1.0A.I.D.A. - Associazione Italiana di Aerofilateliahttps://www.aida-aerofilatelia.org/en/AIDA Webmasterhttps://www.aida-aerofilatelia.org/en/author/aidawbm/rich600338<blockquote class="wp-embedded-content" data-secret="rbyKeNVZDR"><a href="https://www.aida-aerofilatelia.org/en/2021/02/16/the-jump-of-grillo-cricket/">The jump of “Grillo” (cricket)</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.aida-aerofilatelia.org/en/2021/02/16/the-jump-of-grillo-cricket/embed/#?secret=rbyKeNVZDR" width="600" height="338" title="“The jump of “Grillo” (cricket)” — A.I.D.A. - Associazione Italiana di Aerofilatelia" data-secret="rbyKeNVZDR" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript"> /* <![CDATA[ */ /*! 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.aida-aerofilatelia.org/wp-includes/js/wp-embed.min.js /* ]]> */ </script> https://www.aida-aerofilatelia.org/wp-content/uploads/2021/05/GRILLO.jpg1117874Umberto Cavallaro Although eminent Italian scientists such as Gen. Crocco and Riccardo Corelli had done in-depth studies on innovative fuels since the mid-thirties, interest in Italy never went beyond combustion chamber tests and no rocket was produced in our country in those years. Until the end of the 1950s, Italy had essentially been watching. AllContinue reading