Flight, September 1921
SOARING FLIGHT IN GERMANY
The Rhon Competition
The Munich monoplane on which Koller did such good work would appear to be the essence of simplicity. There are three necessary elements in a glider: the wing, the tail,
and the pilot's seat. In the Munich these three are of the simplest possible form and are connected by a few struts giving perfect triangulation. A feature of the machine is that there is no elevator. The tail consists of a fixed tail plane and a rudder. The wings have their entire trailing edge hinged, a side-to-side movement of the control stick giving a differential movement to the two halves of the trailing edge for aileron control, while a fore and aft movement pulls down or elevates the entire trailing edge, thus causing it to perform the function of an elevator. The system appears to have worked well, and altogether this glider is very taking in its almost crudely elementary simplicity.