Glasflügel 303

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Glasflügel 303 hl D-7489.jpg
Role 15 metre class sailplane
National origin Germany
Manufacturer Glasflügel
First flight 1976
Number built 202

The Glasflügel 303 Mosquito is a composite 15 metre Class single-seat sailplane manufactured by Glasflügel between 1976 and 1980.

Design and development[edit]

Designed for the 15 metre racing class, the Mosquito married the Standard Class Hornet fuselage with a flapped wing employing the then widely-used FX 67-K-170 airfoil developed at the University of Stuttgart by Professor Franz Wortmann. The Mosquito had a new design of one-piece canopy rather than the two-piece canopy used on the Hornet.

This profile and its sister profile FX 67-K-150 are among the most prolific in the history of gliding, as they were employed also in the Nimbus-2, Mini-Nimbus, DG-200 and DG-400, PIK-20, Kestrel, Mosquito, Vega, Jantar and LAK-12 among other types.

The 303 wing featured innovative interconnected trailing edge dive brakes-variable camber flaps. The glider had automatic connection for all controls: ailerons, elevator, air brakes and water ballast. The Mosquito also uses a pneumatic tail wheel rather than a skid. It was available with a tow release in both the nose and near the centre of gravity; in-flight adjustable rudder pedals and seat back. A lever bar to aid in assembly was also employed. A larger than common retractable main wheel with drum brake is also a nice feature, however the brake lever located in the seat pan behind the joy stick is slightly inconvenient.[1]

The maiden flight of the Mosquito took place in 1976. It is by all accounts a nice-handling, comfortable and pleasing aircraft, but a little less performing than the contemporaneous Rolladen-Schneider LS3 and ASW 20. Therefore, the Mosquito (and the Schempp-Hirth Mini-Nimbus that shares the same wing) did not do well in top-level competition, neither did it find the large commercial success of the Libelle. The Mosquito was superseded in 1980 by the Glasflügel 304.

Aircraft on display[edit]


General characteristics

  • Crew: One pilot
  • Capacity: 125 kg (275 lb) water ballast
  • Length: 6.40 m (21 ft 0 in)
  • Wingspan: 15.00 m (49 ft 3 in)
  • Height: 1.40 m (4 ft 7 in)
  • Wing area: 9.86 m2 (106 sq ft)
  • Aspect ratio: 22.8
  • Empty weight: 242 kg (532 lb)
  • Gross weight: 450 kg (990 lb)


  • Maximum speed: 250 km/h (160 mph, 140 kn)
  • Maximum glide ratio: 39
  • Rate of sink: 0.50 m/s (100 ft/min)

See also[edit]

Aircraft of comparable role, configuration, and era

Related lists



  1. ^ Glasflugel Mosquito Serial #70 manual
  2. ^ US Southwest Soaring Museum (2010). "Sailplanes, Hang Gliders & Motor Gliders". Retrieved 26 May 2011.


  • Thomas F, Fundamentals of Sailplane Design, College Park Press, 1999
  • Simons M, Segelflugzeuge 1965-2000, Eqip, 2004

Glasflugel Mosquito serial number 70 flight manual

External links[edit]