Schleicher ASK 13 |  |
The ASK 13 is a two-seater glider that was built by Alexander Schleicher. . It was and still is widely used for ab-initio training of glider pilots.
In 1965 Rudolf Kaiser continued development of the two-seated Ka 2 and Schleicher Ka 7 by introducing the ASK 13. It uses a mixture of materials, including metal, wood and glassfibre. It has swept-forward single-spar wings were positioned lower than in the Ka 7 which allowed for a large blown canopy and so a good all-round view for both pilots.
The 6° forward sweep of the wing allows the rear pilot to be seated near the centres of gravity and lift. The glider therefore behaves in the same way when it is flown dual and solo. The D-type leading edge torsion box is of plywood and the whole wing is fabric-covered. There are metal Schempp-Hirth air brakes above and below the wing, and the wooden ailerons are fabric-covered. The fuselage is a welded steel tube structure with spruce stringers and fabric-covered overall, except for the nose, which is glassfibre. The tail unit is plywood-covered, except for the rear part of the rudder and elevators, which are fabric-covered, and there is a Flettner trim tab in the starboard elevator.
General characteristics
- Crew: Two
- Length: 8.18 m (26 ft 10 in)
- Wingspan: 16.00 m (52 ft 6 in)
- Height: 1.6 m (5 ft 3 in)
- Wing area: 17.5 m² (188 ft²)
- Aspect ratio: 14.6
- Wing profile: Göttingen 535/549
- Empty weight: 290 kg (640 lb)
- Gross weight: 480 kg (1,060 lb)
Performance
- Maximum speed: 200 km/h (125 mph)
- Maximum glide ratio: 28
- Rate of sink: 0.81 m/s (160 ft/min)
