Easy to fly, comfortable, handy, agile – with outstanding performance: The Duo-Discus XL is the perfect device for enjoying flights together, whether in syndicates, in the family or in daily gliding club operation.
The room in the cockpit, which is already 10 cm longer than that of the Duo Discus X, was further increased by extending the rear seat backwards.
The control levers are placed according to ergonomic criteria and customers requests, and were arranged in optimal position with functional design.
The redesigned cockpit now also accommodates pilots taller than 2 meters in size. Efficient adjustments for backrests and rudder pedals also increase the seat comfort for smaller pilots.
It is now permitted to fly from the back seat without any operational restrictions, which further extends the spectrum of usage.
The front instrument panel can now be tilted upwards, which getting in and out of the glider more comfortable and eases an emergency exit. The backwards extended canopy improves the view for the pilot in the rear seat and is another gain of safety in flying.
With extension of the airbrakes, a trailing edge flap extends downwards simultaneously, compensating the loss of aerodynamic lift when the airbrakes are extended, so the lift coefficient remains practically unchanged. At the same time, the total drag of the aircraft is increased, which allows for a steeper approach angle and, even more important, for a slower landing speed with extended airbrakes and trailing edge flaps.
The extended trailing edge flaps increase the longitudinal pitch which results in even better visibility to the landing point.
As the trailing edge flaps and airbrakes are mechanically coupled, the trailing edge flaps react opposite to the airbrakes upon extension. An unlocked airbrake can therefore not extend itself, which prevents the situation of taking off with extended airbrakes unintentionally.
As there is no extra lever needed to operate the trailing edge flaps – they work in unison with the air brakes – there is no additional work load for the pilot.
The improved effectiveness of the airbrake system (the airbrakes moved 4 cm to the leding edge and are now 15 mm higher) makes it now possible to approve the Duo Discus XL for simple aerobatics including spinning.