, the aircraft's trials went promisingly. It seemed to have the calculated performance and could maintain height under full load on the power of two engines. However, on 2 April 1930 it was demonstrated to a
120:
The Latécoère 340 (sometimes written 34-0) was a three-engined flying boat designed to serve medium-range routes, such as those across the
Mediterranean from France to her African colonies. In general appearance it was similar to the
132:
The quite thick (13.5%) wings were fabric covered over a metal frame. They were of constant chord out to gently curved tips, each carrying two ailerons. The three 400 hp (298 kW) V-12 water-cooled
363:
1150:
356:
1160:
1140:
331:
1145:
349:
129:
both for stability on the water and extra lift in the air. It was smaller than the Latécoère 21, carrying only five passengers.
112:
for middle-distance, overseas routes. The sole prototype was destroyed early in the testing programme, and no more were built.
1155:
146:
372:
235:
134:
1135:
1114:
1109:
1104:
1099:
1094:
1089:
1073:
1068:
1063:
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:
918:
913:
908:
903:
898:
893:
888:
883:
878:
838:
833:
828:
808:
803:
798:
768:
763:
758:
753:
748:
743:
738:
733:
728:
723:
718:
713:
708:
703:
698:
693:
688:
627:
537:
928:
923:
873:
868:
863:
858:
853:
848:
843:
823:
818:
813:
793:
788:
783:
778:
773:
673:
663:
658:
653:
622:
617:
612:
607:
602:
597:
592:
587:
582:
577:
572:
567:
562:
557:
552:
547:
532:
527:
522:
517:
512:
507:
502:
497:
442:
648:
643:
392:
387:
683:
678:
668:
487:
482:
477:
472:
467:
462:
457:
452:
447:
437:
432:
427:
422:
122:
417:
412:
407:
402:
397:
327:
64:
1129:
125:, with a parasol wing bearing two tractor and one central pusher engines, and used
102:
150:
105:
39:
17:
126:
341:
109:
54:
345:
145:
The Latécoère 340 flew for the first time in
February 1930 at
253:
144 km/h (232 mph, 202 kn) at sea level
1082:
636:
380:
216:70 m (753 sq ft) excluding sponsons
238:watercooled V-12 , 298 kW (400 hp) each
67:(La societe industrielle d'aviation Latécoère)
357:
8:
364:
350:
342:
259:7,400 m (24,278 ft) calculated
300:
276:
298:
296:
294:
292:
290:
288:
286:
284:
282:
280:
228:5,610 kg (12,368 lb) maximum
26:
7:
304:
169:
210:4.85 m (15 ft 11 in)
198:14.50 m (47 ft 7 in)
324:Latécoère Les avions et hydravions
204:23.0 m (75 ft 6 in)
25:
1151:Three-engined push-pull aircraft
1:
326:. Paris: Editions Larivière.
222:3,485 kg (7,683 lb)
1161:Aircraft first flown in 1930
147:Saint-Laurent-de-la-Salanque
1141:1930s French civil aircraft
1177:
29:
158:was the only one built.
177:General characteristics
38:Medium-range passenger
116:Design and development
1156:Parasol-wing aircraft
101:was a three-engined,
108:designed in 1929 in
322:Cuny, Jean (1992).
236:Hispano-Suiza 12 Jb
135:Hispano Suiza 12 Jb
1146:Latécoère aircraft
307:, pp. 108–111
88:Primary user
1123:
1122:
95:
94:
16:(Redirected from
1168:
366:
359:
352:
343:
337:
308:
302:
257:Service ceiling:
246:
179:
51:
43:Type of aircraft
27:
21:
1176:
1175:
1171:
1170:
1169:
1167:
1166:
1165:
1126:
1125:
1124:
1119:
1078:
632:
376:
370:
340:
334:
321:
312:
311:
303:
278:
268:
242:
175:
164:
118:
50:National origin
49:
44:
23:
22:
15:
12:
11:
5:
1174:
1172:
1164:
1163:
1158:
1153:
1148:
1143:
1138:
1128:
1127:
1121:
1120:
1118:
1117:
1112:
1107:
1102:
1097:
1092:
1086:
1084:
1080:
1079:
1077:
1076:
1071:
1066:
1061:
1056:
1051:
1046:
1041:
1036:
1031:
1026:
1021:
1016:
1011:
1006:
1001:
996:
991:
986:
981:
976:
971:
966:
961:
956:
951:
946:
941:
936:
931:
926:
921:
916:
911:
906:
901:
896:
891:
886:
881:
876:
871:
866:
861:
856:
851:
846:
841:
836:
831:
826:
821:
816:
811:
806:
801:
796:
791:
786:
781:
776:
771:
766:
761:
756:
751:
746:
741:
736:
731:
726:
721:
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711:
706:
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691:
686:
681:
676:
671:
666:
661:
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651:
646:
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634:
633:
631:
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:
460:
455:
450:
445:
440:
435:
430:
425:
420:
415:
410:
405:
400:
395:
390:
384:
382:
378:
377:
371:
369:
368:
361:
354:
346:
339:
338:
332:
318:
317:
316:
310:
309:
275:
274:
273:
272:
267:
264:
261:
260:
254:
251:Maximum speed:
240:
239:
229:
223:
217:
211:
205:
199:
193:
187:
172:, pp. 110
163:
162:Specifications
160:
117:
114:
103:parasol winged
93:
92:
89:
85:
84:
83:February 1930
81:
77:
76:
73:
69:
68:
62:
58:
57:
52:
46:
45:
42:
36:
32:
31:
30:Latécoère 340
24:
14:
13:
10:
9:
6:
4:
3:
2:
1173:
1162:
1159:
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1116:
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1027:
1025:
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1020:
1017:
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1012:
1010:
1007:
1005:
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1000:
997:
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992:
990:
987:
985:
982:
980:
977:
975:
972:
970:
967:
965:
962:
960:
957:
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950:
947:
945:
942:
940:
937:
935:
932:
930:
927:
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922:
920:
917:
915:
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910:
907:
905:
902:
900:
897:
895:
892:
890:
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880:
877:
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870:
867:
865:
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860:
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845:
842:
840:
837:
835:
832:
830:
827:
825:
822:
820:
817:
815:
812:
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807:
805:
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800:
797:
795:
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790:
787:
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747:
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742:
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732:
730:
727:
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519:
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386:
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333:2-84890-067-9
329:
325:
320:
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315:Cited sources
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270:
269:
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258:
255:
252:
249:
248:
247:
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237:
233:
230:
227:
226:Gross weight:
224:
221:
220:Empty weight:
218:
215:
212:
209:
206:
203:
200:
197:
194:
191:
188:
185:
182:
181:
180:
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157:
152:
148:
143:
139:
136:
130:
128:
124:
115:
113:
111:
107:
104:
100:
99:Latécoère 340
90:
87:
86:
82:
80:First flight
79:
78:
75:Marcel Moine
74:
71:
70:
66:
63:
61:Manufacturer
60:
59:
56:
53:
48:
47:
41:
37:
34:
33:
28:
19:
1136:Flying boats
542:
492:
323:
262:
256:
250:
243:
241:
231:
225:
219:
213:
207:
201:
195:
192:5 passengers
189:
183:
176:
174:
166:
165:
155:
144:
140:
131:
123:Latécoère 21
119:
98:
96:
18:Latécoère 34
244:Performance
232:Powerplant:
151:French Navy
106:flying boat
40:flying boat
1130:Categories
266:References
214:Wing area:
373:Latécoère
305:Cuny 1992
271:Citations
202:Wingspan:
190:Capacity:
170:Cuny 1992
167:Data from
72:Designer
65:Latécoère
1083:Missiles
637:Projects
381:Aircraft
375:aircraft
127:sponsons
208:Height:
196:Length:
330:
156:F-AKDI
110:France
55:France
184:Crew:
35:Role
498:35-0
493:34-0
328:ISBN
234:3 ×
97:The
1115:257
1110:240
1105:231
1100:120
1095:110
1090:100
1074:900
1069:880
1064:870
1059:860
1054:850
1049:840
1044:830
1039:820
1034:810
1029:800
1024:790
1019:780
1014:740
1009:730
1004:700
999:310
994:780
989:740
984:730
979:703
974:675
969:670
964:640
959:620
954:617
949:616
944:615
939:614
934:613
929:612
924:610
919:602
914:601
909:600
904:590
899:583
894:581
889:580
884:560
879:530
874:525
869:524
864:520
859:503
854:502
849:493
844:492
839:480
834:470
829:460
824:443
819:442
814:441
809:430
804:420
799:410
794:386
789:385
784:384
779:383
774:382
769:370
764:360
759:310
754:270
749:255
744:220
739:210
734:200
729:190
724:180
719:170
714:160
709:150
704:140
699:130
694:120
689:101
628:710
623:631
618:611
613:582
608:570
603:550
598:523
593:522
588:521
583:501
578:500
573:491
568:490
563:440
558:381
553:380
548:350
543:340
538:330
533:302
528:301
523:300
518:299
513:298
508:290
503:225
1132::
684:30
679:27
674:20
669:13
664:12
659:11
654:10
488:32
483:28
478:26
473:25
468:24
463:23
458:22
453:21
448:19
443:18
438:17
433:16
428:15
423:14
279:^
91:1
649:9
644:7
418:8
413:6
408:5
403:4
398:3
393:2
388:1
365:e
358:t
351:v
336:.
186:2
20:)
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