Scheibe Tandem-Falke

The Scheibe SF 28, better known by the nickname " Tandem - Falke " is a two-seater, made ​​of mixed fiber motor glider, which was developed by the disk -Flugzeugbau GmbH in 1971 from the Mountain Hawks IV.

Construction

The tandem two-seater Hawk is constructed as, cantilever low- wing monoplane with central unsprung wheel chassis with training wheels. From the tandem seating arrangement, the advantage of better aerodynamics revealed. The seats in tandem here, allowing a slimmer fuselage and thus better flight performance.

The motor glider is designed purely as a self starter and winch launch and aerotow are not allowed. The powerplant is a Limbach SL 1700 EA came here I used. To optimize the gliding behavior with the engine, the propeller can be placed in a dedicated feathering. Thus, a maximum glide ratio of about 26-27 is achieved. When using a three-position propeller ( takeoff, cruise flight, gliders ) a significantly higher travel speed is obtained than with the SF 25

The original maximum weight of 590 kg was increased in 1976 to 610 kg after optional publication of Technical Bulletin 770-2/76.

Use

Aside from using the tandem glider Hawk is also suitable for travel flights. Pictured here is the SF28 of Flying low mountain eV in Fayence ( Var). The falcon was flown in a day from Segelfluggelände Meier mountain near Dusseldorf to Provence, with another copy of the D- KOAP the German Alps - gliding school Unterwoessen a trip to the North Cape was undertaken.

Main features of the tandem Falcons are the simple and sturdy composite construction as well as the good-natured flight behavior. He was in Germany but always in the shadow of the popular SF 25 with side-by -side seating arrangement. A majority of the 120 copies produced were sold abroad. The SF 25 E had finally even better glide performance due to the higher range of 18 meters.

Specifications

Limbach SL 1700 EA, 44 kW / 60 hp