Photo: Christoph Schwarz

Photo: Christoph Schwarz

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.

Fly safer. 

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.

Safer Landings.

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.

Technical Data

metric imperial
Wing span 20 m 65.62 ft
Wing area 16.40 m² 176.53 ft²
Aspect ratio 24.4 24.4
Fuselage length 8.73 m 28.64 ft
Empty mass (approx.) 480 kg 1058 lb
Max. all-up mass 750 kg 1654 lb
Wing loading (approx.) 33.8 - 45.7 kg/m² 6.9 - 9.3 lb/ft²
Max. permitted speed 262 km/h 142 kts (163 mph)
metric imperial
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.

Downloads

Standard Equipment and Options

Maughmer Winglets
Wings and fuselage build from Carbon Fibre Composite
Safety cockpit built from Carbon/Kevlar composite more…
Triple panel dive brakes
Shock-absorbing retractable main undercarriage with hydraulic disc brake more…
Nose release
Nose wheel (replaceable)
Additional nose skid to replace the nose wheel | optional / upgradeable
Automatic control hook-ups
Battery holder for 2 batteries 12 V / 9 ah in front of the rear seat | upgradeable
Battery holder in the fin
Tail tank | optional more…

In case of top-heaviness, the tail tank can be filled with water to improve the flight quality. 

Central charging connector under the rear instrument panel more…
Battery 18 Ah to extend and retract the Turbo system more…
Canopy cover
2 wingtip wheels instead of skids | optional / upgradeable more…

Only compatible with the 18m wing. Especially for self-launching sailplanes, the wing tip wheels ease the starting.

Additional C/G release hook | optional / upgradeable
Oxygen cylinder mount | optional / upgradeable more…
Air filled tail wheel (200x50) | optional / upgradeable
Control gap seals, additional teflon sealing on ailerons and flaps | optional / upgradeable
Seat pan and cockpit floor visibly laminated in Carbon/Kevlar Composite more…
Cockpit sides in spotted paint
Tilt-up front seat instrument panel more…
Main undercarriage operable from either seat independently
Front seat adjustable seat back with integrated headrest more…
Adjustable back seat head rest more…
Adjustable rudder pedals in both seats
Schroth oder Gadringer safety harnesses with rotary buckles
Adjustable ventilation outlets on the side panel for each seat
Additional ventilation air scoop in the side windows more…
Seat cushions for front and back seat with shock absorbing foam more…
Cockpit sides upholstered and with pockets more…
Combination pouch for aircraft books and main pin more…
Blue tinted canopy | optional / upgradeable
Cockpit interior in Competition design | optional / upgradeable
Cockpit interior in leather | optional / upgradeable more…
Additional seat cushion for short pilots | optional / upgradeable
Finish in T 35 (Vorgelat)
Finish with Polyurethane Arcyl paint | optional more…

Avoids cracking due to low temperatures as well as yellowing of the surface

Registration number painted
Competition letters as vinyl stickers | optional / upgradeable
Competition letters painted | optional / upgradeable
Competition letters painted, clear coated and sanded smooth | optional / upgradeable
Layout for shading or special script | optional / upgradeable more…

Attention: Fluorierend paint is not permanently UV resistent and may fade over time

Anti-collision markings SHK design | optional / upgradeable
Double-layer anti-collision markings in fluorierend red RAL 3023 SHK standard design | optional / upgradeable
Layout for special designs with masking | optional / upgradeable more…

Attention: Flourecend paint is not permanently UV resistent and may bleach out over time.

Flarm antenna Dolba BD12 | optional / upgradeable
Receptacle in the fin for TE, statid/TE or triple sensor | upgradeable more…

R

Installation preparation for transponder antenna type Dolba in the fin
Electronic turbo engine control unit with automatic extension and retraction, for front seat
Tail dolly | optional / upgradeable more…
Tow bar, foldable | optional / upgradeable more…
Wing wheel system Sifi | optional / upgradeable
Tow bar with tail lifting arm, system Cobra | optional / upgradeable more…

Further Duo Discus Models:


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.