Improving 1920s aircraft design... Full Video: https://buff.ly/3QGg9el Another unique design feature of this as they advanced in their construction, was the addition of windshields. Prior to that, you had to wear goggles, leather helmet. They still would with these airplanes, but this just relieved you from having to have the pressure of a goggle on your face the whole time. Another advancement was the streamlining of the rudder. You can see, this rudder is no longer that bulbous elephant ear sh