X-Plane 11.50+ Sukhoi Su-27 1.0. The Sukhoi Su-27 is a Soviet-origin twin-engine supermanoeuvrable fighter aircraft designed by Sukhoi. It was intended as a direct competitor for the large United States fourth-generation fighters such as the Grumman F-14 Tomcat and F-15 Eagle. This excellent old aircraft by SRX7775 (2012) and before him by Barry Leger, has been updated so as to fly in X-Plane 11. Thanks to SRX7775 for permission. For my part, I have made the canopy appear, moved the weapons into position, and fixed the glass so that it doesn't show the ground when flying through clouds. In the future I might add a 3D cockpit and maybe some new paints. For now, enjoy the ability to turn on a sixpence and really throw this aircraft around. You could even engage in a bit of aerial combat! By Alan Ashforth.