1.0SADARS: Shefford and District Amateur Radio Societyhttps://sadars.co.uk/wprich600338<blockquote class="wp-embedded-content" data-secret="hEgGTKy7aV"><a href="https://sadars.co.uk/wp/archives/948">21 May 2015 – Development of VTOL Craft</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://sadars.co.uk/wp/archives/948/embed#?secret=hEgGTKy7aV" width="600" height="338" title="“21 May 2015 – Development of VTOL Craft” — SADARS: Shefford and District Amateur Radio Society" data-secret="hEgGTKy7aV" 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://sadars.co.uk/wp/wp-includes/js/wp-embed.min.js </script> The speaker for the evening was Alan Merriman who spoke of the development of Vertical Take Off and Landing aircraft from the flying bedstead through to the operational Harriers Covered was engine development where the thrust to weight ratio became the idea for vertical lift.  The RAF became interested because of the fear that runways … Continue reading →http://sadars.co.uk/wp/wp-content/uploads/2015/05/The-Harrier.jpg