The ASK21 is a two-seater midwing with 17m span. The Glider stands out particularly by its wide range of flying tasks as it accompanies the student pilot from instruction up to the first cross-country or competition flights.
The experienced pilot may use its suitability for aerobatics and cloud flying. Its easy handling on the ground as well as in flight must also be pointed out.

The ASK21 is a design by Rudolf Kaiser one of the most famous sailplane designers of our times.

Design Specification:
Two-seater sailplane, fiber composite consruction, midwing configuration with T-tail.

Fuselage - GRP tubuscore honeycomb sandwich fuselage with roomy safety cockpit. In flight adjustable rudder pedals, front & rear. TOST C.G. tow release coupling and TOST aero nose tow release coupling.
Rubber-shock-mounted landing gear with large 5.00-5 tire. Hydraulic disc brake which is connect to the airbrake lever. Fixed nose wheel 4.00-4. Rubber-shock-mounted tail skid or tail weel 210 x 65. Cockpit ventilation through adjustable fresh air nozzles at the right cockpit wall.

Canopies and Instrument Panels - The full-vision plexiglass canopies are hinged fore and aft. Canopy interlock mechanisim to guarantee safe locking of the rear canopy. The front instrument panle is made to hinge upwards with the canopy; even when the canopy is open, the instruments are still covered.

Wing - The two-part double-tapered wing is built as a fiberglass sandwich with PVC hard foam core and GRP roving wing spars. Large dive brakes on the wing upper surface. Straight-forward wing assembly by conventional tongue and fork spar extension with two cylindrical main pins.

Control Circuits and Fittings - Aileron, elevator, and airbrakes are actuated by push rods running in anti-noise ball-bearings. The actuating levers and ballcranks use also ball bearings. The rudder is actuated by steel cables. Levers and fittings are welded steel or milled Duraluminium respectively.

TailPlane - T-tail (elevator with stabilizer) in GRP-hard foam sandwich-construction. Control surface partly mass balanced. Low actuating hand forces. Elevator trim via a trim lever next to the stick. Automatic elevator connection. VHF-antenna in the fin.

Board Equipment and Accessories - Pitot in the fuselage nose. Static pressure vents (for the A.S.I.) in the fuselage tail boom left and right. Connector for the Total Energy tube on the fuselage top. VHF-antenna in the fin. Seat cushions front & rear. 5-part safety harnesses.

Tecnical Data:
Span 17 m (55.77 ft)
Wing Area 17.95 m2 (193.21 sqft)
Wing Aspect Ration 16.1
Maximum Load Factor (180 km/h) +6.5 -4.0
Maximum Load Factor +5.3 -3.0
Empty mass with min. equipment appr. 360 kg (~794 lbs)
Max. take-off mass 600 kg (1323 lbs)
Wing loading (85 kg payload) 24.5 kg/m2 (5.01 lbs/sgft)
Wing loading (200 kg payload) 31.0 kg/m2 (6.34 lbs/sqft)
Max. speed 280 km/h (151 kts)
Min. speed (single-seat) 62 km/h (33.4 kts)
Min. speed (two-seated) 65 km/h (35 kts)
Minimum sink (single-seated) 0.65 m/s 128 ft/min)
Glide ratio (single-seated, at 85 km/h) 34
Glide ratio (two-seated, at 90 km/h) 34

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Above info extracted from the website .... www.alexander-schleicher.de
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I hope you all liked it ...

do we have it at RGC ,or we are using same old birds