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How do trains work?
\"Young readers will love this exciting, in-depth yet accessible look at trains, including how they work, the special equipment they need, and how they tote thousands of tons of cargo down the tracks\"--Provided by publisher.
Book
Induction Motor Computer Models in Three-Phase Stator Reference Frames
This book is a compilation of knowledge about computer models in the three-phase stator reference frame. Chapters explore several aspects of the topic and build upon research previously presented by contributors. The book aims to provide interesting solutions to problems encountered in the design of railway and analysis in railway motors. The modeling approaches proposed by the authors in this book may become an incentive for readers and researchers to develop their 'lifehacks' to solve new problems in induction motor design and testing. Key topics presented in the book: - Approximate calculations of induction motor equivalent T-shaped circuit parameters with the use of catalogue data - Simulations of different types of shaft load, including fluid coupling - Receiving static characteristics of an electric machine during simulation by means of dynamic model - Simulation of the electric drive's specific applications with three-phase induction motors building - Direct start of an induction motor as part of an auxiliary drive of an AC electric locomotive, containing a capacitor phase splitter, starting with different types of shaft loads (fan or compressor). Special attention has been given to the description of the thermal model of an induction motor with a squirrel-cage rotor, which makes it possible to simulate operating modes when powered by an unbalanced voltage, as well as with squirrel cage defects. The thermal model is presented as a detailed superstructure to the model of electromechanical processes of an induction electric machine. Other key features of the book include references for further reading, an appendix for the parameters of the equivalent thermal circuit of an NVA-55 induction motor. The material presented in the book is of interest to railway motor engineers, specialists in electromechanics and electric drives who use
SPICE-compatible CAD applications in their work.
eBook
Trains
\"Clacky-clack! Trains are chugging down the track! Learn how and where they do their work in this Machines! song. Includes glossary, critical thinking questions, and sheet music\"--Provided by publisher.
Book
Amtrak, America's Railroad
Discover the story of Amtrak, America's Railroad, 50
years in the making .
In 1971, in an effort to rescue essential freight
railroads, the US government founded Amtrak. In the post-World War
II era, aviation and highway development had become the focus of
government policy in America. As rail passenger services declined
in number and in quality, they were simultaneously driving many
railroads toward bankruptcy. Amtrak was intended to be the
solution.
In Amtrak, America's Railroad: Transportation's Orphan and
Its Struggle for Survival , Geoffrey H. Doughty, Jeffrey T.
Darbee, and Eugene E. Harmon explore the fascinating history of
this popular institution and tell a tale of a company hindered by
its flawed origin and uneven quality of leadership, subjected to
political gamesmanship and favoritism, and mired in a perpetual
philosophical debate about whether it is a business or a public
service. Featuring interviews with former Amtrak presidents, the
authors examine the current problems and issues facing Amtrak and
their proposed solutions.
Created in the absence of a comprehensive national
transportation policy, Amtrak manages to survive despite inherent
flaws due to the public's persistent loyalty. Amtrak, America's
Railroad is essential reading for those who hope to see
another fifty years of America's railroad passenger service,
whether they be patrons, commuters, legislators, regulators, and
anyone interested in railroads and transportation history.
eBook
Freight trains
\"Hop on a freight train to see where they go, what they carry, and why they are used around the world.\"--Back cover.
Book
Scheduled Service Network Design for Freight Rail Transportation
This paper addresses the scheduled service network design problem for freight rail transportation. The proposed model integrates service selection and scheduling, car classification and blocking, train makeup, and routing of time-dependent customer shipments based on a cyclic three-layer space-time network representation of the associated operations and decisions and their relations and time dimensions. This paper also proposes a matheuristic solution methodology integrating slope scaling, a dynamic block-generation mechanism, long-term-memory-based perturbation strategies, and ellipsoidal search, a new intensification mechanism to thoroughly explore very large neighborhoods of elite solutions restricted using information from the history of the search. Experimental results show that the proposed solution method is efficient and robust, yielding high-quality solutions for realistically sized problem instances.
Journal Article
Frugal traveler : hop on South Africa’s scenic night train in 360
Follow the Frugal Traveler for a memorable 26-hour train ride from Johannesburg to Cape Town.
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