The people behind the Smartflyer, a Swiss design concept now under development ask, “Why does the Smartflyer look like this? With a tail-mounted electric motor, it’s a bit reminiscent of e-Genius, and also a bit like a strutless Rutan Skigull. In fact, the basic configuration has been used on many significant aircraft over the last several decades, as a segment of Smartflyer’s web site shows. As Herr Professor Dipl-Ing. Rudolf Voit-Nitschmann, Project Leader on e-Genius explained, several benefits accrue from this arrangement of aerodynamic elements. Compared to a conventional touring motor glider a substantial larger propeller-diameter can be realized without a high and consequentially heavier undercarriage. Therefore the propeller-efficiency will increase. The front body part has the aerodynamic quality of a modern glider (no vorticities and local impact pressure peaks) and thus a very small drag. The propeller is optimally protected from ground contact. Electric motors are light enough to mount on a tail and are therefore able to benefit from that placement while …