LAK-9

LAK-9 Lietuva
Role	Open-class sailplane
National origin	Soviet Union
Manufacturer	LAK
Designer	Kęstutis Gečas
First flight	1976

The LAK-9 Lietuva (English: Lithuania) was an open-class competition sailplane produced in the Soviet Union in the 1970s. It was based on the LAK BK-7 that had been produced in small numbers since 1972. Like it, the LAK-9 was a conventional sailplane design with a high-set cantilever wing and a conventional empennage. The landing gear consisted of a retractable monowheel and a tailwheel, and construction throughout was of fibreglass.

The type came to the attention of the West when a LAK-9 was flown in the 1976 Gliding World Championships in Finland, the first entry by the Soviet Union since 1968. Piloted by O. Pasetnik, it was withdrawn from competition due to aileron damage.

The fourth batch to be produced was designated the LAK-9M (for "Modernised"), and a motorglider version was also produced.

Specifications (LAK-9)

General characteristics

• Crew: One, pilot
• Capacity: 100 kg (220 lb) water ballast
• Length: 7.27 m (23 ft 11 in)
• Wingspan: 20.02 m (65 ft 8 in)
• Height: 1.53 m (5 ft 1 in)
• Wing area: 15.0 m² (161 ft²)
• Aspect ratio: 26.8
• Wing profile: Wortmann FX-67-K-170
• Empty weight: 380 kg (838 lb)
• Gross weight: 580 kg (1,278 lb)

Performance

• Maximum speed: 225 km/h (140 mph)
• Maximum glide ratio: 48
• Rate of sink: 0.51 m/s (100 ft/min)

See also

Aircraft of comparable role, configuration and era

• Schempp-Hirth Nimbus-2
• Schleicher ASW 17

Related lists

• List of gliders

External links

• About LAK-9 in www.lizdas.lt (lithuanian lang.