1.0Zelin FR PRINCIPALhttps://www.zelin.io/en/THdevhttps://www.zelin.io/en/author/thdev/rich600338<blockquote class="wp-embedded-content" data-secret="N6DzSkcHgQ"><a href="https://www.zelin.io/en/transport/rail-aerodynamic-efficiency/">Rail – Aerodynamic efficiency</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.zelin.io/en/transport/rail-aerodynamic-efficiency/embed/#?secret=N6DzSkcHgQ" width="600" height="338" title="“Rail – Aerodynamic efficiency” — Zelin FR PRINCIPAL" data-secret="N6DzSkcHgQ" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); //# sourceURL=https://www.zelin.io/wp-includes/js/wp-embed.min.js </script> Numerical modeling of the undercarriage enables us to assess its behavior in all types of traffic conditions, evaluate the impact of all its appendages, and then validate and optimize its aerodynamic efficiency.https://www.zelin.io/wp-content/uploads/IMG_ferroviaire_efficacite_aero.png