Canard Avanti—the “refined” mallard

The most striking feature is the relatively short, flat hull, which has a slender triangular cross-section extending roughly to the center of gravity and a rectangular cross-section at the rear of the hull. The forward side surface, which in the “Wild Duck” model was still designed as a separate nose fin, is incorporated into the forward section of the fuselage here. At 1,150 mm in length, the fuselage is kept relatively short so that it can fit undivided into a smaller transport case.

The control system is designed as a full tail control system with a fork reduction gear. The tail weight serves to balance the nose weight, which results from the increased fuselage cross-section and the robust nose tail unit.

The main wing itself has a higher aspect ratio than that of the predecessor model, the “Wild Duck,” and the wing bends are located behind the tips of the tailplane, so that the wing tip vortices of the leading edge, so to speak, fall into the bend, as tests with longer wool threads during “starved” flight indicated.

The main wing profile is slightly more cambered aft than on the “Wild Duck,” and the nose is also slightly more sharply bent. As a result, the center of gravity could be moved slightly further aft than on the predecessor model, and the EWD could even be reduced slightly.

The leading-edge wing profile was originally a “curved plate.” The underside was then filled in the first half, as with the “Wild Duck,” in the style of the Jedelsky standard profile. The EWD could then be reduced even further.

Initially, a 3-D turbulator made of 0.6 mm cardboard was used for the nose tail unit. This was later replaced by a pre-tensioned turbulence cord of approximately the same thickness.

Naturally, the flight performance of the “Canard Avanti” model is better than that of the “Wild Duck.”

Once trimmed for longitudinal stability, the model can be flown without any controls at all. This initial flight-testing phase should be carried out very thoroughly.

Please direct any inquiries or experience reports to:

Hans Gremmer, Oberbreitenauerstr. 11, D-8300 Landshut, Tel. 0871/7 36 31