In the 100 years since the Wright brothers made their historic flight at Kitty Hawk, there has been a fantastic evolution of the science of aeronautical engineering. And this tradition continues to this day. Before this rudder can be used in flight, it must be rigorously tested under actual flight conditions in a high velocity wind tunnel. Just after this picture was taken, I inadvertently turned the rudder to the left and was forcibly thrown against the opposite wall. This thing really works!! The X-rays were negative. (The fuel used in this experiment is contained in the brown can in the foreground).