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Posted By

Scooter on 05/19/08


Tagged

fun


Versions (?)


Tractive Effort of a steam locomotive

Published in: PHP 

URL: http://reusablecode.blogspot.com/2008/05/tractive-effort.html

Only works for non-compound locomotives. (ie. single cylinder)

Plain TextExpand 
  1. <?php
  2.     /*
  3.     Copyright (c) 2008, reusablecode.blogspot.com; some rights reserved.
  4.  
  5.     This work is licensed under the Creative Commons Attribution License. To view
  6.     a copy of this license, visit http://creativecommons.org/licenses/by/3.0/ or
  7.     send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California
  8.     94305, USA.
  9.     */
  10.  
  11.     // Calculates the tractive effort of a non-compound steam locomotive.
  12.     function $tractiveEffort($cylinderDiameter, $stroke, $pressure, $wheelDiameter)
  13.     {
  14.         return $cylinderDiameter ^ 2 * $stroke * $pressure * 0.85 / $wheelDiameter;
  15.     }    
  16. ?>

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