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    <title>Transport Research International Documentation (TRID)</title>
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    <managingEditor>tris-trb@nas.edu (Bill McLeod)</managingEditor>
    <webMaster>tris-trb@nas.edu (Bill McLeod)</webMaster>
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      <title>Transport Research International Documentation (TRID)</title>
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      <title>TUEV EVALUATES THE MAGNETIC LEVITATION TRAIN IN EMSLAND. REPRINT</title>
      <link>https://trid.trb.org/View/294249</link>
      <description><![CDATA[Presented is the evaluation of the magnetic levitation train in Emsland.]]></description>
      <pubDate>Fri, 31 Mar 1989 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/294249</guid>
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      <title>CONFERENCE ON CONTROL ASPECTS OF NEW FORMS OF GUIDED LAND TRANSPORT, HELD AT THE INSTITUTION OF ELECTRICAL ENGINEERS, LONDON, 28-30TH AUGUST, 1974</title>
      <link>https://trid.trb.org/View/33577</link>
      <description><![CDATA[The following papers were presented at the conference: Design of a Multivariable Controller for a Magnetically Supported Vehicle, Hazlerigg, ADG and Sinha, PK; Power Amplifier and Magnet Techniques in Controlled Levitation Systems, Hodkinson, RL; Transducers and their Influence in the Design of Magnetically Suspended Vehicles, Jayamant, BV, Hodkinson, RL, Wheeler, AR and Whorlow, RJ; Magnetic Suspension of Transport Vehicles, Lhenry, M, Gilles, G and Ivanes, MI; Computing, Designing and Testing Levitation Magnets at Messerschmitt - Boelkow - Blohn, Nave, M; Modelling and a Study of the Maglev Concept, Parker, JH, Charles, RJ, Renfrew, RM, Billing, JR, Crate, GF, Gagne, RE and Amyot, R; Maglev Vehicle Oscillations and Damping Mechanisms, Rhodes, RG, Mulhall, BE and Abel, E; A Controlled Electromagnetic Levitating Frame of a Track-bound Vehicle, Von Thun, HJ and Zimmerman, H.  For the covering abstract of the conference, see IRRD Abstract No. 400100. /TRRL/]]></description>
      <pubDate>Thu, 18 Nov 1982 00:00:00 GMT</pubDate>
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      <title>THE MAGNETIC SUSPENSION AND GUIDANCE OF HIGH SPEED VEHICLES</title>
      <link>https://trid.trb.org/View/132908</link>
      <description><![CDATA[THIS REPORT DESCRIBES A PROGRAM OF RESEARCH CARRIED OUT ON SUPERCONDUCTING MAGNETIC SUSPENSIONS FOR HIGH SPEED VEHICLES, DURING A TWELVE MONTH PROJECT WHICH STARTED IN SEPTEMBER 1971. THIS REPORT DEALS MAINLY WITH THE TECHNICAL AND ECONOMIC ASSESSMENT WORK CARRIED OUT AT CRANFIELD, INSTITUTE OF TECHNOLOGY. THERE ARE A NUMBER OF MAGNETIC SUSPENSIONS OF WHICH SUPERCONDUCTING SUSPENSIONS ARE A SUBSET. IN THESE SUSPENSIONS THE SUSPENDING MAGNET TAKES THE FORM OF A POWERFUL SUPERCONDUCTING ELECTROMAGNET. AS THIS ELECTROMAGNET MOVES OVER CONDUCTING SHEETS OR LOOPS IT INDUCES CURRENTS IN THEM WHICH REPEL THE MAGNET. BY PLACING THE MAGNETS ON A VEHICLE AND THE CONDUCTORS ON ITS TRACK, THESE REPULSIVE FORCES CAN BE USED TO GUIDE AND SUPPORT THE VEHICLE AT VERY HIGH SPEEDS. IN ASSESSING THIS SUSPENSION FOR USE IN HIGH-SPEED TRANSPORT, ATTENTION IS PAID MORE TO THE VEHICLE AND TRANSPORT SYSTEM OF WHICH THE SUSPENSION IS A PART THAN IT IS TO THE SUSPENSION ITSELF. A NUMBER OF VEHICLE-TRACK DESIGNS HAVE BEEN PRODUCED AND EVALUATED FOR CAPITAL AND OPERATING COSTS. THESE OPERATING COSTS RANGE FROM 3.93P TO 5.62P PER PASSENGER KILOMETER FOR A (TWIN TRACK) THROUGHPUT OF 2,500 PASSENGERS PER DAY, TO 0.60P TO 0.97P PER PASSENGER KILOMETER FOR A THROUGHPUT OF 30,000 PASSENGERS PER DAY, DEPENDING ON THE SUSPENSION METHOD AND PROPULSION METHOD USED. THE ABOVE COSTS ARE FOR SYSTEMS USING TRACKS ON NEW ALIGNMENTS. COSTS HAVE ALSO BEEN PRODUCED FOR CONVERTED TRACKS. IT IS SEEN, WHEN MAKING COMPARISONS, THAT PROPULSION SYSTEMS USING POWER COLLECTED FROM THE TRACK ARE MORE EXPENSIVE THAN THOSE USING POWER GENERATED ON BOARD THE VEHICLE AND THAT ONE FORM OF SUSPENSION (THE CONDUCTING SHEET SUSPENSION) IS SLIGHTLY MORE EXPENSIVE THAN THE OTHER (NULL FLUX SUSPENSION). COMPARISONS WITH OTHER SYSTEMS, TREATED IN THE SAME WAY SHOW THAT COSTS ARE SIMILAR TO THOSE FOR AIR CUSHION VEHICLES AND DUORAIL VEHICLES. THE PROPOSED CRUISE SPEED OF THE MAGNETICALLY SUSPENDED VEHICLES IS 134 M/S (OR 300 MPH) WHICH IS SOMEWHAT HIGHER THAN THAT OF THE AIR CUSHION VEHICLE CONSIDERED, AND MUCH HIGHER THAN THAT OF ANY DUORAIL SYSTEM. ANY ADVANTAGES ACCRUING TO THESE HIGHER SPEEDS, FROM SAVINGS IN TIME OR INCREASED DEMAND HAVE BEEN IGNORED, HOWEVER. THE REPORT PRESENTS A BRIEF TECHNICAL DESCRIPTION AND COSTINGS FOR SOME OF THE DESIGNS PRODUCED. OPERATING COSTS, AND COMPARISONS BETWEEN THEM, ARE THEN PRESENTED IN A SEPARATE SECTION WHICH IS FOLLOWED BY THE CONCLUSIONS AND SUGGESTIONS FOR FUTURE WORK. THE CONCLUSIONS ARE, ESSENTIALLY, THAT SUPERCONDUCTING MAGNET SUSPENSIONS ARE BOTH TECHNICALLY AND ECONOMICALLY VIABLE, PENDING THE OUTCOME OF A CERTAIN AMOUNT OF BASIC RESEARCH ON THE CHARACTERISTICS OF THE SUSPENSION ITSELF. /AUTHOR/]]></description>
      <pubDate>Thu, 11 Apr 1974 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/132908</guid>
    </item>
    <item>
      <title>STUDY OF ACTIVE MAGNETIC SUSPENSION USING CONTROLLED DC MAGNETS- OUTLINE DESIGN OF A 30-PASSENGER VEHICLE FOR URBAN TRANSPORT</title>
      <link>https://trid.trb.org/View/129414</link>
      <description><![CDATA[THE OBJECTIVES OF THIS SUTDY WERE TWOFOLD. THE FIRST ONE WAS TO EXAMINE THE TECHNOLOGY ON THE BASIS OF WORK IN THE FIELD AT THE UNIVERSITY OF SUSSEX AND TO SHOW THAT A SYSTEM OF MAGNETICALLY SUSPENDED VEHICLES IS FEASIBLE WITHIN THE SPECIFICATIONS LAID DOWN IN THIS DOCUMENT. THE SECOND OBJECTIVE WAS TO CONSIDER THE DESIGN OF A 30-PASSENGER VEHICLE EVOLVED FOR THE FIRST OBJECTIVE IN THE LIGHT OF A REAL LIFE SITUATION SUCH AS THE A38 BIRMINGHAM CORRIDOR, AND TO SHOW IN A COMPARATIVE STUDY WHETHER MAGNETIC SUSPENSION TECHNOLOGY CONFERS AND ADVANTAGES OVER THOSE ALREADY PROPOSED OR OVER ANY OTHER POSSIBLE ALTERNATIVE WHEELED, BUT GUIDED, SYSTEMS. THE 30-PASSENGER VEHICLE DESIGNED FOR THIS STUDY CAN BE EITHER CEILING OR FLOOR SUPPORTED. HOWEVER, THE LATTER VERSION MAY BE MORE SUITABLE FOR THE CORRIDER TYPE OF APPLICATION. THE DESIGN CONSIDERED IS CAPABLE OF CARRYING A PAYLOAD OF 2000 KG AND WEIGHS 6250 KG. IT HAS A 60 KW LINEAR INDUCTION MOTOR AS A PROPOSION UNIT, GIVING IT A MAXIMUM SPEED OF OVER 70 M.P.H. THE COST OF A PRODUCTION TYPE CAN BE MODIFIED TO EITHER A 1000 KG VEHICLE (4PASSENGERS) OR 10,000 KG (60 PASSENGERS). /TRRL/]]></description>
      <pubDate>Tue, 11 Dec 1973 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/129414</guid>
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    <item>
      <title>HIGH-SPEED TRANSPORTATION VIA MAGNETICALLY SUPPORTED VEHICLES. A STUDY OF THE MAGNETIC FORCES</title>
      <link>https://trid.trb.org/View/113470</link>
      <description><![CDATA[THE PARAMETERS AFFECTING THE MAGNETIC BUOYANCY AND RESISTANCE FORCES WERE ANALYZED FOR A VEHICLE EQUIPPED WITH SUPPORTING MAGNETS WHICH IS SUSPENDED ON A CONDUCTING TRACK-BED. IN PARTICULAR THE EFFECT OF A TRACK-BED OF FINITE WIDTH WAS INVESTIGATED. THE MEASUREMENTS EXTENDED TO THE FORCES ACTING ON A PERMANENTLY EXCITED SUPERCONDUCTING COIL, THE COIL BEING SUSPENDED OVER A ROTATING ALUMINIUM WHEEL WITH PERIPHERAL SPEEDS UP TO 480 KM/H. CALCULATIONS AND MEASUREMENTS SHOWED THAT THE IMPORTANT PARAMETER IS THE REYNOLDS NUMBER LAMBA = VH (MU) (SIGMA), WHERE MU AND SIGMA REPRESENT THE PERMEABILITY AND CONDUCTIVITY OF THE TRACK-BED, V THE VELOCITY OF THE VEHICLE AND H THE OPERATIONAL HEIGHT OF THE MAGNET OF THE VEHICLE. THE EFFICIENCY OF THE SYSTEM, EXPRESSED AS THE RATIO OF THE BUOYANCY TO THE RESISTANCE, IS PROPORTIONAL TO THE SQUARE ROOT OF LAMBA. /TR/]]></description>
      <pubDate>Mon, 15 Nov 1971 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/113470</guid>
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