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ASK 13
Schleicher ASK13.jpg
Role Sailplane
National origin Germany
Manufacturer Schleicher
Designer Rudolf Kaiser
First flight July 1966
Number built 700+

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.

Design and development[edit]

In 1965 Rudolf Kaiser continued development of the two-seat Ka 2 and Schleicher Ka 7 by introducing the ASK 13, using a mixture of materials including metal, wood and glassfibre. It has swept-forward single-spar wings, positioned lower than in the Ka 7, which allows for a large blown canopy providing a good all-round view for both pilots.

The 6 degree forward sweep of the wing allows the rear pilot to be seated near the centres of gravity and lift. The glider therefore maintains the same trim whether flown single seated or dual seated. 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.

Landing gear consists of a non-retractable sprung wheel, mounted aft of the centre of gravity. Originally there was a skid under the forward fuselage but many K13s now have a nose wheel. But a nose skid can still be seen on most k13s

It first flew in prototype form in July 1966 and by January 1978 a total of approximately 700 ASK 13s had been built by Schleicher. They are superb training gliders because they stall and spin well but these manoeuvres are easy to recover from. Their construction also gives them great strength and yet they are easily repairable.

The aircraft was succeeded by the ASK 21.


1979-built ASK 13
Schleicher ASK 13.jpg

Data from Flight manual

General characteristics

  • Crew: 2
  • Length: 8.18 m (26 ft 10 in)
  • Wingspan: 16 m (52 ft 6 in)
  • Height: 1.6 m (5 ft 3 in)
  • Wing area: 17.5 m2 (188 sq ft)
  • Aspect ratio: 14.6:1
  • Airfoil: Gö 535/Gö 549
  • Empty weight: 295 kg (650 lb)
  • Max takeoff weight: 480 kg (1,058 lb)


  • Stall speed: 57 km/h (35 mph; 31 kn)
  • Never exceed speed: 200 km/h (124 mph; 108 kn) in smooth air
140 km/h (76 kn) in rough air
140 km/h (76 kn) on aero-tow
100 km/h (54 kn) on winch launch
  • g limits: +4.0 -2.0 at 140 km/h (76 kn)
  • Maximum glide ratio: 27 at 85 km/h (46 kn)
  • Rate of sink: 0.80 m/s (157 ft/min) at 68 km/h (37 kn)
  • Wing loading: 27.7 kg/m2 (5.7 lb/sq ft)

See also[edit]

Aircraft of comparable role, configuration and era
Related lists


Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Schleicher_ASK_13 — Please support Wikipedia.
This page uses Creative Commons Licensed content from Wikipedia. A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia.

3 news items


Tue, 06 Oct 2015 17:22:30 -0700

So zeigte Jugendleiter Peter Martin Schmitt den Segler „Schleicher ASK 13“ mit einer Spannweite von 5,99 Meter, er wurde vom gelben Doppeldecker „Boeing Stearman“ von Hubertus Kretschmar per Schlepp auf Höhe gebracht. Mit einer Geschwindigkeit ...


Wed, 05 Aug 2015 20:00:00 -0700

Die 15-jährige Schülerin Christina Juhl aus Uphusum probierte in dem doppelsitzigen Segelflugzeug „Schleicher ASK 13“. Dabei hatte der hinter ihr sitzende Fluglehrer Wilhelm Merzeních alles unter Kontrolle. Die Einführung in das Segelfliegen wird für ...
Sat, 23 Aug 2008 00:00:00 -0700

Soon, I was trusting myself into the hands of these jokesters from the Northwest Soaring Club as they opened the domed hatch (a la the Jetson's) and helped me into the snug back seat of the German-made Schleicher ASK-13, a tiny vessel big enough for ...

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