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Fibera KK 1e Utu

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Wingspan  15 m
First flight  August 1964
Length  6.5 m
Fibera KK-1e Utu httpsuploadwikimediaorgwikipediacommonsthu

The Fibera KK-1e Utu (English: Mist) is a Finnish mid-wing, T-tailed, single-seat, FAI Standard Class glider that was designed by Ahto Anttila and produced by Fibera in the 1960s.


Design and development

The KK-1e was one of the first fibreglass sailplanes produced, first flying in 1964.

The KK-1e has a 15.0 m (49.2 ft) span wing, with a single spar. The wing employs a NACA 63-618 airfoil at the wing root, changing to a NACA 63-612 section at the wing tip. The wing features a split terminal velocity trailing edge combination spoiler/dive brake. The landing gear is a fixed monowheel.

The aircraft was not type certified and the one aircraft imported into the United States was registered with the Federal Aviation Administration in the Experimental - Exhibition/Racing category.

Operational history

Only one KK-1e was imported into the United States in 1967. As of July 2011 this aircraft was still registered with the FAA to its original owner.

Aircraft on display

  • Finnish Aviation Museum - 2
  • Karhulan ilmailukerho Aviation Museum - 1
  • Specifications (KK-1e)

    Data from Sailplane Directory, Soaring and Karhulan ilmailukerho Aviation Museum

    General characteristics

  • Crew: one
  • Length: 6.5 m (21 ft 4 in)
  • Wingspan: 15.0 m (49 ft 3 in)
  • Wing area: 11.2 m2 (121 sq ft)
  • Aspect ratio: 20:1
  • Airfoil: wing root: NACA 63-618, wing tip: NACA 63-612
  • Empty weight: 187 kg (412 lb)
  • Gross weight: 310 kg (684 lb)
  • Performance

  • Never exceed speed: 249 km/h; 135 kn (155 mph)
  • Maximum glide ratio: 35:1 at 50 mph (80 km/h)
  • Rate of sink: 0.61 m/s (120 ft/min) at 46 mph (74 km/h)
  • Wing loading: 27.6 kg/m2 (5.65 lb/sq ft)
  • References

    Fibera KK-1e Utu Wikipedia

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