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Tandem wing

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324:(flying flea) had a novel two-axis control system to make it easy to fly. No ailerons were needed because when the rudder was operated, yaw-roll coupling ensured that the plane banked into a turn. For pitch control the whole front wing tilted to act as a canard elevator. Introduced at much the same time as the Taupin, it became a craze, hundreds were built and variations developed in many countries. However stability issues relating to the variable front wing could lead to lethal crashes in the hands of the novice pilot, and the type eventually fell out of favour. 430: 1350: 28: 1422:. Odonata species typically have long, thin wings and can synchronise the flapping of fore and aft pairs in various different modes, allowing them to be both fast and highly manoeuvrable. By comparison the Lepidoptera have wider wings which are flapped in synchrony and may even overlap in flight, and are better suited to endurance flying. Thrips are smaller insects and the flying species have relatively stiff wings. Due to their small size, they generate lift via 187: 295: 1361: 333: 226: 401:, a subscale test aircraft for the proposed M.39 high-speed bomber to meet Specification B.11/41. This time the fore wing was smaller and mounted low, while the swept rear wing was high-mounted with twin engine nacelles slung beneath. Flying in 1943 it performed well, but the bomber requirement was subsequently cancelled. 108:
The tandem layout creates a "slot effect" in which the front wing deflects air downwards over the rear wing, reducing the angle of attack (AoA) of the rear. At high aircraft AoA, this causes the front wing to stall first, allowing safer flight at low speeds than the equivalent conventional layout. It
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The basic tandem configuration uses wings which are equal in size and in line with each other. Examples have flown successfully, such as the Peyret glider of 1922. However the rear wing is usually placed either above or below the fore wing, in order to avoid its turbulent wake. One wing is often made
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light observation and liaison aircraft, by adding a rear gun turret to give it some protection from attack. The Lysander already had a suitable main wing, so to support the weight of the turret Westland thought of adding a Delanne-type rear wing. By now hostilities had started but France had not yet
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novel control system comprised full-span trailing edge surfaces on all four wings. These operated in pairs on each side as ailerons, in pairs fore and aft as elevators, and synchronously as flaps for low-speed flight. The system proved effective and, despite the glider being less efficient than the
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showed that the tandem layout was inherently less aerodynamically efficient that the more conventional. Overlapping with Eiffel's work, Stefan Driezewicki developed and wind-tunnel tested an inherently stable tandem-wing design. He then built and successfully flew a full-sized example at the end of
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planes, with one located forward and the other to the rear. The difference is greater than the wing chord, so there is a clear gap between them and the aircraft centre of gravity (CG) lies between the wings. Compared to the conventional layout, where the tailplane exerts little or no vertical force
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Other tandem approaches such as the Delanne were largely forgotten, until David Lockspeiser conceived of his Land Development Aircraft, a low-cost utility transport. It was to utilise three interchangeable wing component; one each mounted high up for the left and right rear wings, and a third fore
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In a conventional design, the fuselage is supported only in one place, with the fore and aft fuselage sections cantilevered out from it. This creates significant bending stresses. A tandem wing supports the same fuselage in two places, reducing the bending stresses. However the torsion stresses on
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to secretly modify the aerodrome until it could fly, as "proof" that it had flown in 1903. Curtiss added floats and made other improvements, enabling it to undertake short hops as a true waterplane in 1914. The ruse was eventually exposed, yet the Smithsonian still sought to claim that the 1902
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was working on a low-powered but highly efficient plane for home construction. The tandem layout offered a low-drag fixed undercarriage installation, by placing the main wheels in housings at the tips of the fore wing and applying anhedral to raise the fuselage high enough for a propeller. The
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flew to Paris, where Penrose flew one of the 20-Ts and reported favourably on its handling. The tandem Lysander was not completed until 1941, when Penrose began test flights. Although it performed flawlessly – he wrote that "here was a military prototype that needed no alteration" – it was not
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conventional high-aspect-ratio entries, it proved more controllable and manoeuvrable. This enabled the pilot M. Maneyrol to remain in updraughts for longer than the others. Although Peyret continued to develop the design, in both gliders and powered types, they remained a curiosity.
1469:, possibly only a single species. It is known only from the fossil record, principally in China. Both fore and hind limbs were covered in flight feathers and it is thought to have been capable of true flapping flight as well as gliding. Its flight mode is not known. 136:(CG) location than other layouts, which can offer a practical solution where weight loadings and distributions may vary during operations. However a wide CG range leads to other problems, including a compatible undercarriage layout and safe stalling characteristics. 144:
The joined wing is a tandem-wing layout in which the front wing sweeps back and/or the rear wing sweeps forwards such that they join at or near the tips to form a continuous surface in a hollow diamond or triangle shape. The joined wing is also an example of a
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was working on tandem-wing designs. He proposed a fighter, the Delanne 10, featuring a gulled forward wing and twin fins on the tips of the low-set and slightly shorter-span rear wing. He first built two examples of a smaller aerodynamic test aircraft, the
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In a conventional layout, the moment arm of the outer section's lifting load is large, and this stresses the root section. However, in a tandem design each wing is smaller and the outer load is absent. This allows the wing structure to be lighter overall.
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In a tandem wing the lift forces on the two wings are separated longitudinally, allowing them to act together to achieve stability, control and trim. The mechanisms of stability and control for a tandem wing are similar to those for the tail-first or
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test aircraft differed from the Delanne design in having wings of approximately equal span, but with the rear wing given a longer chord and swept back. Although the design was rejected, it flew well enough to prompt development of the larger
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Because it is more compact, the tandem-wing structure is stiffer overall, meaning that less allowance needs to be made for bending, and a smaller safety margin in stress levels is possible, allowing yet further weight and cost reduction.
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of 1963 marked the entry of the tandem wing configuration into the VTOL arena, as a quadrotor convertiplane, with large tilting proprotors mounted on each wing tip. It proved overly complex and unreliable for the technology of the day.
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high-mounted rear wing had compensating dihedral. The Quickie first flew in 1977 and the next year won the EAA's Outstanding New Design Award at Oshkosh. It became popular, and several variants subsequently appeared.
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After WWII, interest returned to the Flying Flea's tilting forewing concept and, with its worst dangers now understood and fixed, designers have continued to develop the idea, typically still for home construction.
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configurations. The high-mounted fore wing and low-mounted aft wing arrangement is also sometimes treated as an extreme staggered biplane and referred to as the NĂ©nandovich biplane.
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experimented with a tandem-wing model. Four sets of wings in tandem variously provided lift and propulsion, and Burraitni's cat became the first aeronaut to fly in a tandem design.
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with tandem elliptical closed wings, later modifying it as his type IV with the fore wing converted into a conventional biplane. But it was not until the next year that his
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However, the larger trim forces available compared to a smaller tailplane or foreplane mean that a tandem design can offer a greater range of trim conditions, and hence of
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a little smaller than the other, according to the details of the design. Indeed, there are no clear dividing lines between the conventional vs. tandem, or the tandem vs.
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Interference effects between the two wings can make a tandem layout less efficient in cruise than the equivalent conventional design, however examples such as the
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prototype flying boat comprised a long passenger-carrying hull to which were attached in tandem three stacks of triplane wings from the successful
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and are capable of gliding flight, though not of true flapping flight. Some species, such as the band-wing, also have sufficiently enlarged
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line of heavy bombers and airliners, earning it the nickname "Capronissimo". However it broke up on its first attempted takeoff in 1921.
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Analysis of the Structure and Mechanism of Wing Folding and Flexion in Xylotupes Gideon Beetle (L. 1767) (Coloptera, Scarabaeditae)
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or "tail-first" configuration where the forward surface is much smaller and does not contribute significantly to the overall lift.
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Tandem wings in nature occur only in insects and flying fish, although in the past there have been tandem-wing flying reptiles.
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flew in 1971. It proved successful enough to develop for production, but the project ended before it could be modified.
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In aviation, tandem wings have long been experimented with, but few designs have ever been put into production.
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The next breakthrough to manufacture came once again in the homebuilt market. Up-and-coming maverick designer
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Poulsen, C. M. (1943). "The Tandem Monoplane: Does it Still Have a Future? Some Past Experiences Recalled",
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The tandem wing configuration predates successful manned flight. As far back as the fifteenth century,
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was taking a very different approach to flight control. Intended for amateurs to build at home, his
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Having also flown simpler fore-and-aft tandem models of up to 14 feet (4.3 m) in span, in 1903
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version had been "capable of flight". It would be many more years before they recanted.
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and realised its potential as a short-span, short-take-off Naval fighter. The ensuing
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flew a tandem monoplane glider, confirming that the aerodynamic principle was sound.
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first flew in 1933. Its design proved practical and some 52 examples were produced.
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Aerodynamic characteristics of a tandem wing configuration of a Mach number of 0.30
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Several orders of flying insects employ tandem wings, each with its characteristic
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flapping rather than the usual leading-edge vortex generation of most insects.
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continued the work of Peyret after he died, adopting his control system. Their
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layout; the distinction is mainly in the relative size of the forward surface.
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Experimental tandem-wing aircraft continued to be built after World War I.
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in cruising flight, both tandem wings contribute substantially to lift.
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Brewer, Griffith (October 1921). "Aviation's Greatest Controversy".
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performed well but the requirement for its successor was cancelled.
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The first fully controllable tandem-wing type was the French-built
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Penrose, Harald; "Adventure with Fate", Airlife, 1984. pp.186-7.
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in which the wings are stacked one above another, or from the
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Penrose, Harald; "Adventure with Fate", Airlife, 1984. p.199.
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and some of the company's later designs were also tandems.
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Several pioneers had long made successful gliders. In 1905
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sought to prove that he had flown in the weeks before the
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in which a flying craft or animal has two or more sets of
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Modified Lysander to include rear wing and gun turret.
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wing mounted centrally beneath the nose. His prototype
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Wolkovitch, Julian; "The Joined Wing: An Overview",
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This list is incomplete. Please help by expanding it
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set one behind another. All the wings contribute to
255:Between 1907 and 1911, the aerodynamics studies of 169:the centre section between the wings are greater. 1675:Bottomley, J. W. (1977). "Tandem-Wing Aircraft", 240:Powered flight followed two years later. In 1906 1718: 1562:Henderson, William P. and Huffman, Jarrett K.; 455: 119: 205:built a full-size tandem-wing monoplane, the 1706:, 12 August 1943, pp. 167–8. (Archive: 747:Also known as the Grushin Sh-Tandem. MAI-3. 1513: 1511: 1509: 1507: 1505: 1503: 1501: 1499: 939:scale prototype for tandem wing jet bomber 357:then constructed a prototype fighter, the 1549: 1547: 1545: 1344: 1025:Won the 1922 British Glider Competition. 1535:Green, William and Swanborough, Gordon; 1496: 1359: 1348: 428: 331: 293: 224: 185: 26: 1679:, vol. 4, October 1977. pp. 12–20. 1635: 1394:with tandem flapping wings include the 575:Failed to fly as either the III or IV. 368:were considering a modification of the 105:are capable of exceptional efficiency. 14: 1719: 1608: 1542: 327: 911:proof of concept for carrier fighter 217:, and employed successful planemaker 56:The tandem wing is distinct from the 1520: 159: 112:Tandem wings have also been used on 73: 725:Moscow Aviation Institute Sh-Tandem 109:also offers good STOL performance. 24: 1284:4-seat development of the Taupin. 803:Joined wing. (Cited in main text) 630:Nine-wing triple-tandem triplane. 263: 190:Langley Aerodrome, modified (1914) 25: 1748: 1641:Gordon, Yefim and Gunston, Bill; 1429:Many flying beetles, such as the 156:is a rare example to have flown. 1579:, Published Online 22 May 2012. 1691:. 27 April 1944. Archived from 1669: 1648: 1626: 997:Delta rear wing. Begun prewar. 519:Tiltwing personal air vehicle. 1617: 1602: 1589: 1569: 1556: 1529: 1436: 1316:Westland P.12 Lysander Delanne 139: 13: 1: 1537:The Complete Book of Fighters 1484: 1465:was a genus of tandem-winged 1660:Acta Mechanica et Automatica 1489: 1455: 456:List of tandem-wing aircraft 7: 1472: 1418:) and some Thysanoptera or 388:saw the tandem Lysander at 229:BlĂ©riot VI Libellule (1907) 181: 120:Stability, control and trim 10: 1753: 1379: 404: 353:, which flew in 1938. The 176: 1682:Miles, George H. (1944). 1654:Geisler, Tomasz (2012); " 1645:, Midland, 2000. pp.62-3. 1539:, Salamander, 1994. p.31. 1365:The band-wing flying fish 1229:High-altitude endurance. 1207:Scaled Composites Proteus 434:Scaled Composites Proteus 382:ordered into production. 355:Arsenal de l'AĂ©ronautique 103:Scaled Composites Proteus 1356:is only about 1 mm long. 1354:Echinothrips americanus 1153:Salmon Tandem Monoplane 684:Four-engined tiltrotor 375:W. E. W. "Teddy" Petter 373:fallen. Chief Designer 344:During the late 1930s, 211:Smithsonian Institution 203:Samuel Pierpont Langley 1685:"The Tandem Monoplane" 1376: 1357: 1345:Tandem wings in nature 1180:Scaled Composites ATTT 437: 341: 302: 230: 191: 114:ground-effect vehicles 34: 1566:, NASA, October 1975. 1479:Stagger (aeronautics) 1363: 1352: 917:Miles M.39B Libellula 432: 377:and Chief Test Pilot 338:Miles M.39B Libellula 335: 297: 228: 189: 30: 1737:Tandem-wing aircraft 1732:Aircraft wing design 1063:Piel CP-10 Pinocchio 945:Montgomery Aeroplane 889:Miles M.35 Libellula 836:Mauboussin HĂ©miptère 775:Failed to take off. 394:Miles M.35 Libellula 284:Peyret tandem glider 196:Tito Livio Burraitni 1727:Wing configurations 1662:, Vol.6 No.3, 2012. 1577:Journal of Aircraft 1117:Derivatives of the 715:Test plane for the 662:Curtiss-Wright X-19 415:Curtiss-Wright X-19 328:World War II period 1597:The Ligeti Stratos 1388:and flight modes. 1377: 1358: 1087:Mignet Pou du Ciel 1053:Forerunner of the 863:Mignet Pou-du-Ciel 809:Lockspeiser LDA-01 717:Arsenal-Delanne 10 525:Arsenal-Delanne 10 438: 359:Arsenal-Delanne 10 342: 303: 300:Mignet Pou-du-Ciel 235:John J. Montgomery 231: 192: 43:wing configuration 35: 1611:U.S. Air Services 1585:10.2514/1.C036326 1342: 1341: 753:Langley Aerodrome 450:Scaled Composites 390:RAF Boscombe Down 366:Westland Aircraft 160:Structural design 134:centre of gravity 74:Design principles 16:(Redirected from 1744: 1699: 1697: 1663: 1652: 1646: 1639: 1633: 1630: 1624: 1621: 1615: 1614: 1606: 1600: 1595:Marcel, Arthur; 1593: 1587: 1573: 1567: 1560: 1554: 1551: 1540: 1533: 1527: 1524: 1518: 1517:Bottomley (1977) 1515: 1290:Viking Dragonfly 497:Airbus AÂł Vahana 467: 466: 21: 1752: 1751: 1747: 1746: 1745: 1743: 1742: 1741: 1717: 1716: 1695: 1683: 1672: 1667: 1666: 1653: 1649: 1643:Soviet X-Planes 1640: 1636: 1631: 1627: 1622: 1618: 1607: 1603: 1594: 1590: 1574: 1570: 1561: 1557: 1552: 1543: 1534: 1530: 1525: 1521: 1516: 1497: 1492: 1487: 1475: 1458: 1439: 1382: 1347: 1085:Similar to the 948:The Santa Clara 636:Croses Pouplume 458: 407: 346:Maurice Delanne 330: 266: 264:Interwar period 246:third aeroplane 215:Wright 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714: 711: 708: 705: 702: 699: 696: 694: 691: 690: 687: 686:convertiplane 683: 680: 677: 674: 671: 668: 665: 663: 660: 659: 655: 653: 650: 647: 645: 642: 639: 637: 634: 633: 629: 626: 623: 620: 617: 614: 611: 609: 608:Caproni Ca.60 606: 605: 602: 599: 596: 593: 590: 587: 584: 582: 579: 578: 574: 571: 568: 565: 562: 559: 556: 553: 550: 549: 546: 543: 540: 537: 534: 531: 528: 526: 523: 522: 518: 515: 512: 509: 506: 503: 500: 498: 495: 494: 490: 487: 484: 481: 478: 475: 472: 469: 468: 463: 460: 459: 453: 451: 448:Rutan set up 446: 443: 435: 431: 427: 425: 419: 416: 411: 402: 400: 395: 391: 387: 383: 380: 376: 371: 367: 362: 360: 356: 352: 347: 339: 334: 325: 323: 319: 314: 312: 308: 301: 296: 292: 289: 285: 280: 278: 274: 273:Caproni Ca.60 269: 261: 258: 253: 251: 247: 243: 242:Louis BlĂ©riot 238: 236: 227: 223: 220: 219:Glenn Curtiss 216: 212: 208: 204: 199: 197: 188: 174: 170: 166: 157: 155: 150: 148: 137: 135: 130: 128: 117: 115: 110: 106: 104: 99: 97: 91: 88: 85:has two main 84: 83:configuration 81: 71: 68: 65: 63: 59: 54: 52: 48: 44: 40: 33: 29: 19: 1703: 1693:the original 1688: 1676: 1670:Bibliography 1659: 1650: 1642: 1637: 1628: 1619: 1610: 1604: 1591: 1576: 1571: 1558: 1536: 1531: 1526:Miles (1944) 1522: 1460: 1459: 1440: 1428: 1390: 1383: 1217:Experimental 1190:Experimental 1041:Experimental 985:Experimental 958:Experimental 947: 927:Experimental 899:Experimental 846:Experimental 763:Experimental 703:Experimental 693:Delanne 20-T 672:Experimental 591:Experimental 563:Experimental 461: 447: 439: 420: 412: 408: 386:George Miles 384: 363: 351:Delanne 20-T 343: 318:Henri Mignet 315: 304: 281: 270: 267: 254: 239: 232: 200: 193: 171: 167: 163: 151: 143: 131: 123: 111: 107: 100: 92: 79: 77: 69: 66: 55: 38: 36: 1462:Microraptor 1450:pelvic fins 1442:Flying fish 1437:Flying fish 1412:butterflies 1408:Lepidoptera 1404:damselflies 1400:dragonflies 1373:pelvic fins 1235:SFCA Taupin 1055:SFCA Taupin 975:Payen PA-22 656:Ultralight 552:BlĂ©riot III 322:Pou-du-Ciel 147:closed wing 140:Joined wing 80:tandem wing 39:tandem wing 18:Tandem-wing 1721:Categories 1485:References 1251:Production 651:Home build 581:BlĂ©riot VI 442:Burt Rutan 364:Meanwhile 316:Meanwhile 244:built his 1677:Aerospace 1490:Citations 1467:dinosaurs 1456:Dinosaurs 1332:Prototype 1323:Propeller 1306:Homebuilt 1297:Propeller 1278:Prototype 1269:Propeller 1242:Propeller 1223:Prototype 1196:Prototype 1187:Propeller 1169:Prototype 1160:Propeller 1143:Homebuilt 1134:Propeller 1112:Homebuilt 1103:Propeller 1079:Prototype 1070:Propeller 1047:Prototype 1038:Propeller 1031:Peyret VI 1019:Prototype 991:Prototype 982:Propeller 964:Prototype 933:Prototype 924:Propeller 905:Prototype 896:Propeller 879:Homebuilt 870:Propeller 852:Prototype 843:Propeller 825:Prototype 816:Propeller 797:Prototype 788:Propeller 785:Australia 760:Propeller 741:Prototype 732:Prototype 719:fighter. 709:Prototype 700:Propeller 678:Prototype 669:Propeller 643:Propeller 624:Prototype 618:Transport 615:Propeller 597:Prototype 588:Propeller 560:Propeller 541:Prototype 532:Propeller 513:Prototype 504:Propeller 207:Aerodrome 1473:See also 1431:ladybird 1369:pectoral 370:Lysander 288:Peyret's 182:Pioneers 1613:: 9–17. 1396:Odonata 1392:Insects 1386:anatomy 1380:Insects 1326:Utility 1300:Private 1272:Private 1245:Private 1163:Private 1137:Private 1106:Private 1073:Private 1013:Private 873:Private 819:Utility 791:Private 769:Project 569:Project 535:Fighter 507:Private 491:Notes 473:Country 405:Postwar 250:type VI 177:History 58:biplane 1711:Page 2 1708:Page 1 1704:Flight 1689:Flight 1420:Thrips 1266:France 1239:France 1097:series 1067:France 1035:France 1010:Glider 1007:France 979:France 955:Glider 867:France 840:France 735:Attack 697:France 640:France 585:France 557:France 529:France 485:Status 436:(1998) 424:LDA-01 311:Taupin 260:1912. 127:canard 96:canard 62:canard 1696:(pdf) 1416:moths 612:Italy 476:Class 399:M.39B 47:wings 41:is a 1414:and 1402:and 1371:and 1329:1940 1303:1980 1275:1946 1248:1936 1220:1998 1193:1986 1166:1923 1140:1978 1109:1980 1076:1948 1044:1933 1016:1922 988:1942 961:1905 930:1943 902:1942 876:1933 849:1936 822:1971 794:1985 766:1902 738:1937 729:USSR 706:1938 675:1963 648:1960 621:1921 594:1907 566:1906 538:1940 510:2018 482:Date 479:Role 470:Type 413:The 336:The 307:SFCA 305:The 277:Ca.4 271:The 152:The 87:wing 51:lift 1658:", 1581:doi 1406:), 1214:Jet 554:/IV 488:No. 1723:: 1687:. 1544:^ 1498:^ 1320:UK 1294:US 1254:53 1211:US 1184:US 1157:UK 1131:US 1121:. 1100:US 1089:. 1057:. 952:US 921:UK 893:UK 813:UK 757:US 666:US 501:US 298:A 149:. 78:A 53:. 37:A 1713:) 1583:: 1410:( 1398:( 1375:. 1335:1 1281:1 1226:1 1199:1 1172:1 1082:1 1050:1 1022:1 994:1 967:1 936:1 908:1 855:1 828:1 800:2 772:1 744:1 712:2 681:2 627:1 600:1 572:1 544:1 516:2 20:)

Index

Tandem-wing

QAC Quickie Q2
wing configuration
wings
lift
biplane
canard
configuration
wing
canard
Scaled Composites Proteus
ground-effect vehicles
canard
centre of gravity
closed wing
Ligeti Stratos

Tito Livio Burraitni
Samuel Pierpont Langley
Aerodrome
Smithsonian Institution
Wright brothers
Glenn Curtiss

John J. Montgomery
Louis Blériot
third aeroplane
type VI
Gustave Eiffel

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