251:
339:. Convair engineers are known to have examined the DM-1 and interviewed Lippisch. This has led historians to assume his technical influence, however there is no direct evidence to support this assumption. On the contrary, Convair had independently discovered the thin delta wing, while the DM-1 had a thick wing and its aerodynamic behaviour is very different. They knew of Lippisch and at least one engineer met him, but his contribution was more in the nature of "moral support" than anything technical.
259:
29:
274:
As a consequence it underwent a programme of modifications. Like all
Lippisch deltas it had a thick wing with a blunt leading edge. A strip was fixed along the leading edge to simulate a sharp profile. This created the vortices seen on the model and greatly increased the lift. The origin of modern
159:
with the engine buried in a thick, blunt-nosed wing. The pilot was accommodated in the forward section of the tail fin, which was as thick as the wings and almost as large. A scale model of the P.12/13a was successfully flown at
Spitzerberg, near Vienna.
175:, who asked for vital war work so that they would not be drafted. By this time in 1944 Lippisch realised that the war was hopeless and was happy to oblige, arranging for them to build a full-scale aerodynamic test glider for the P.12/13a project.
266:
When tested at
Langley, the DM-1 was found to perform poorly. It generated significantly less lift at low speeds than small-scale models had suggested. The cause proved to be vortex lift generated by the models which, due to its much higher
365:. Larger, supersonic test plane with 8.5 metres (27 ft 11 in) span, 8.94 metres (29 ft 4 in) length and prone pilot. Powered by a Walther liquid-fuelled rocket. All-up weight 11,500 kilograms (25,400 lb).
209:
The DM-1 was a single-seat glider made from steel tubing, plywood and bakelite impregnated plywood. The cockpit canopy was integrated into the fin leading edge. Launching the DM-1 was to be by piggy-back or aero-tow.
540:
320:
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72:
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1421:
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674:
Crellin, E. and Lee, R,; "Lippisch DM 1 Reconsidered", Parts 1–4, Smithsonian
National Air and Space Museum, 2015. (Retrieved 26 September 2020). Parts;
203:
1223:
544:
347:
Besides the NASA modifications, the
Akafliege Darmstadt and München defined some powered designs for a development programme derived from the DM-1.
1441:
1436:
1431:
1426:
1218:
199:
1213:
1263:
693:
Richard P. Hallion; "Lippisch, Gluhareff, and Jones: The
Emergence of the Delta Planform and Origins of the Sweptwing in the United States",
1253:
291:
The large and even thicker vertical stabilizer was removed and replaced with one of much smaller size, along with a cockpit canopy from a
1502:
1258:
1248:
1189:
1026:
1243:
985:
747:
1106:
621:
1507:
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978:
377:. Engine flight testbed, initially fitted with a Walther C. Airframe weight (without engine) 2,500 kilograms (5,500 lb)
1522:
1021:
740:
183:
1036:
1151:
581:
213:
After occupation by U.S. troops in May 1945, work continued at the DM-1 on behalf of the U.S. military government, with
1126:
1071:
858:
848:
843:
1497:
1131:
1111:
1101:
1066:
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808:
357:(NACA). Glider as modified with leading-edge strip, small thin fin, conventional cockpit and sealed elevon hinges.
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1076:
1051:
1041:
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650:
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823:
308:
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visiting Prien to see the project. Completed in early
November 1945, the DM-1 was shipped in a wooden box to
292:
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1116:
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778:
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873:
312:
1313:
63:
128:
48:
8:
715:
508:
354:(Lippisch). Glider as originally built but never flown, with thick wings and large tail.
1198:
763:
710:
617:
371:. Developed version of the DM-3 with pressure cabin and more powerful Walther C engine.
179:
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83:
68:
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1344:
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214:
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152:
115:
1228:
732:
726:
721:"Declassified UFO recovery Nov 3, 1945 Germany Operation Paperclip - Lippisch"
720:
585:
1491:
1476:
1471:
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1375:
1298:
1293:
1288:
783:
498:
454:
558 km/h (347 mph, 301 kn) Max speed in terminal velocity dive
222:
1238:
970:
1334:
1308:
140:
194:, where it was redesignated the DM-1 (for Darmstadt-München 1). At Prien,
1339:
1268:
503:
276:
156:
698:
582:"Experiments with delta wing models of small aspect ratios (circa 1944)"
1303:
1385:
1380:
1283:
1167:
233:(National Advisory Committee for Aeronautics, forerunner of today's
295:
in a more conventional position. Together with improvements to the
280:
258:
226:
163:
Lippisch himself lost interest in the design and began work on the
1354:
332:
28:
1349:
296:
148:
321:
Paul E. Garber
Preservation, Restoration, and Storage Facility
283:) may thus be traced to the NACA study and the modified DM-1.
331:
It has been suggested that the DM-1 influenced design of the
167:
with a different wing, but he was approached by students of
234:
230:
229:
where the flow behaviour of the DM-1 was examined in the
131:
glider that was designed and built in
Germany from 1944.
307:
After completion of testing the DM-1 was retired to the
493:
Aircraft of comparable role, configuration, and era
697:, Vol.26, No.1, Spring/March 1979. pp. 1–10.
254:The DM-1 modified for wind tunnel testing by NACA.
326:
299:hinges, this significantly reduced overall drag.
1489:
762:
302:
262:Lippisch DM-1 in restoration at the Smithsonian
186:, so the part-built airframe was moved to the
178:Construction was begun at the workshop of the
33:The DM-1 at Munich Prien airport after the war
1183:
1000:
986:
748:
729:, NACA Langley, 1 August 1946 (YouTube video)
604:
602:
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598:
716:Lippisch DM 1 Reconsidered, Smithsonian NASM
1190:
1176:
993:
979:
755:
741:
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271:, the full-size aircraft did not produce.
182:, as the Darmstadt D-33. The workshop was
569:Luftwaffe: Secret Jets of the Third Reich
644:
642:
381:
257:
249:
16:German single-seat research glider, 1944
563:
561:
1490:
460:72 km/h (45 mph, 39 kn)
1197:
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974:
736:
639:
535:
533:
531:
198:and Hans Zacher from Darmstadt, with
151:propelled point defence fighter, the
558:
335:delta-wing jets, beginning with the
13:
1503:1940s German experimental aircraft
727:"Investigation of the DM-1 Glider"
648:
528:
427:19 m (200 sq ft) ca
421:3.25 m (10 ft 8 in)
409:6.32 m (20 ft 9 in)
240:
14:
1539:
704:
286:
279:theory (as seen most famously on
206:from Munich, continued the work.
1224:Djävlar Anamma (Hols der Teufel)
27:
668:
415:6 m (19 ft 8 in)
155:. It was a sharply-swept delta
630:
611:
574:
327:Controversy over its influence
245:
134:
1:
1345:Delta IV (DFS 39/Fieseler F3)
516:
309:National Air and Space Museum
1508:Tailless delta-wing aircraft
303:Preservation and restoration
7:
1523:Akaflieg Darmstadt aircraft
651:"Design of Supersonic DM-1"
618:"Research Memorandum L7F16"
470:
439:460 kg (1,014 lb)
342:
293:Lockheed P-80 Shooting Star
10:
1544:
711:Akaflieg Darmstadt website
1513:Akaflieg München aircraft
1394:
1368:
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907:
771:
584:. youtube. Archived from
433:375 kg (827 lb)
237:) full-size wind tunnel.
111:
103:
98:
90:
78:
62:
54:
43:
38:
26:
21:
636:Crellin and Lee, Part 4.
521:
184:bombed in September 1944
1498:1940s German sailplanes
620:, NACA, 5 August 1947.
571:, Mortons, 2015, p.119.
394:General characteristics
313:Smithsonian Institution
1369:Ground effect vehicles
1314:Jacobs Hols der Teufel
263:
255:
145:Dr. Alexander Lippisch
382:Specifications (DM-1)
261:
253:
464:Maximum glide ratio:
695:Aerospace Historian
509:Handley Page HP.115
476:Related development
319:for storage at the
39:General information
764:Akaflieg Darmstadt
624:3 May 2017 at the
264:
256:
196:Wolfgang Heinemann
180:Akaflieg Darmstadt
169:Akaflieg Darmstadt
84:Alexander Lippisch
69:Akaflieg Darmstadt
1518:Lippisch aircraft
1485:
1484:
1165:
1164:
968:
967:
591:on June 12, 2016.
219:Charles Lindbergh
204:Hermann Nenninger
192:Prien am Chiemsee
153:Lippisch P.12/13a
127:is a single-seat
121:
120:
1535:
1528:Unflown aircraft
1350:Delta V (DFS 40)
1328:Powered aircraft
1192:
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1002:Akaflieg München
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543:. Archived from
537:
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317:Washington, D.C.
188:Akaflieg München
173:Akaflieg München
73:Akaflieg München
31:
19:
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1447:P.11 (Delta VI)
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723:(YouTube video)
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649:Rogers, James.
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55:National origin
49:research glider
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487:Lippisch P.13b
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547:on 2014-07-14
546:
542:
541:"DM1 bis DM4"
536:
534:
532:
527:
514:
510:
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505:
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500:
499:Convair XP-92
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431:Empty weight:
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223:Langley Field
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200:Klaus Metzner
197:
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190:workshops at
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125:Lippisch DM-1
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1214:Falke (1921)
1016:
868:
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669:Bibliography
654:. Retrieved
632:
613:
586:the original
576:
568:
549:. Retrieved
545:the original
513:
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458:Stall speed:
457:
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141:World War II
138:
124:
122:
104:First flight
91:Number built
64:Manufacturer
1264:Storch VIII
779:Württemberg
567:Dan Sharp;
504:Payen Pa 49
445:Performance
389:DM1 bis DM4
277:vortex lift
246:Vortex lift
157:flying wing
147:proposed a
135:Development
47:Full-scale
1492:Categories
1254:Storch III
1239:Grüne Post
699:JSTOR copy
551:2014-07-01
517:References
425:Wing area:
1386:RFB X-114
1381:RFB X-113
1289:Professor
1279:Delta III
1259:Storch IV
1249:Storch II
772:Unpowered
413:Wingspan:
387:Data from
107:Not flown
1422:P.01-118
1417:P.01-117
1412:P.01-116
1407:P.01-115
1402:P.01-111
1395:Projects
1340:Delta IM
1335:Storch V
1309:Fafnir 2
1274:Delta II
1244:Storch I
1234:Prüfling
1201:aircraft
1199:Lippisch
1010:Aircraft
1004:aircraft
784:Musterle
766:aircraft
622:Archived
471:See also
343:Variants
281:Concorde
227:Virginia
129:research
79:Designer
1355:DFS 194
1269:Delta I
1229:Zögling
1207:Gliders
908:Powered
419:Height:
407:Length:
333:Convair
139:During
99:History
58:Germany
1360:Me 163
1304:Fafnir
656:15 Jan
337:XF-92A
297:elevon
149:ramjet
71:&
1467:P.13b
1462:P.13a
1284:Falke
522:Notes
401:Crew:
165:P.13b
1477:P.20
1472:P.15
1457:P.13
1452:P.12
1442:P.10
1437:P.09
1432:P.08
1427:P.04
1319:DM-1
1294:Wien
1157:Mü31
1152:Mü30
1147:Mü28
1142:Mü27
1137:Mü26
1132:Mü24
1127:Mü23
1122:Mü22
1117:Mü20
1112:Mü19
1107:Mü18
1102:Mü17
1097:Mü16
1092:Mü15
1087:Mü14
1082:Mü13
1077:Mü12
1072:Mü11
1067:Mü10
1017:DM-1
960:D-39
955:D-37
950:D-29
945:D-22
940:D-18
935:D-16
930:D-14
925:D-13
920:D-11
899:D-42
894:D-41
889:D-40
884:D-38
879:D-36
874:D-34
869:D-33
864:D-30
859:D-28
854:D-20
849:D-19
844:D-17
839:D-15
834:D-12
829:D-10
658:2023
375:DM-4
369:DM-3
363:DM-2
352:DM-1
235:NASA
231:NACA
217:and
202:and
171:and
123:The
44:Type
22:DM-1
1299:Obs
1062:Mü9
1057:Mü8
1052:Mü7
1047:Mü6
1042:Mü5
1037:Mü4
1032:Mü3
1027:Mü2
1022:Mü1
915:D-5
824:D-9
819:D-8
814:D-7
809:D-6
804:D-4
799:D-3
794:D-2
789:D-1
315:in
225:in
1494::
641:^
597:^
560:^
530:^
323:.
311:,
143:,
1191:e
1184:t
1177:v
994:e
987:t
980:v
756:e
749:t
742:v
690:.
688:4
686:,
684:3
682:,
680:2
678:,
676:1
660:.
554:.
466:7
403:1
94:1
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