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Vactrain

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517:. The vehicles, instead of running on a pair of tracks, would be elevated using electromagnetic force by a single track within a tube (permanent magnets in the track, with variable magnets on the vehicle), and propelled by electromagnetic forces through tunnels. He estimated the trains could reach speeds of up to 4,000 km/h (2,500 mph) – about five times faster than a jet airliner – if the air was evacuated from the tunnels. To obtain such speeds, the vehicle would accelerate for the first half of the trip, and then decelerate for the second half of the trip. The acceleration was planned to be a maximum of about one-half of the force of gravity. O'Neill planned to build a network of stations connected by these tunnels, but he died two years before his first patent on it was granted. 526: 452: 322:, each car being directly welded, bolted, or otherwise firmly connected to the next, the route calling for no more bending than the flexibility of steel could easily handle. At the end of the line, the train would be moved sideways into the end chamber of the return tube. The railway would have both an inner evacuated tube and an outer tunnel. At cruise depth, the space between would have enough water to float the vacuum tube, softening the ride. 35: 2732: 1089: 597: 303:
departing train down to cruise level. Rising from cruise level, the arriving train would decelerate by compressing the rarefied air ahead of it, which would be vented. Pumps at the stations would make up for losses due to friction or air escaping around the edges of the train, the train itself requiring no motor. This combination of modified (shallow)
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could build a tube shuttle system using technologies available at that time. Maglev being poorly developed at the time, he proposed steel wheels. The chamber's door to the tube would be opened, and enough air admitted behind to accelerate the train into the tube. Gravity would further accelerate the
545:. Theoretically, this would incur two orders of magnitude less cost than current rockets. The StarTram proposal would have vehicles reach up to 14,300 to 31,500 km/h (8,900 to 19,600 mph) within a lengthy acceleration tunnel. 273:
wrote about intercontinental vactrain called "organowiec", which moved in a transparent tube at a speed higher than 1,666 km/h (1,035 mph). Later in April 1962, the vactrain appears in the story "Mercenary" by
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and New York areas, the commuter version having longer, heavier trains, to be propelled less by air and more by gravity than the intercity version. The New York system was to have three lines, terminating in
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To that end, a few companies have been formed, and several interdisciplinary student-led teams are working to advance the technology. SpaceX built an approximately 1-mile-long (1.6 km)
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claim to have achieved some work that resulted in a patent on "evacuated tube transport technology" which was granted in 2009. They presented their idea in 2013 on public stage.
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and surface transportation. He called underground Very High Speed Transportation (tube shuttles) his nation's "logical next step". The plans were never taken to the next stage.
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corridor. The Hyperloop concept has been explicitly "open-sourced" by Musk and SpaceX, and others have been encouraged to take the ideas and further develop them.
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but limit the system to subsonic speeds, hence initial routes of tens or hundreds of miles or kilometers rather than transcontinental distances were proposed.
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in the United States in 1904. Goddard subsequently refined the idea in a 1906 short story called "The High-Speed Bet" which was summarized and published in a
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editorial in 1909 called "The Limit of Rapid Transit". Esther, his wife, was granted a US patent for the vactrain in 1950, five years after his death.
212:, imagined a submarine pneumatic tube transport system that could propel a passenger capsule at speeds up to 1,800 km/h (1,100 mph) under the 444:. A trip would average 4,800 km/h (3,000 mph) and subject passengers to accelerations up to 1.4 times that of gravity, requiring the use of 513: 1006: 244: 2524: 448:
compartments. Enormous construction costs (estimated as high as US$ 1 trillion) were the primary reason why Salter's proposal was never built.
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in one hour. The tunnel would be buried to a depth of several hundred feet in solid rock formations. Construction would make use of
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maglev train, and operate in large tunnels reduced to the pressure altitude of 21,000 m (68,000 ft) at which the
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tackled the transoceanic problems with a proposal to float a tube above the ocean floor, anchored with cables (a
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Salter pointed out how such a system would help reduce the environmental damage being done to the atmosphere by
162:) speeds with relatively little power—up to 6,400–8,000 km/h (4,000–5,000 mph). This is 5–6 times the 78: 2585: 2510: 2446: 2294: 1352: 56: 188:
that could convey people or cargo through pressurized or evacuated tubes. The early atmospheric railways and
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would establish a transcontinental subway service in the United States and provide a commute from
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filed a patent application for a vactrain system. He called the company he wanted to form
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Alpha paper, proposing and examining a route running from the Los Angeles region to the
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At the time these reports were published, national prestige was an issue as
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built the world's first model of his proposed version of the vactrain at
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rock formations. The tunnel would maintain a partial vacuum to minimize
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Worcester Polytechnic Institute page discussing Goddard's achievements
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Joseph Giotta (Narrator), Powderhouse Productions (April 16, 2003).
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was proposed to leverage the invention of the experimental German
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Trans-Planetary Subway Systems = A Burgeoning Capability
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Experimental and prototype high-speed trains (category)
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Trans-Planetary Subway Systems: A Burgeoning Capability
278:, where he mentions Vacuum Tube Transport in passing. 220:) in a short story called "An Express of the Future". 959: 714:[Motion without friction. pre-α] (in Russian) 529:
An image of a proposed system of the Hyperloop system
592: 59:. Unsourced material may be challenged and removed. 960:"Why ET3? | Evacuated Tube Transport Technologies" 2750: 462:Starting in the late 1970s and early 1980s, the 292:An interview with Robert Salter appeared in the 281:During the 1970s, a leading vactrain advocate, 158:could permit vactrains to travel at very high ( 329:was laid out, with nine stations, one each in 260:Motion without friction (airless electric way) 2518: 1430: 1170: 872: 870: 1063: 2731: 2525: 2511: 1437: 1423: 1177: 1163: 1064:Etherington, Darrell (September 2, 2016). 867: 416:research was hot technology. The American 2532: 902: 558:, CEO of Tesla and SpaceX, published the 119:Learn how and when to remove this message 755: 732: 524: 450: 196:) relied on steam power for propulsion. 150:(magnetic levitation) line using partly 1037: 917: 265:In 1955, Polish science-fiction writer 184:of London conceived of and patented an 14: 2751: 843: 813: 783: 2506: 1418: 1158: 980: 876: 1038:Hawkins, Andrew J. (June 18, 2016). 709: 228:The vactrain proper was invented by 166:in Earth's atmosphere at sea level. 57:adding citations to reliable sources 28: 2488:Proposed high-speed rail by country 1444: 1315:California–Nevada Interstate Maglev 877:Dyson, Freeman J. (February 1993). 693:"Vacuum tube transportation system" 623: 24: 1145:China Plans 1,000 km/h Super Train 918:Daniels, Lee A. (April 29, 1992). 790:The Very High Speed Transit System 25: 2780: 1080: 658: 2730: 2146:List of high-speed railway lines 1087: 981:Oster, Daryl (October 9, 2013). 595: 481:, a founder and chairman of the 408:had been operating its showcase 311:propulsion would consume little 142:) is a proposed design for very- 33: 2685:Vehicular communication systems 1057: 1031: 999: 974: 952: 930: 911: 837: 763:Analog Science Fiction and Fact 520: 485:project, and Japanese engineer 234:Worcester Polytechnic Institute 223: 199: 192:transport systems (such as the 169: 44:needs additional citations for 984:Speedy Travel in a Vacuum Tube 807: 777: 749: 726: 703: 685: 667: 652: 13: 1: 1371:Shanghai–Hangzhou Maglev Line 756:Reynolds, Mack (April 1962). 616: 2155:By countries and territories 1359:Qingyuan Maglev Tourist Line 1258:High Speed Surface Transport 735:"Five Hundred Miles an Hour" 712:"Движение без трения. pre-α" 432:to ensure alignment and use 365:systems were mapped for the 256:Tomsk Polytechnic University 7: 2708:Automated vacuum collection 2160:planned networks in italics 588: 243:In 1909, Russian professor 10: 2785: 1210:Electromagnetic suspension 1184: 1118:February 27, 2016, at the 661:"An Express of the Future" 474:SST was certified to fly. 318:Trains were to require no 194:Dalkey Atmospheric Railway 173: 154:tubes or tunnels. Reduced 131:Train inside a vacuum tube 2726: 2693: 2619: 2556: 2547: 2540: 2483: 2465: 2337: 2235: 2191: 2168: 2154: 2136: 2123: 1884: 1729: 1677:TGV Sud-Est (refurbished) 1542: 1508: 1499: 1462: 1452: 1403: 1387: 1296: 1250: 1216:Electrodynamic suspension 1192: 1125:Vac Trains at Orion's Arm 498:submerged floating tunnel 2634:Alternative fuel vehicle 2076:British Rail Classes 800 879:"Gerard Kitchen O'Neill" 733:Weinberg, Boris (1917). 566:, roughly following the 146:transportation. It is a 2764:Proposed infrastructure 2596:Pulse detonation engine 2566:Adaptive compliant wing 2138:High-speed railway line 1986:NSB Class 71 (Flytoget) 1321:Changsha Maglev Express 739:Popular Science Monthly 611:Beach Pneumatic Transit 581:at its headquarters in 436:probes to melt through 2665:Personal rapid transit 2586:High-altitude platform 1867:TGV Sud-Est (original) 1395:Lathen train collision 1331:Incheon Airport Maglev 1200:Linear induction motor 995:– via Idea City. 648:on September 27, 2011. 632:"Transatlantic Tunnel" 579:pod design competition 564:San Francisco Bay Area 530: 503:On November 18, 1991, 459: 412:for several years and 2534:Emerging technologies 1833:Shinkansen Series 200 1647:Shinkansen Series 500 1520:China Railway CR400AF 1365:Shanghai Maglev Train 1140:Hydrogen Tube Vehicle 583:Hawthorne, California 528: 454: 327:Northeast Megalopolis 2680:Transit Elevated Bus 2611:Supersonic transport 1810:Renfe Class 120, 121 1552:Renfe Class 100, 101 1534:Shinkansen Series L0 1406:Proposals in italics 325:A route through the 218:transatlantic tunnel 53:improve this article 2703:Pneumatic transport 2646:Ground-effect train 2571:Backpack helicopter 2016:Shinkansen series 0 1388:Transport Accidents 1205:Magnetic levitation 895:1993PhT....46b..97D 637:Extreme Engineering 458:as proposed in 2005 309:atmospheric railway 271:The Magellan Nebula 238:Scientific American 186:atmospheric railway 176:Atmospheric railway 1914:China Railway DJJ1 1887:(124–155 mph) 1732:(155–186 mph) 1701:M (Avelia Horizon) 1545:(186–217 mph) 1242:Lift-to-drag ratio 1237:Eddy current brake 1097:has a profile for 1019:on January 1, 2020 924:The New York Times 697:patents.google.com 531: 460: 2746: 2745: 2722: 2721: 2718: 2717: 2500: 2499: 2496: 2495: 2162: 2132: 2131: 1885:200–249 km/h 1730:250–299 km/h 1543:300–349 km/h 1501:High-speed trains 1412: 1411: 1407: 1309:Birmingham Maglev 1103: 1007:"Hyperloop Alpha" 904:10.1063/1.2808821 845:Salter, Robert M. 817:(February 1978), 815:Salter, Robert M. 785:Salter, Robert M. 710:Weinberg, Boris. 642:Discovery Channel 509:VSE International 505:Gerard K. O'Neill 487:Yoshihiro Kyotani 479:Frank P. Davidson 295:Los Angeles Times 232:as a freshman at 230:Robert H. Goddard 140:vacuum tube train 129: 128: 121: 103: 16:(Redirected from 2776: 2734: 2733: 2675:Self-driving car 2639:Hydrogen vehicle 2554: 2553: 2545: 2544: 2527: 2520: 2513: 2504: 2503: 2166: 2165: 2158: 2110:Voyager/Meridian 1778:CR300AF, CR300BF 1711:Thalys PBA, PBKA 1506: 1505: 1439: 1432: 1425: 1416: 1415: 1405: 1347:Northeast Maglev 1227:Magnetic bearing 1179: 1172: 1165: 1156: 1155: 1101: 1091: 1090: 1074: 1073: 1061: 1055: 1054: 1052: 1050: 1035: 1029: 1028: 1026: 1024: 1018: 1012:. 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Salter 253: 124: 117: 113: 110: 104: 102: 61: 37: 29: 21: 2784: 2783: 2779: 2778: 2777: 2775: 2774: 2773: 2759:High-speed rail 2749: 2748: 2747: 2742: 2714: 2689: 2615: 2536: 2531: 2501: 2492: 2479: 2461: 2333: 2231: 2187: 2157: 2156: 2150: 2128: 2119: 2066:Z-TER (Z 21500) 1886: 1880: 1731: 1725: 1637:KTX-Cheongryong 1544: 1538: 1512: 1510: 1495: 1458: 1448: 1446:High-speed rail 1443: 1413: 1408: 1399: 1383: 1326:Chūō Shinkansen 1304:Beijing line S1 1292: 1246: 1188: 1183: 1135:Popular science 1120:Wayback Machine 1109: 1108: 1107: 1092: 1088: 1083: 1078: 1077: 1062: 1058: 1048: 1046: 1036: 1032: 1022: 1020: 1016: 1009: 1005: 1004: 1000: 990: 988: 979: 975: 965: 963: 962:. US: ET3. 2013 958: 957: 953: 943: 941: 936: 935: 931: 916: 912: 875: 868: 859: 857: 842: 838: 829: 827: 812: 808: 799: 797: 787:(August 1972), 782: 778: 768: 766: 754: 750: 731: 727: 717: 715: 708: 704: 691: 690: 686: 673: 672: 668: 659:Verne, Michel. 657: 653: 629: 628: 624: 619: 601: 594: 591: 554:In August 2013 535:James R. Powell 523: 514:Magnetic Flight 489: 300:U.S. government 247: 226: 202: 182:George Medhurst 178: 172: 144:high-speed rail 132: 125: 114: 108: 105: 62: 60: 50: 38: 23: 22: 15: 12: 11: 5: 2782: 2772: 2771: 2769:Vacuum systems 2766: 2761: 2744: 2743: 2741: 2740: 2727: 2724: 2723: 2720: 2719: 2716: 2715: 2713: 2712: 2711: 2710: 2699: 2697: 2691: 2690: 2688: 2687: 2682: 2677: 2672: 2667: 2662: 2657: 2648: 2643: 2642: 2641: 2631: 2625: 2623: 2617: 2616: 2614: 2613: 2608: 2603: 2598: 2593: 2588: 2583: 2578: 2576:Delivery drone 2573: 2568: 2562: 2560: 2551: 2542: 2538: 2537: 2530: 2529: 2522: 2515: 2507: 2498: 2497: 2494: 2493: 2491: 2490: 2484: 2481: 2480: 2478: 2477: 2469: 2467: 2463: 2462: 2460: 2459: 2457:United Kingdom 2454: 2449: 2444: 2439: 2434: 2429: 2422: 2417: 2412: 2407: 2400: 2395: 2390: 2385: 2380: 2375: 2370: 2367:Czech Republic 2363: 2356: 2351: 2343: 2341: 2335: 2334: 2332: 2331: 2324: 2319: 2314: 2307: 2302: 2297: 2292: 2285: 2280: 2273: 2266: 2261: 2254: 2253: 2252: 2241: 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1798: 1795: 1791: 1787: 1784: 1781: 1779: 1777: 1771: 1767: 1763: 1759: 1758:CRH1A, 1B, 1E 1756: 1755: 1749: 1745: 1742: 1740: 1737: 1736: 1734: 1728: 1722: 1719: 1717: 1714: 1712: 1709: 1707: 1704: 1702: 1698: 1694: 1690: 1686: 1682: 1678: 1675: 1673: 1670: 1668: 1664: 1660: 1656: 1652: 1648: 1645: 1643: 1640: 1638: 1634: 1633:II (Sancheon) 1630: 1627: 1625: 1622: 1620: 1616: 1615:Eurostar e300 1613: 1611: 1608: 1606: 1603: 1601: 1597: 1593: 1589: 1585: 1581: 1577: 1574: 1573: 1568: 1566: 1563: 1561: 1557: 1553: 1550: 1549: 1547: 1541: 1535: 1532: 1530: 1527: 1525: 1521: 1518: 1517: 1515: 1509:350 km/h 1507: 1504: 1502: 1498: 1492: 1489: 1487: 1483: 1480: 1478: 1475: 1473: 1470: 1469: 1467: 1465: 1461: 1457: 1451: 1447: 1440: 1435: 1433: 1428: 1426: 1421: 1420: 1417: 1402: 1396: 1393: 1392: 1390: 1386: 1380: 1379: 1378:UK Ultraspeed 1375: 1373: 1372: 1368: 1366: 1363: 1361: 1360: 1356: 1354: 1351: 1349: 1348: 1344: 1342: 1339: 1337: 1334: 1332: 1329: 1327: 1324: 1322: 1319: 1317: 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1824:SBB RABe 501 1775: 1753: 1706:TCDD HT80000 1571: 1485: 1472:Conventional 1464:Technologies 1376: 1369: 1357: 1345: 1313: 1272: 1193:Technologies 1130:Rail Journal 1099: 1069: 1059: 1047:. 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Retrieved 705: 696: 687: 678: 669: 654: 646:the original 636: 625: 572: 568:Interstate 5 553: 547: 539:space launch 532: 521:21st century 512: 508: 502: 476: 461: 417: 414:maglev train 403: 396: 388:White Plains 351:Rhode Island 343:Pennsylvania 324: 317: 293: 291: 280: 270: 264: 259: 242: 237: 227: 224:20th century 206:Michel Verne 203: 200:19th century 179: 170:18th century 139: 135: 133: 115: 106: 96: 89: 82: 75: 63: 51:Please help 46:verification 43: 26: 18:Vacuum train 2447:Switzerland 2410:Netherlands 2295:South Korea 1588:MTR CRH380A 1268:Launch loop 1049:October 19, 1023:November 3, 769:January 19, 758:"Mercenary" 679:gizmodo.com 490: [ 422:Los Angeles 359:Connecticut 269:in a novel 248: [ 210:Jules Verne 2753:Categories 2606:Spaceplane 2581:Flying car 2322:Uzbekistan 2289:Kazakhstan 1770:5A, 5E, 5G 1744:China Star 1681:Atlantique 1565:Alstom AGV 1529:Transrapid 1477:Hovertrain 1353:ODU maglev 1283:Transrapid 1263:Inductrack 1070:TechCrunch 991:October 9, 966:October 9, 745:: 705–708. 617:References 468:Transrapid 464:Swissmetro 456:Swissmetro 410:shinkansen 392:St. George 380:Huntington 160:hypersonic 109:April 2018 79:newspapers 68:"Vactrain" 2651:Hyperloop 2549:Transport 2474:Australia 2264:Indonesia 2250:Hong Kong 2200:Argentina 2105:Talgo XXI 2001:Pendolino 1716:THSR 700T 1482:Hyperloop 1100:Vactrain 1044:The Verge 944:April 28, 889:(2): 98. 560:Hyperloop 556:Elon Musk 541:, dubbed 533:In 2001, 446:gimballed 418:Planetran 384:Elizabeth 208:, son of 204:In 1888, 180:In 1799, 152:evacuated 2695:Pipeline 2655:Vactrain 2601:Scramjet 2591:Jet pack 2426:Portugal 2311:Thailand 2192:Americas 1904:Adelante 1871:La Poste 1828:RABe 503 1486:Vactrain 1454:Part of 1288:SCMaglev 1278:StarTram 1273:Vactrain 1222:Guideway 1150:Cargocap 1116:Archived 1102:(Q58181) 847:(1978), 589:See also 575:subscale 543:StarTram 472:Concorde 434:tungsten 399:aviation 376:Paterson 347:New York 339:Delaware 335:Maryland 320:couplers 136:vactrain 2670:Platoon 2466:Oceania 2388:Germany 2378:Finland 2373:Denmark 2360:Croatia 2354:Belgium 2348:Austria 2328:Vietnam 2176:Morocco 2006:Railjet 1981:Javelin 1800:KTX-Eum 1610:ETR 400 1605:ETR 500 1524:CR400BF 1513:or more 1251:Systems 1095:Scholia 891:Bibcode 438:igneous 372:Babylon 93:scholar 2558:Aerial 2541:Fields 2452:Turkey 2442:Sweden 2432:Russia 2420:Poland 2415:Norway 2404:Latvia 2393:Greece 2383:France 2339:Europe 2317:Turkey 2305:Taiwan 2221:Mexico 2214:Canada 2207:Brazil 2169:Africa 2061:SJ X40 2057:X 2000 2052:SCB-40 2042:Re 460 2011:Regina 1934:CR200J 1930:Fuxing 1899:ACS-64 1819:Sapsan 1776:Fuxing 1689:Duplex 1685:Réseau 1491:Maglev 1341:M-Bahn 1336:Linimo 1186:Maglev 860:May 9, 430:lasers 390:, and 313:energy 148:maglev 95:  88:  81:  74:  66:  2437:Spain 2398:Italy 2283:Japan 2258:India 2245:China 2182:Egypt 2071:Sokol 2047:SC-44 1976:ICE L 1968:ICE T 1944:HHP-8 1939:ER200 1920:Hexie 1894:Acela 1857:E7/W7 1796:(ICx) 1754:Hexie 1672:AVRIL 1659:E5/H5 1655:N700S 1642:Oaris 1629:KTX-I 1624:ICE 3 1576:CRH2C 1572:Hexie 1297:Lines 1218:(EDS) 1212:(EMS) 1017:(PDF) 1010:(PDF) 494:] 406:Japan 252:] 100:JSTOR 86:books 2737:List 2621:Land 2277:Iraq 2270:Iran 2237:Asia 1954:ICNG 1924:CRH6 1876:V250 1748:DJF2 1651:N700 1619:e320 1600:380D 1596:380C 1592:380B 1584:380A 1051:2016 1025:2019 993:2017 987:. US 968:2017 946:2011 862:2021 832:2011 802:2011 771:2015 720:2015 442:drag 307:and 138:(or 72:news 2100:810 2096:807 2092:805 2088:803 2084:802 2080:801 2024:400 2020:100 1963:225 1949:IC4 1909:APT 1845:800 1841:700 1837:300 1814:130 1783:ICE 1697:2N2 1693:POS 1560:103 1556:102 899:doi 549:ET3 424:to 285:of 216:(a 55:by 2755:: 2653:/ 2115:X3 2098:, 2094:, 2090:, 2086:, 2082:, 2078:, 2059:, 2032:E4 2030:, 2028:E1 2026:, 2022:, 2018:, 1974:, 1972:TD 1970:, 1961:, 1926:, 1916:, 1869:, 1855:, 1853:E3 1851:, 1849:E2 1847:, 1843:, 1839:, 1835:, 1826:, 1812:, 1792:, 1788:, 1772:, 1768:, 1766:3A 1764:, 1760:, 1750:, 1746:, 1699:, 1695:, 1691:, 1687:, 1683:, 1679:, 1667:E8 1665:, 1663:E6 1661:, 1657:, 1653:, 1649:, 1635:, 1631:, 1617:; 1598:, 1594:, 1590:, 1586:/ 1582:, 1580:3C 1578:, 1558:, 1554:, 1522:, 1068:. 1042:. 922:. 897:. 887:46 885:. 881:. 869:^ 853:, 823:, 793:, 760:. 743:90 741:. 737:. 695:. 677:. 640:. 634:. 585:. 492:ja 394:. 386:, 382:, 378:, 374:, 361:. 353:, 349:, 345:, 341:, 337:, 333:, 262:. 250:ru 134:A 2526:e 2519:t 2512:v 1794:4 1790:2 1786:1 1484:/ 1438:e 1431:t 1424:v 1178:e 1171:t 1164:v 1106:. 1072:. 1053:. 1027:. 970:. 948:. 926:. 907:. 901:: 893:: 773:. 722:. 699:. 681:. 663:. 122:) 116:( 111:) 107:( 97:· 90:· 83:· 76:· 49:. 20:)

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high-speed rail
maglev
evacuated
air resistance
hypersonic
speed of sound
Atmospheric railway
George Medhurst
atmospheric railway
pneumatic tube
Dalkey Atmospheric Railway
Michel Verne
Jules Verne
Atlantic Ocean
transatlantic tunnel
Robert H. Goddard
Worcester Polytechnic Institute
Boris Weinberg

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