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Tailplane

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800:, 2 November 1916, Page 962; "A "lifting tail" is one which normally carries a certain amount of load, and which is therefore often cambered in order to make it more efficient. For instance, the tail planes of the old Farman biplanes were "lifting tail planes," and were, as a matter of fact, rather heavily cambered. By a non-lifting tail plane is meant one which does not, in the normal flying attitude, carry any portion of the load, but is merely "floating." This type of plane is usually, although not invariably, made of symmetrical section – i.e., it is either a perfectly flat plane, built up of a framework of steel tubes, or it is constructed of spars and ribs after the fashion of the main planes, but symmetrical in section and convex on both sides. The object of the latter form of section is, of course, to provide a good "streamline" shape which will offer a minimum of resistance. During flight it constantly occurs that such a tail plane is momentarily loaded, the load being either upwards or downwards according to circumstances, and then, of course, the tail plane is no longer, strictly speaking, " non-lifting." ... a non-lifting tail plane is not invariably symmetrical in section. Some designers favour a section in which the upper surface is convex, while the lower surface is perfectly flat. The reasons usually advanced for the employment of such a section are that, as the tail planes may – and, indeed, frequently do – work in the down draught from the main planes, a tail plane set parallel to the path of the machine, or, in other words, parallel to the propeller shaft, is virtually subject to a load acting in a downward direction. Now, an unsymmetrical tail plane like that referred to above is still giving a certain amount of lift a to angle of incidence, whereas the symmetrical .section would, of course, give no lift when the incidence was zero. The plano-convex section therefore tends, owing to the slight lift at no angle of incidence, to counteract the effect of the down draught from the wings, and may therefore be said to be equivalent to a flat or streamline plane set at a slight angle to the propeller shaft. The tail plane of the B.E.2C, as is the case on the majority of modern machines, is of the non-lifting type." 135: 300: 327: 309: 587: 488: 36: 318: 343: 359:
A wing with a conventional aerofoil profile makes a negative contribution to longitudinal stability. This means that any disturbance (such as a gust) which raises the nose produces a nose-up pitching moment which tends to raise the nose further. With the same disturbance, the presence of a tailplane
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light biplane was designed for civilian use, with an airfoiled lifting tail throughout its production run into the early World War I years and British military service from 1914 to 1916 – when it was realised that moving the centre of gravity further forwards allowed the use of a non-lifting
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It is a misconception that tailed aeroplanes always carry tailplane downloads. They usually do, with flaps down and at forward c.g. positions, but with flaps up at the c.g. aft, tail loads at high lift are frequently positive (up), although the tail's maximum lifting capability is rarely
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Some aircraft and flight modes can require the tailplane to generate substantial downforce. This is particularly so when flying slowly and at a high angle of attack (AoA). On some types, the demand in this flight mode has been so extreme that it has caused the tailplane to stall. On the
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seen by the tail as the aircraft rotates around the centre of gravity. For example, when the aircraft is oscillating, but is momentarily aligned with the overall vehicle's motion, the tailplane still sees a relative wind that is opposing the oscillation.
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A tailplane usually has some means allowing the pilot to control the amount of lift produced by the tailplane. This in turn causes a nose-up or nose-down pitching moment on the aircraft, which is used to control the aircraft in pitch.
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Depending on the aircraft design and flight regime, its tailplane may create positive lift or negative lift (downforce). It is sometimes assumed that on a stable aircraft this will always be a net down force, but this is untrue.
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and the tailplane, which also provided positive lift. However this arrangement can be unstable and these designs often had severe handling issues. The requirements for stability were not understood until shortly before
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two-seat Canadian trainer biplane, itself possessing a flat-bottom airfoiled tailplane unit not unlike the earlier Bristol Scout. But with care a lifting tailplane can be made stable. An example is provided by the
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At transonic speeds, an aircraft can experience a shift rearwards in the center of pressure due to the buildup and movement of shockwaves. This causes a nose-down pitching moment called
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tailplane in which the lift is nominally neither positive nor negative but zero, which leads to more stable behaviour. Later examples of aircraft from World War I and onwards into the
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The longitudinal stability of an aircraft may change when it is flown "hands-off"; i.e. when the flight controls are subject to aerodynamic forces but not pilot input forces.
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produces a restoring nose-down pitching moment, which may counteract the natural instability of the wing and make the aircraft longitudinally stable (in much the same way a
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were deployed, necessitating a small "SMURF" surface fixed to the fuselage, such that it aligned with the stabilizer leading-edge root at the critical angle.
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are flown with artificial stability. The advantage of this is a significant reduction in drag caused by the tailplane, and improved maneuverability.
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The function of the tailplane is to provide stability and control. In particular, the tailplane helps adjust for changes in position of the
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In addition to giving a restoring force (which on its own would cause oscillatory motion) a tailplane gives damping. This is caused by the
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generated by the front of the tailplane render any elevator unusable. An all-moving tail was developed by the British for the
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were fitted to the tailplane upside-down in order to maintain smooth airflow and downforce "lift" at high AoA. The
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Using a computer to control the elevator allows aerodynamically unstable aircraft to be flown in the same manner.
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of the entire tailplane. This saved the program from a costly and time-consuming rebuild of the aircraft.
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rocket-powered interceptor, which had a lifting tail and was both stable and controllable in flight.
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Fixed stabilizer and movable elevator surfaces; movable stabilizer and movable elevator (e.g.
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Racer - all aircraft with a reputation for being difficult to fly, and the easier-to-fly
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caused by changes in speed and attitude, fuel consumption, or dropping cargo or payload.
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Location of tailplane - mounted high, mid or low on the fuselage, fin or tail booms.
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a stall could be triggered by turbulence when the airbrakes were deployed. On the
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The tailplane comprises the tail-mounted fixed horizontal stabilizer and movable
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Transonic and supersonic aircraft now have all-moving tailplanes to counteract
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The horizontal stabilizer is the fixed horizontal surface of the
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that had positive lift tailplanes include, chronologically, the
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it initially occurred during takeoff and landing approach, and
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trainer required a ventral keel to cure a similar effect when
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Burns, BRA (23 February 1985), "Canards: Design with Care",
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had included an elevator trim device that could alter the
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and maintain maneuverability when flying faster than the
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Unsourced material may be challenged and 859: 845: 837: 635:Learn how and when to remove this message 536:Learn how and when to remove this message 120:Learn how and when to remove this message 396:, the centre of gravity was between the 161:) behind the main lifting surfaces of a 747: 392:On some pioneer designs, such as the 7: 613:adding citations to reliable sources 514:adding citations to reliable sources 58:adding citations to reliable sources 405:– the era within which the British 25: 824:Oakey, Mick; "Out of the Blue", 585: 486: 452:McDonnell Douglas F-4 Phantom II 325: 316: 307: 298: 34: 294: 256:General Dynamics F-111 Aardvark 228:Number of tailplanes - from 0 ( 45:needs additional citations for 1769:In-flight entertainment system 1466:Horizontal situation indicator 716:Aircraft flight control system 468:McDonnell Douglas T-45 Goshawk 364:always points into the wind). 1: 815:, Macdonald and Jane's, 1970. 157:surface located on the tail ( 1749:Environmental control system 813:Warplanes of the Third Reich 346:Tailplane (in shadow) of an 796:Answers to correspondents, 283:: high-mounted on the fin ( 1831: 1426:Course deviation indicator 1117:Electro-hydraulic actuator 830:, No. 1, 2012, pp.109-113. 562: 269:: mid-mounted on the fin ( 224:, it is characterised by: 1657:Conventional landing gear 685:Bell Aircraft Corporation 1441:Flight management system 726:Stabilizer (aeronautics) 250:); or a single combined 1744:Emergency oxygen system 1506:Turn and slip indicator 1301:Leading-edge droop flap 1271:Drag-reducing aerospike 1246:Adaptive compliant wing 1241:Active Aeroelastic Wing 721:Flight control surfaces 1784:Passenger service unit 1585:Self-sealing fuel tank 1481:Multi-function display 827:The Aviation Historian 756:Introduction to Flight 356: 275:Sud Aviation Caravelle 142: 1810:Aircraft aerodynamics 1764:Ice protection system 1682:Tricycle landing gear 1672:Landing gear extender 889:Aft pressure bulkhead 551:Aircraft such as the 345: 151:horizontal stabilizer 137: 18:Horizontal stabiliser 1729:Auxiliary power unit 1137:Flight control modes 770:Flight International 702:. Normally called a 700:critical Mach number 609:improve this section 510:improve this section 437:Bachem Ba 349 Natter 54:improve this article 1708:Escape crew capsule 1615:War emergency power 1486:Pitot–static system 1331:Variable-sweep wing 1039:Vertical stabilizer 754:Anderson, John D., 424:Spirit of St. Louis 191:vertical stabilizer 163:fixed-wing aircraft 1416:Attitude indicator 1396:Airspeed indicator 1391:Aircraft periscope 772:, pp. 19–21, 665:or all-moving tail 456:leading-edge slats 448:Gloster Meteor T.7 357: 202:centre of pressure 149:, also known as a 143: 1815:Aircraft controls 1797: 1796: 1724:Aircraft lavatory 1461:Heading indicator 1406:Annunciator panel 1386:Air data computer 1296:Leading-edge cuff 645: 644: 637: 546: 545: 538: 420:Charles Lindbergh 335: 334: 331:Flying tailplane 304:Fuselage mounted 206:centre of gravity 130: 129: 122: 104: 16:(Redirected from 1822: 1779:Navigation light 1759:Hydraulic system 1734:Bleed air system 1662:Drogue parachute 1336:Vortex generator 954:Interplane strut 861: 854: 847: 838: 831: 822: 816: 809: 803: 794: 788: 777: 765: 759: 752: 640: 633: 629: 626: 620: 589: 581: 541: 534: 530: 527: 521: 490: 482: 478:Active stability 329: 320: 311: 302: 295: 125: 118: 114: 111: 105: 103: 62: 38: 30: 21: 1830: 1829: 1825: 1824: 1823: 1821: 1820: 1819: 1800: 1799: 1798: 1793: 1789:Ram air turbine 1754:Flight recorder 1712: 1691: 1624: 1605:Thrust reversal 1529: 1520: 1491:Radar altimeter 1456:Head-up display 1366: 1355: 1251:Anti-shock body 1233: 1221: 1082:Artificial feel 1064:Flight controls 1058: 924:Fabric covering 874: 870:components and 865: 835: 834: 823: 819: 810: 806: 795: 791: 767: 766: 762: 758:, 5th ed, p 517 753: 749: 744: 712: 689:angle of attack 641: 630: 624: 621: 606: 590: 579: 567: 561: 542: 531: 525: 522: 507: 491: 480: 428:Gee Bee Model R 386: 373: 340: 330: 321: 312: 303: 285:Gloster Javelin 271:Hawker Sea Hawk 214: 212:Tailplane types 126: 115: 109: 106: 63: 61: 51: 39: 28: 23: 22: 15: 12: 11: 5: 1828: 1826: 1818: 1817: 1812: 1802: 1801: 1795: 1794: 1792: 1791: 1786: 1781: 1776: 1774:Landing lights 1771: 1766: 1761: 1756: 1751: 1746: 1741: 1736: 1731: 1726: 1720: 1718: 1714: 1713: 1711: 1710: 1705: 1699: 1697: 1696:Escape systems 1693: 1692: 1690: 1689: 1684: 1679: 1674: 1669: 1664: 1659: 1654: 1649: 1644: 1638: 1636: 1634:arresting gear 1626: 1625: 1623: 1622: 1617: 1612: 1607: 1602: 1597: 1592: 1590:Splitter plate 1587: 1582: 1577: 1572: 1567: 1562: 1557: 1552: 1547: 1542: 1536: 1534: 1522: 1521: 1519: 1518: 1513: 1508: 1503: 1498: 1493: 1488: 1483: 1478: 1473: 1468: 1463: 1458: 1453: 1448: 1443: 1438: 1433: 1428: 1423: 1418: 1413: 1408: 1403: 1398: 1393: 1388: 1383: 1378: 1372: 1370: 1357: 1356: 1354: 1353: 1348: 1343: 1338: 1333: 1328: 1323: 1318: 1313: 1308: 1303: 1298: 1293: 1288: 1283: 1278: 1273: 1268: 1263: 1258: 1253: 1248: 1243: 1237: 1235: 1223: 1222: 1220: 1219: 1214: 1209: 1204: 1199: 1194: 1189: 1184: 1179: 1174: 1169: 1164: 1159: 1154: 1149: 1144: 1139: 1134: 1129: 1124: 1119: 1114: 1109: 1104: 1099: 1094: 1089: 1084: 1079: 1074: 1068: 1066: 1060: 1059: 1057: 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: 909:Cruciform tail 906: 904:Crack arrestor 901: 896: 891: 885: 883: 876: 875: 866: 864: 863: 856: 849: 841: 833: 832: 817: 804: 789: 760: 746: 745: 743: 740: 739: 738: 733: 728: 723: 718: 711: 708: 643: 642: 593: 591: 584: 578: 575: 563:Main article: 560: 557: 544: 543: 494: 492: 485: 479: 476: 412:interwar years 385: 382: 372: 369: 339: 336: 333: 332: 323: 314: 305: 293: 292: 278: 260: 259: 244: 241: 220:. Besides its 213: 210: 128: 127: 42: 40: 33: 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 1827: 1816: 1813: 1811: 1808: 1807: 1805: 1790: 1787: 1785: 1782: 1780: 1777: 1775: 1772: 1770: 1767: 1765: 1762: 1760: 1757: 1755: 1752: 1750: 1747: 1745: 1742: 1740: 1737: 1735: 1732: 1730: 1727: 1725: 1722: 1721: 1719: 1717:Other systems 1715: 1709: 1706: 1704: 1703:Ejection seat 1701: 1700: 1698: 1694: 1688: 1685: 1683: 1680: 1678: 1675: 1673: 1670: 1668: 1665: 1663: 1660: 1658: 1655: 1653: 1650: 1648: 1647:Arrestor hook 1645: 1643: 1642:Aircraft tire 1640: 1639: 1637: 1635: 1631: 1627: 1621: 1618: 1616: 1613: 1611: 1608: 1606: 1603: 1601: 1598: 1596: 1593: 1591: 1588: 1586: 1583: 1581: 1578: 1576: 1573: 1571: 1568: 1566: 1563: 1561: 1558: 1556: 1553: 1551: 1548: 1546: 1543: 1541: 1538: 1537: 1535: 1533: 1527: 1523: 1517: 1514: 1512: 1509: 1507: 1504: 1502: 1499: 1497: 1494: 1492: 1489: 1487: 1484: 1482: 1479: 1477: 1474: 1472: 1469: 1467: 1464: 1462: 1459: 1457: 1454: 1452: 1449: 1447: 1446:Glass cockpit 1444: 1442: 1439: 1437: 1434: 1432: 1429: 1427: 1424: 1422: 1419: 1417: 1414: 1412: 1409: 1407: 1404: 1402: 1399: 1397: 1394: 1392: 1389: 1387: 1384: 1382: 1381:Air data boom 1379: 1377: 1374: 1373: 1371: 1368: 1362: 1358: 1352: 1349: 1347: 1344: 1342: 1339: 1337: 1334: 1332: 1329: 1327: 1324: 1322: 1319: 1317: 1314: 1312: 1309: 1307: 1304: 1302: 1299: 1297: 1294: 1292: 1289: 1287: 1284: 1282: 1279: 1277: 1274: 1272: 1269: 1267: 1264: 1262: 1259: 1257: 1254: 1252: 1249: 1247: 1244: 1242: 1239: 1238: 1236: 1232: 1228: 1224: 1218: 1215: 1213: 1210: 1208: 1205: 1203: 1200: 1198: 1195: 1193: 1190: 1188: 1185: 1183: 1180: 1178: 1175: 1173: 1170: 1168: 1165: 1163: 1162:Rudder pedals 1160: 1158: 1155: 1153: 1150: 1148: 1145: 1143: 1140: 1138: 1135: 1133: 1130: 1128: 1125: 1123: 1120: 1118: 1115: 1113: 1110: 1108: 1105: 1103: 1100: 1098: 1095: 1093: 1090: 1088: 1085: 1083: 1080: 1078: 1075: 1073: 1070: 1069: 1067: 1065: 1061: 1055: 1052: 1050: 1047: 1045: 1042: 1040: 1037: 1035: 1032: 1030: 1027: 1025: 1022: 1020: 1019:Trailing edge 1017: 1015: 1012: 1010: 1007: 1005: 1002: 1000: 999:Stressed skin 997: 995: 992: 990: 987: 985: 982: 980: 977: 975: 972: 970: 967: 965: 962: 960: 957: 955: 952: 950: 947: 945: 942: 940: 937: 935: 932: 930: 927: 925: 922: 920: 917: 915: 912: 910: 907: 905: 902: 900: 897: 895: 892: 890: 887: 886: 884: 881: 877: 873: 869: 862: 857: 855: 850: 848: 843: 842: 839: 829: 828: 821: 818: 814: 808: 805: 802: 799: 793: 790: 787: 784: 781: 776: 771: 764: 761: 757: 751: 748: 741: 737: 734: 732: 729: 727: 724: 722: 719: 717: 714: 713: 709: 707: 705: 701: 697: 692: 690: 686: 682: 678: 674: 670: 666: 664: 659: 657: 653: 649: 639: 636: 628: 618: 614: 610: 604: 603: 599: 594:This section 592: 588: 583: 582: 576: 574: 572: 566: 558: 556: 554: 549: 540: 537: 529: 519: 515: 511: 505: 504: 500: 495:This section 493: 489: 484: 483: 477: 475: 473: 469: 465: 461: 457: 453: 449: 443: 441: 438: 433: 429: 425: 421: 417: 416:Sopwith Camel 413: 408: 407:Bristol Scout 404: 399: 398:neutral point 395: 390: 383: 381: 378: 377:relative wind 370: 368: 365: 363: 355: 352: 349: 344: 337: 328: 324: 319: 315: 310: 306: 301: 297: 296: 290: 286: 282: 279: 276: 272: 268: 265: 264: 263: 257: 253: 249: 245: 242: 239: 235: 231: 227: 226: 225: 223: 219: 211: 209: 207: 203: 198: 196: 192: 189:aircraft the 188: 184: 180: 176: 172: 168: 164: 160: 156: 153:, is a small 152: 148: 141: 136: 132: 124: 121: 113: 110:December 2007 102: 99: 95: 92: 88: 85: 81: 78: 74: 71: –  70: 66: 65:Find sources: 59: 55: 49: 48: 43:This article 41: 37: 32: 31: 19: 1739:Deicing boot 1667:Landing gear 1610:Townend ring 1600:Thrust lever 1575:NACA cowling 1540:Autothrottle 1532:fuel systems 1530:devices and 1321:Stall strips 1291:Krueger flap 1261:Channel wing 1207:Wing warping 1197:Stick shaker 1192:Stick pusher 1112:Dual control 1097:Centre stick 1013: 964:Leading edge 934:Flying wires 894:Cabane strut 825: 820: 812: 807: 797: 792: 773: 769: 763: 755: 750: 693: 661: 660: 651: 650: 646: 631: 622: 607:Please help 595: 568: 550: 547: 532: 523: 508:Please help 496: 466:, while the 444: 391: 387: 374: 366: 362:weather vane 358: 261: 238:Roe triplane 215: 199: 150: 146: 144: 131: 116: 107: 97: 90: 83: 76: 64: 52:Please help 47:verification 44: 1687:Tundra tire 1570:Intake ramp 1501:Transponder 1286:Gurney flap 1227:Aerodynamic 1142:Fly-by-wire 1024:Triple tail 811:Green, W.; 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Horizontal stabiliser

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empennage
lifting
empennage
fixed-wing aircraft
helicopters
gyroplanes
Canards
tailless
flying wing
V-tail
vertical stabilizer
rudder
centre of pressure
centre of gravity
elevator
planform
tailless

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