Schleicher ASW 15

Last updated
ASW 15
ASW15-in-schon (cropped).jpg
General information
TypeSailplane
National originGermany
Manufacturer Schleicher
Designer
StatusMost still active with private users and few clubs.
Number builtca.453
History
First flightca. 1968

The Schleicher ASW 15 is a single-seat sailplane designed in 1968 by Gerhard Waibel and manufactured by Alexander Schleicher GmbH & Co. The ASW 15 has shoulder-mounted wings and an all-flying tailplane, with its single tow-release placement a compromise between winching and aerotowing. The later ASW 15B had several improvements, including a tow-release placed on the plane of symmetry, an 11 cm taller rudder, a slightly larger main wheel, and the provision of a 90-litre water ballast system.

Contents

Rot due to fungus infestation was found in an early example, leading to an Airworthiness Directive. Starting with serial number 356, balsa wood was abandoned in the construction in favour of synthetic foam.

In 1971 and 1972, the American pilot Karl Striedieck set world out-and-return distance soaring records three times flying an ASW 15, including one flight of 1,009.854 kilometres (627.494 mi) on October 15, 1972.

It was succeeded by the Schleicher ASW 19.

Variants

ASW 15
Original production version incorporating balsa / fibre-glass sandwich wing construction. Built to pre 1970 Standard class rules the ASW 15 had non-retracting recessed mainwheel and no provision for water ballast; 183 built. [1] [2]
ASW 15B
Second production version with glass-fibre / foam construction, retractable mainwheel and 90 kg (200 lb) water ballast tanks; 270 built. [3] [2]
ASW 15M
One ASW 15 converted to a motor-glider powered by a 300 cc (18 cu in)22 kW (30 hp) Wankel KM-27 rotary engine, with a 20 L (5.3 US gal; 4.4 imp gal) fuel tank at an empty equipped weight of 288 kg (635 lb) [4]

Aircraft on display

Specifications (ASW 15B)

Data from Jane's all the World's Aircraft 1976–77 [3]

General characteristics

Performance

+8.4 -5.4 (ultimate load factor with ballast)
+9.2 -6.2 (ultimate load factor without ballast)
37.1 kg/m2 (7.6 lb/sq ft) with water ballast

See also

Aircraft of comparable role, configuration, and era

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References

  1. ↑ Taylor, John W.R., ed. (1972). Jane's all the World's Aircraft 1972–73. London: Sampson Low, Marston & Co. Ltd. p. 526. ISBN   0-354-00109-4.
  2. 1 2 Simons, Martin (2005). Sailplanes 1965–2000 (2nd revised ed.). Königswinter: EQIP Werbung und Verlag G.m.b.H. pp. 65–66. ISBN   978-3-9808838-1-8.
  3. 1 2 Taylor, John W.R., ed. (1976). Jane's all the World's Aircraft 1976–77. London: Jane's Yearbooks. pp. 568–569. ISBN   0-3540-0538-3.
  4. ↑ Taylor, John W.R., ed. (1976). Jane's all the World's Aircraft 1976–77. London: Jane's Yearbooks. p. 569. ISBN   0-3540-0538-3.
  5. ↑ US Southwest Soaring Museum (2010). "Sailplanes, Hang Gliders & Motor Gliders" . Retrieved 26 May 2011.

Further reading

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