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Dunne D.5

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250: 28: 234:. During the second flight, Dunne took his hands off the controls for an extended period, while he wrote a note on a piece of paper provided for him by Brewer. This note was the first ever documentary evidence of an aircraft's performance written in flight by the pilot himself. The D.5 was subsequently certified as the first fixed-wing aircraft ever to achieve stable flight. 204:
Following construction at Leysdown, the D.5 was taken to Eastchurch, the new site of the (now Royal) Aero Club and the Syndicate located a short distance away on Sheppey. Early trials were not encouraging, with the machine in its original form proving too heavy. Dunne undertook extensive lightening
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35 hp water-cooled, four-cylinder inline type, significantly more powerful than those the Army had allowed. Twin radiators were fitted on either side, standing up and aligned with the airflow in order to minimise drag. The mid-mounted engine chain-drove twin pusher propellers, mounted on outriggers
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on the upper wing tips were the only movable surfaces. However on the D.5 they were operated independently by two levers on either side of the cockpit. There was no rudder, with turning being coordinated by the aerodynamic design of the swept and washed-out wings. Unlike most aircraft, they were
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The D.5 first flew in the summer of 1910, thus becoming his first powered aeroplane to fly. Dunne had long ago literally dreamed of this flight. The D.5 was later certified as the first fixed-wing aircraft ever to achieve natural stability in flight, with one of the official witnesses being
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arranged such that raising an elevon both reduced lift and increased drag, while lowering it had the opposite effects. Thus, the wing being lowered would be dragged back (a phenomenon known as proverse yaw), automatically coordinating a banking turn.
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set up the Blair Atholl Aeroplane Syndicate Ltd., to continue developing his unusual tailless swept-wing aircraft, none of which had yet flown under power. The D.5 was his first design for them and it followed the general layout of the earlier
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Army machine in having a tailless, swept biplane wing with pronounced wash-out and endplates, and driven by twin pusher propellers. However it differed in having a streamlined central nacelle or fuselage housing the pilot and engine.
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The D.5 first flew in the summer of 1910. Dunne taxied it to the top of a rise in the ground which lay downwind, turned the machine and took off downhill into the wind. He later recalled in his book
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The D.5 crashed whilst being flown by another pilot the following December, and parts of it were re-used to build the first
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Endplate fins were fitted to the wings to improve efficiency, with square cutouts to avoid fouling the elevons.
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for his company, the Blair Atholl Aeroplane Syndicate Ltd. Like its military predecessors it was driven by twin
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behind the wing. As before, the propellers rotated in opposite directions to cancel out their torque.
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The D.5 proved to be aerodynamically stable in flight. Two demonstration flights were made for the
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was a British experimental aircraft built in 1910. A tailless swept-wing
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that, as a child, he had experienced exactly this flight in a dream.
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The control surfaces were, like the wing, similar to the D.4.
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in December 1910, officially witnessed by the visiting
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Construction of the main airframe was contracted to
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(27 May 1943). 409: 365: 340: 1: 329: 2101:Aircraft first flown in 1910 7: 402:Constance Babington Smith; 298:1,550 lb (703 kg) 10: 2117: 349:Shorts Aircraft since 1900 187:Aero Club of Great Britain 2040:Dunne-Huntington triplane 1990: 1931:English Electric Canberra 1918: 1811: 1775: 1707: 1691: 1675: 1659: 1608: 1567: 1535: 1528: 1262: 1092: 829: 749: 718: 585: 514: 205:to Short's construction. 25: 20: 469:Pioneer Aircraft 1903-14 467:Munson, Kenneth (1969). 157:at Farnborough in 1909, 259:General characteristics 216:An Experiment with Time 2045:Dunne-Capper monoplane 381:: 459–61. 18 June 1910 254: 149:Design and development 1708:Maritime patrol & 373:"The Dunne Aeroplane" 252: 117:, it was designed by 38:Experimental aircraft 1856:Short-Mayo Composite 537:Short-Wright biplane 155:Army Balloon Factory 209:Operational history 255: 2081:Tailless aircraft 2058: 2057: 1949: 1948: 1926:Bristol Britannia 1914: 1913: 1616:M4 scale Stirling 825: 824: 418:"Tailless Trials" 196:The engine was 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Retrieved 421: 411: 404:Testing Time 403: 383:. Retrieved 376: 367: 348: 342: 326: 320: 313: 311: 301: 295: 289: 283: 277: 271: 265: 258: 256: 236: 221: 214: 212: 203: 195: 180: 177: 169: 152: 139: 110: 108: 75:Number built 15: 1861:Sandringham 1631:SB.4 Sherpa 1510:Triple-Twin 1500:Tandem-Twin 1370:Sandringham 1254:SD.3-60/360 1249:SD.3-30/330 557:Tandem-Twin 552:Triple-Twin 430:27 February 385:27 February 314:Performance 302:Powerplant: 159:J. W. Dunne 119:J. W. Dunne 60:J. W. Dunne 2065:Categories 1812:Transports 1762:Sunderland 1495:Sunderland 1415:'Shamrock' 330:References 290:Wing area: 1776:Trainers: 1747:Springbok 1727:Singapore 1722:'G-Class' 1660:Fighters: 1536:Airships: 1475:Springbok 1450:Singapore 1380:Satellite 1320:'G-Class' 1280:'C-Class' 1064:S.45 (II) 830:Post-1921 588:sequence: 586:Early 'S' 542:Dunne D.5 278:Wingspan: 268:One pilot 253:Dunne D.5 198:Green C.4 111:Dunne D.5 102:Dunne D.8 90:Dunne D.4 56:Designer 2086:Biplanes 1985:aircraft 1886:Shetland 1798:Sturgeon 1742:Shetland 1737:Sarafand 1699:Crusader 1676:Gliders: 1600:Sturgeon 1595:Stirling 1568:Bombers: 1480:Stirling 1440:'Shrimp' 1430:Shetland 1375:Sarafand 1315:'Folder' 1305:Crusader 1300:Cromarty 1285:Calcutta 1097:sequence 1059:S.45 (I) 832:sequence 515:Pre-1921 509:aircraft 426:: 556–58 127:Leysdown 1906:Valetta 1881:Sealand 1841:G-Class 1831:Belfast 1767:Seaford 1732:Rangoon 1692:Racers: 1667:Gurnard 1590:Sperrin 1529:By type 1520:Valetta 1465:Sperrin 1405:Sealand 1400:Seaford 1365:Rangoon 1345:Mercury 1330:Gurnard 1290:Chamois 1270:Belfast 1094:S.B.A.C 284:Height: 272:Length: 230:and by 172:Elevons 115:biplane 1901:Skyvan 1896:Sherpa 1891:Solent 1876:Scylla 1803:Tucano 1683:Nimbus 1580:Seamew 1575:Bomber 1515:Tucano 1460:Solent 1455:Skyvan 1410:Seamew 1395:Scylla 1360:Nimbus 1355:Mussel 1310:Empire 1295:Cockle 1275:Bomber 567:Bomber 456:  423:Flight 378:Flight 355:  135:engine 1983:Dunne 1866:Scion 1846:Hythe 1585:Shirl 1435:Shirl 1385:Scion 1263:Names 1084:S.312 879:S.8/8 335:Notes 306:Green 266:Crew: 69:1910 35:Role 1851:Kent 1793:S.38 1783:S.27 1646:SC.9 1641:SC.1 1636:SB.5 1626:SB.1 1350:Maia 1335:Kent 1244:SD.2 1239:SD.1 1234:SC.9 1229:SC.8 1224:SC.7 1219:SC.6 1214:SC.5 1209:SC.4 1204:SC.3 1199:SC.2 1194:SC.1 1189:SB.9 1184:SB.8 1179:SB.7 1174:SB.6 1169:SB.5 1164:SB.4 1159:SB.3 1154:SB.2 1149:SB.1 1144:SA.9 1139:SA.8 1134:SA.7 1129:SA.6 1124:SA.5 1119:SA.4 1114:SA.3 1109:SA.2 1104:SA.1 1079:S.48 1074:S.47 1069:S.46 1054:S.44 1049:S.43 1044:S.42 1039:S.41 1034:S.40 1029:S.39 1024:S.38 1019:S.37 1014:S.36 1009:S.35 1004:S.34 999:S.33 994:S.32 989:S.31 984:S.30 979:S.29 974:S.28 969:S.27 964:S.26 959:S.25 954:S.24 949:S.23 944:S.22 939:S.21 934:S.20 929:S.19 924:S.18 919:L.17 914:S.17 909:S.16 904:S.15 899:S.14 894:S.12 889:S.11 884:S.10 736:N.2B 731:N.2A 726:N.1B 710:S.81 705:S.80 700:S.62 695:S.53 690:S.52 685:S.51 680:S.50 675:S.49 670:S.48 665:S.45 660:S.44 655:S.43 650:S.41 645:S.39 640:S.38 635:S.36 630:S.35 625:S.34 620:S.33 615:S.32 610:S.29 605:S.28 600:S.27 595:S.26 454:ISBN 432:2008 387:2008 353:ISBN 304:1 × 109:The 21:D.5 2035:D.9 2030:D.8 2025:D.7 2020:D.6 2015:D.5 2010:D.4 2005:D.3 2000:D.2 1995:D.1 1826:360 1821:330 1558:R38 1551:R32 1544:R31 874:S.8 869:S.7 864:S.6 859:S.5 854:S.4 849:S.3 844:S.2 839:S.1 817:830 812:827 807:320 802:310 797:301 792:184 787:166 782:136 777:135 741:N.3 239:D.8 164:D.4 125:at 2067:: 772:81 767:74 762:42 420:. 395:^ 375:. 241:. 193:. 145:. 137:. 79:1 1975:e 1968:t 1961:v 757:3 499:e 492:t 485:v 462:. 434:. 389:. 361:.

Index


Short Brothers
J. W. Dunne
Dunne D.4
Dunne D.8
biplane
J. W. Dunne
Short Brothers
Leysdown
pusher propellers
engine
Orville Wright
Army Balloon Factory
J. W. Dunne
D.4
Elevons
Short Brothers
Aero Club of Great Britain
Isle of Sheppey
Green C.4
An Experiment with Time
Royal Aero Club
Orville Wright
Griffith Brewer
D.8

Green
ISBN
0-85177-819-4
"The Dunne Aeroplane"

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