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    <title>Transport Research International Documentation (TRID)</title>
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    <copyright>Copyright © 2026. National Academy of Sciences. All rights reserved.</copyright>
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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>SECOND REPORT FROM THE SELECT COMMITTEE ON SCIENCE AND TECHNOLOGY: ADVANCED GROUND TRANSPORT, SESSION 1975-76, REPORT AND APPENDICES</title>
      <link>https://trid.trb.org/View/51069</link>
      <description><![CDATA[The result of an inquiry held in 1973 by the Select Committee on Science and Technology of Session 1972-73 into the circumstances surrounding the termination of the work of Tracked Hovercraft Ltd (THL) is discussed, and a review presented of developments that followed the publication of the committee's report.  The original objective of THL is described as to build a three mile full-scale test track and two research vehicles: one, on rubber tyres, to test linear motors, controls and current collection up to 150 mile/h, and the other to test non-contact suspension systems and linear motors up to 300 mile/h.  The report of the Science Research Council (SRC) panel on advanced ground transport published in October 1975 is discussed in relation to proposals that had been presented by Imperial College concerning the future use of the THL facilities at Earith, Huntingdonshire, and to the proposal for the establishment of an SRC research institute based at Earith.  Research needs are reviewed in respect of evidence provided by the Department of the Environment and the Department of Industry jointly, and prospects for advanced ground transport development presented for consideration.  Conclusions and recommendations include proposals that the SRC should accept, in principle, proposals for the provision of a central research facility to focus and stimulate research and to improve the provision of trained manpower; and that the government should enter into immediate negotiations with European governments, in particular those of France and the Federal Republic of Germany, and with the commission of the EEC, aimed at the maximum possible pooling of national facilities for AGT research.]]></description>
      <pubDate>Wed, 31 Aug 1977 00:00:00 GMT</pubDate>
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      <title>NEW TECHNOLOGIES FOR GUIDED TRANSPORT SYSTEMS. UP-TO-DATE DESCRIPTION OF THE STATE OF RESEARCH AND DEVELOPMENT, MAJOR PARAMETERS FOR OPERATIONAL UNCONVENTIONAL HIGH SPEED TRANSPORT SYSTEMS</title>
      <link>https://trid.trb.org/View/15366</link>
      <description><![CDATA[The report gives an up-to-date account of the estate of research and development in the field on non-conventional high speed transport systems in the USA, in Japan and Europe and attempts to give a forecast of practical applications expected in this field in the near and more distant future. In continuation of the work described in RP 1 further parameters for the high speed application of magnetic levitation systems were calculated with the SYSMAG computer model; the model was extended to permit calculation of data for synchronous linear motor propulsion with the active part in the track.]]></description>
      <pubDate>Wed, 17 Nov 1976 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/15366</guid>
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      <title>TRACKED AIR CUSHION RESEARCH VEHICLE--DYNAMICS SIMULATION PROGRAM USER'S MANUAL</title>
      <link>https://trid.trb.org/View/16095</link>
      <description><![CDATA[A digital computer program was generated for use on the IBM 370/165 to evaluate the dynamic characteristics of the tracked air cushion research vehicle.  The manual provides a summary review of the analytical basis, the construction of the computer program and the necessary instructions for the use of the program.  The analytical model is formulated with the primary objective of obtaining vehicle ride qualities. The major vehicle components (body, chassis, guidance cushions and levitation cushions) supported by the vehicle suspension system are represented in a dynamic mathematical model with a maximum of twenty degrees of freedom.  The non-linear response of this model to rigid and flexible guideway excitations, turn and superelevation excitations, and aerodynamic forces are obtained using numerical integration.]]></description>
      <pubDate>Mon, 10 Jun 1974 00:00:00 GMT</pubDate>
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      <title>DYNAMIC RESPONSE TESTS OF AN AIR CUSHION SUSPENSION SYSTEM FOR THE LINEAR INDUCTION MOTOR (LIM) OF THE TRACKED AIR CUSHION RESEARCH VEHICLE(TACRV)</title>
      <link>https://trid.trb.org/View/7110</link>
      <description><![CDATA[The report presents the results of a test program to determine the dynamic response characteristics of an air cushion suspension system.  The air cushion and secondary suspension are designed for the support and guidance of the linear induction motor (LIM) on the 300 mph Tracked Air Cushion Research Vehicle (TACRV).  The tests simulate the motion of the suspension system on the TACRV moving over a guideway with sinusoidal surface irregularities.  The test variables included oscillatory excitation amplitude, air supply system admittance, air cushion skirt configuration and reaction rail flexibility.  Test results are compared to theoretical response predictions for both the LIM support and guidance systems.  (Author)]]></description>
      <pubDate>Sat, 24 Nov 1973 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/7110</guid>
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      <title>THE TRACKED AIR CUSHION RESEARCH VEHICLE (TACRV)</title>
      <link>https://trid.trb.org/View/7165</link>
      <description><![CDATA[The Department of Transportation's (DOT) Tracked Air Cushion Research Vehicle (TACRV) System is described using descriptive material and data provided by the design contractors and the Federal Railroad Administration, Office of Research, Development, and Demonstrations.  The TACRV is an experimental vehicle that will carry out research pertinent to evaluating the technical feasibility of the tracked air cushion vehicle (TACV) concept for commercial high-speed ground transportation.  The report includes background information, detailed design descriptions, and vehicle performance estimates.  (Author)]]></description>
      <pubDate>Fri, 09 Mar 1973 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/7165</guid>
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      <title>TRACKED AIR CUSHION RESEARCH VEHICLE AERODYNAMIC ANALYSIS</title>
      <link>https://trid.trb.org/View/7416</link>
      <description><![CDATA[Basic aerodynamic coefficients for the Tracked Air Cushion Research Vehicle (TACRV) are developed by analysis of data obtained during wind tunnel tests of a 1/10 scale model. Vehicle lift and drag are found to be primarily a function of the dynamic pressure to average cushion pressure ratio. Vehicle lift is 8370 lb at 300 mph (11,900 lb in a 60 mph crosswind at that speed), well below the vehicle cushion supported weight of 51,950 lb.  Vehicle drag is 7920 lb at 300 mph; drag levels can be reduced 10-15 percent with an aft streamline tail fairing.  (Author)]]></description>
      <pubDate>Fri, 09 Mar 1973 00:00:00 GMT</pubDate>
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