Simulation model for the study of overhead rail current collector systems dynamics, focused on the design of a new conductor rail

Overhead rigid conductor arrangements for current collection for railway traction have some advantages compared to other, more conventional, energy supply systems. They are simple, robust and easily maintained, not to mention their flexibility as to the required height for installation, which makes them particularly suitable for use in subway infrastructures. Nevertheless, due to the increasing speeds of new vehicles running on modern subway lines, a more efficient design is required for this kind of system. In this paper, the authors present a dynamic analysis of overhead conductor rail systems focused on the design of a new conductor profile with a dynamic behaviour superior to that of the system currently in use. This means that either an increase in running speed can be attained, which at present does not exceed 110 km/h, or an increase in the distance between the rigid catenary supports with the ensuing saving in installation costs. This study has been carried out using simulation techniques. The ANSYS programme has been used for the finite element modelling and the SIMPACK programme for the elastic multibody systems analysis.

Yearly average performance of the principal solar collector types /

"January 1981."

A manual of the art of bookbinding : containing full instructions in the different branches of forwarding, gilding, and finishing : also, the art of marbling book-edges and paper : the whole designed for the practical workman, the amateur, and the book-collector /

Includes index.

Recent developments connected with the hypersonic facility of the Polytechnic Institute of Brooklyn. Pt. I: Tests of the compression heater. Pt. II: Aspects of the design, construction and installation of a multiple-outlet collector for the convection heater.

Mode of access: Internet.

The three Cruikshanks. A bibliographical catalogue, describing more than 500 works (including a few etchings and loose plates), with their correct collector's condition, number of etchings and woodcuts in the principal items, and their present market values, illustrated by Isaac, George, & Robert Cruikshank,

Mode of access: Internet.

English and French furniture & decorations : paintings, Georgian & other silver, English & other old ceramics, Chinese art & oriental rugs : property of the estate of the late Mrs. Lee Delafield : New York by order of City Bank Farmers Trust Company and W.E. Williams, executors : a valuable collection of table linens & laces from a California private collector together with property of Mrs. Guy Fairfax Cary, Mrs. Serge Landeau, other owners : public auction sale, January 26, 27 and 28 at 2 pm.

Cover title: English & French furniture and decorative objects.

A distingished collection of rare colorplate books, fore-edge paintings, extra-illustrated books, incunabula, illuminated manuscripts, original drawings: Aiken, Cruikshank, Rowlandson; the fine library of a New York collector. Unrestricted public auction sale ...

761 items.

The print collector; an introduction to the knowledge necessary for forming a collection of ancient prints. Containing suggestions as to the mode of commencing collector, the selection of specimens, the prices and care of prints. Also notices of the marks of proprietorship used by collectors, remarks on the ancient and modern practice of the art and a catalogue raisonné of books on engraving and prints.

Published anonymously. By Joseph Maberly.

Catalogue of the collection of Greek coins in gold, silver, electrum and bronze, of a late collector ... which will be sold by auction, by messrs. Sotheby, Wilkinson & Hodge ... on Monday, the 28th day of May, 1900, and three following days, at one o'clock precisely.

Mode of access: Internet.

Design and performance of large solar thermal collector arrays : proceedings of the International Energy Agency Workshop on the Design and Performance of Large Solar Thermal Collector Arrays, San Diego, California, 10-14 June 1984 /

Mode of access: Internet.

Rare American history, being the library of a well-known Philadelphia collector ... : to be sold Friday afternoon and evening, February 4th, 1910 ... Saturday morning and afternoon, February 5th, 1910 ... oder of slae, first sitting lots 1 to 350, second [sitting] [lots] 351 to 700, third [sitting] [lots] 701 to 1050, fourth [sitting] [lots] 1051 to end /

" ... comprising an extensive collection of works on the North American Indians; a large and select collection of genealogies, an unusual accumulation of church histories, and general American history, embracing state, county and town history, inland voyages and travels, narratives, biographies, bibliography, Revolutionary history, early poetry, &c."

Dana's manual of mineralogy for the student of elementary mineralogy, the mining engineer, the geologist, the prospector, the collector, etc.

Total issue, twenty-four thousand.