# Schleicher ASK 13 > Mediated Wiki article. Canonical URL: https://mediated.wiki/source/Schleicher_ASK_13 > Markdown URL: https://mediated.wiki/source/Schleicher_ASK_13.md > Source: https://en.wikipedia.org/wiki/Schleicher_ASK_13 > Source revision: 1338318648 > License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) German two-seat glider aircraft, 1966 This article needs more citations. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Schleicher ASK 13" – news · newspapers · books · scholar · JSTOR (January 2023) (Learn how and when to remove this message) ASK 13 General information Type Sailplane National origin Germany Manufacturer Schleicher Designer Rudolf Kaiser Number built 700+ History First flight July 1966 [Instrument panel](/source/Flight_instruments) of ASK 13 The **ASK 13** is a two-seater [glider](/source/Glider_(sailplane)) that was built by German sailplane manufacturer [Alexander Schleicher Gmbh & Co](/source/Alexander_Schleicher_GmbH_%26_Co). It was and still is widely used for basic training of [glider pilots](/source/Gliding). ## Design and development In 1965 [Rudolf Kaiser](/source/Rudolf_Kaiser) continued development of the two-seat Ka 2 and [Schleicher Ka 7](/source/Schleicher_Ka_7) by introducing the ASK 13, using a mixture of materials including metal, wood and [fibreglass](/source/Fiberglass). 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](/source/Forward-swept_wing) allows the rear pilot to be seated near the [centres of gravity](/source/Center_of_gravity_of_an_aircraft) and [lift](/source/Center_of_pressure_(fluid_mechanics)). The glider therefore maintains the same trim whether flown single seated or dual seated. The D-type leading edge torsion box is of [plywood](/source/Plywood) and the whole wing is [fabric](/source/Fabric)-covered. There are metal Schempp-Hirth air brakes above and below the wing, and the wooden [ailerons](/source/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 fibreglass. The tail unit is plywood-covered, except for the rear part of the rudder and elevators, which are fabric-covered, and there is a trim tab in the starboard elevator.[1] Landing gear consists of a non-retractable sprung wheel, mounted aft of the centre of gravity. The original design featured a skid under the nose and tail, although on many K13s these have been replaced with wheels to make handling on hard surfaces easier. 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](/source/Alexander_Schleicher_ASK_21). ## Specifications 1979-built ASK 13 Pull up of ASK 13 at *Degerfeld*[2] [airfield](/source/Aerodrome) (2016) *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](/source/Aspect_ratio_(aeronautics)):** 14.6:1 - **[Airfoil](/source/Airfoil):** Gö 535/Gö 549 - **Empty weight:** 295 kg (650 lb) - **Max takeoff weight:** 480 kg (1,058 lb) **Performance** - **Stall speed:** 57 km/h (35 mph, 31 kn) - **[Never exceed speed](/source/V_speeds#VNE):** 200 km/h (120 mph, 110 kn) in smooth air - - - - 140 km/h (76 kn) in rough air - 140 km/h (76 kn) on aero-tow - 120 km/h (65 kn) on winch launch (58kn with Tost black cable weak link) - **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 **Aircraft of comparable role, configuration, and era** - [PZL Bielsko SZD-9](/source/PZL_Bielsko_SZD-9) - [LET L-13 Blaník](/source/LET_L-13_Blan%C3%ADk) - [CVT M-200](/source/CVT_M-200) - [Scheibe Bergfalke](/source/Scheibe_Bergfalke) **Related lists** - [List of gliders](/source/List_of_gliders) ## References Wikimedia Commons has media related to [Schleicher ASK 13](https://commons.wikimedia.org/wiki/Category:Schleicher_ASK_13). 1. **[^](#cite_ref-1)** Alexander Schleicher GmbH. ["ASK 31 Flight Manual"](https://members.gliding.co.uk/wp-content/uploads/sites/3/2024/10/ASK13_Flight_Manual-1.pdf) (PDF). *gliding.co.uk*. Retrieved 2025-01-12. 1. **[^](#cite_ref-2)** See German Wikipedia [Flugplatz Albstadt-Degerfeld](https://de.wikipedia.org/wiki/Flugplatz_Albstadt-Degerfeld) - [Schleicher Web Site](https://www.alexander-schleicher.de/) - [Sailplane Directory](http://www.sailplanedirectory.com/) v t e Schleicher gliders Wooden construction pre-World War II Condor Hols der Teufel Poppenhausen Rhönadler Rhönbussard Wooden construction (Rudolf Kaiser) Ka 1 Rhönlaus Ka 2 Rhönschwalbe Ka 3 Ka 4 Rhönlerche II Ka 6 Rhönsegler K7 K7/13 K 8 Ka-9 K 10 ASK 13 ASK 14 ASK 16 ASK 18 GRP construction (Rudolf Kaiser) ASK 21 ASK 23 GRP construction (Gerhard Waibel) ASW 12 ASW 15 ASW 17 ASW 19 ASW 20 ASW 22 ASW 24 ASW 27 ASW 28 GRP construction (Martin Heide) ASH 25 ASH 26 ASH 30 ASH 31 GRP construction (Michael Greiner) ASG 29 ASG 32 GRP construction - unspecified designer AS 33 AS 34 AS 35 --- Adapted from the Wikipedia article [Schleicher ASK 13](https://en.wikipedia.org/wiki/Schleicher_ASK_13) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Schleicher_ASK_13?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.