[2] The Geheimrat was a wood-framed aircraft with a rectangular cross section, flat sided, plywood covered fuselage.
In plan it tapered only slightly but the depth decreased rapidly towards the tail, making the fuselage behind the wing strongly wedge shaped.
The wing was mounted on two extensions at the highest point, with an open, unscreened cockpit below its leading edge behind a more rounded nose.
It gained second place in the sink rate section, though overall a contemporary observer judged the earlier Darmstadt D-4 Edith, a braced monoplane, more successful.
[2][3] Having seen the Akaflieg Hannover Vampyr slope soaring for up to three hours, the Darmstadt students were soon making similar long flights in both their aircraft.