Let LF-109 Pionyr

The LF -109 Pionýr is a glider designers to Vladimir Stros the Czech manufacturer LET.

It was planned as a two-seater training and had ( as a prototype XLF -109 ) in March 1950 its first flight. The aircraft was a simple and robust design of a stoffbespanntem steel tube fuselage and a guiding and supporting structure is made of wood with good flight characteristics. A total of about 470 units were built, which were produced in the Soviet Union further modified copies ( all-metal construction and as KAI.12 called ) under license.

Specifications

  • Length: 7.77 m
  • Wingspan: 13.47 m
  • Height: 1.64 m
  • Wing area: 20.20 m²
  • Aspect ratio: 9.03
  • Profile: NACA 43012
  • Empty weight: 235 kg
  • Max. Take off weight: 440 kg
  • Maximum speed: 120 km / h
  • Minimum speed: 52 km / h
  • Glide ratio: 18.5 at 80 km / h
  • Lowest sink: 1.0 m / s at 62 km / h

Swell

  • FLiEGERREVUE 5/2008, p.67
  • The datasheet at virtual aviation museum
  • Glider
Let Kunovice
509282
de