Joint Fun instead of Joint Outlanding.
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 Turbo sustainer system proven for decades adds the certainty to do without risky outlandings and long retrieval trips. When you are running out of lift, you can rely on your Turbo.
As long as you don't need the sustainer engine you'll forget that you have it. If you need it, however, there is hardly a more reliable engine concept than the turbo system that was introduced more than twenty years ago and has been continuously improved.
Reliable and Simple Activation
If thermal conditions let you down, you simply activate a switch to automatically extract the 22 kW SOLO two-stroke engine by an electrical spindle drive supported by a gas spring. The engine can be easily started using the windmill effect - you just pull and then let go of the decompression handle as instructed in the display of the engine control unit.
The noise-optimized multi-blade foldable propeller runs at full power, eliminating the need for a starter, choke or throttle.
When done, just switch it off.
Once you have reached the desired altitude, the engine gets stopped and retracted by a simple click.
Backseat drivers supported.
The optional second engine control unit supports operating the engine from the back seat as well as from the front seat. With this option installed, the back seat can be declared as the seat of the responsible pilot, allowing you to fly guests seated in the front seat.
Comfort releases Performance.
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 4cm to the leding edge and are now 18mm higher) makes it now possible to approve the Duo Discus XL for simple aerobatics including spinning.
|Wing span||20 m||65.62 ft|
|Wing area||16.40 m²||176.53 ft²|
|Fuselage length||8.73 m||28.64 ft|
|Empty mass (approx.)||490 kg||1080 lb|
|Max. all-up mass||750 kg||1654 lb|
|Wing loading (approx.)||34.1 - 45.7 kg/m²||7.0 - 9.3 lb/ft²|
|Max. permitted speed||262 km/h||142 kts (163 mph)|
|Engine type||Solo 2350 D||Solo 2350 D|
|Power||22 kW / 30 PS||30 hp|
|Propeller||asymmetrical foldable 5-blade-propeller||asymmetrical foldable 5-blade-propeller|
|Tank capacity||16.2 liter||4.28 US Gal. / 3.56 IMP Gal.|
Standard Equipment and Options
In case of top-heaviness, the tail tank can be filled with water to improve the flight quality.
For single seaters, only compatible with 18m wing span. Especially for self-launching sailplanes, the wing tip wheels ease the starting.
Avoids cracking due to low temperatures as well as yellowing of the surface
Attention: Fluorierend paint is not permanently UV resistent and may fade over time
Attention: Flourecend paint is not permanently UV resistent and may bleach out over time.