Schleicher ASW 22

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ASW 22
Role Open-class sailplane
National origin Germany
Manufacturer Schleicher
Designer Gerhard Waibel
First flight 8 July 1981
Number built 87

The ASW 22 is an Open Class glider built of modern fibre reinforced composites including carbon-fibre and Kevlar.

The manufacturer of the ASW 22 is Alexander Schleicher GmbH & Co. The 'W' indicates that this is a product of the German designer Gerhard Waibel.

The ASW 22 Open Class is a successor to the ASW 17. It first flew in 8 July 1981 as a 22 metre glider. The span was increased to 25 metres for the ASW 22B with a modified inner wing section and flaperons similar to the ASW-20. It uses a Horstmann and Quast wing profile on the inner section with underwing tubes to collect high-pressure air which is then expelled through turbulator holes in the bottom wing skin ahead of the flap and aileron hinge line to prevent the separation of the laminar flow. The ASW-22 has a two-wheel retractable undercarriage, and is the only sailplane in the world to have this.

Competition performances[edit]

An ASW 22 broke the world 750 km speed triangle record in 1985, and other ASW 22s have won first place in six World Gliding Championships.

Variants[edit]

ASW 22
Open Class high-performance sailplane; 22 or 24 metre span
ASW 22M
First motorised version with 22/24 m span, Rotax 505A engine
AS 22-2
The prototype of the ASH 25, which combined the wing of the ASW 22 with a two seat fuselage[1]
ASW 22B
Span increased to 25 m
ASW 22BL
Fitted with 26.4 m tips
ASW 22BE, BLE
self-launching versions with 49 hp Rotax 505A engine
ASW 22BLE 50R
self-launching version with 50 hp rotary engine


Specifications (ASW 22BL)[edit]

Data from Jane's All the World's Aircraft 1988-89[2]

General characteristics

  • Crew: 1
  • Length: 8.1 m (26 ft 7 in)
  • Wingspan: 26.58 m (87 ft 2 in)
  • Height: 1.66 m (5 ft 5 in)
  • Wing area: 16.7 m2 (180 sq ft)
  • Aspect ratio: 38.3
  • Airfoil: root:DFVLR HQ17-14.28; tip:Delft university DU84-132
  • Empty weight: 465 kg (1,025 lb)
  • Max takeoff weight: 1,023 kg (2,255 lb)
  • Water ballast: 235 l (62 US gal; 52 imp gal)

Performance

  • Stall speed: 65 km/h (40 mph; 35 kn)
  • Never exceed speed: 280 km/h (174 mph; 151 kn)
  • g limits: +5.3 -2.65
  • Maximum glide ratio: 62 at 95 km/h (51 kn; 59 mph)
  • Rate of sink: 0.41 m/s (81 ft/min) at 67 km/h (36 kn; 42 mph)
  • Wing loading: 33.4 kg/m2 (6.8 lb/sq ft)

See also[edit]

Aircraft of comparable role, configuration and era

Schempp-Hirth Nimbus 4

Related lists

References[edit]

  1. ^ "Specification ASH 25 / ASH 25 Mi" (PDF). Alexander Schleicher GmbH & Co. Segelflugzeugbau. July 2003. p. 2. Retrieved 1 February 2015. The ASH 25, being the series production version of the AS 22-2 
  2. ^ John W.R. Taylor, ed. (1988). Jane's All the World's Aircraft 1988-89. London: Jane's Information Group. p. 630. ISBN 0-7106-0867-5. 

Further reading[edit]

  • "Specification ASW 22 BL / BLE (english)" (PDF). Alexander Schleicher GmbH & Co. Segelflugzeugbau. July 2003. Retrieved 4 August 2014. 
  • Milgram, Fred Thomas; Judah; translator; contributor (1999). Fundamentals of sailplane design (3rd ed ed.). College Park, MD: College Park Press. ISBN 978-0966955309. 
  • Simons, Martin (2005). Sailplanes 1965-2000 (2nd revised ed.). Königswinter: EQIP Werbung und Verlag G.m.b.H. ISBN 978-3-9808838-1-8. 

External links[edit]