The Rumpler Monoplane.
In this, as in all the Taube flying machines, the wings are in the shape of a dove or pigeon. The end of the wings are flexible. The stability of the apparatus is assured both by the shape of the wings and their flexibility. It is at once a combination of the inherent stability type and that depending on the warping of surfaces; the advisability of blending the principles is one practice alone can decide. In some of the Rumpler monoplanes, instead of the ends of the wings being flexible, there are “ailerons” attached.