Fibera KK-1e Utu

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.[1][2][3][4]

KK-1e Utu
Role Glider
National origin Finland
Manufacturer Fibera
Designer Ahto Anttila
First flight August 1964
Introduction 1964
Status Production completed
Number built 22

Design and development

The KK-1e was one of the first fibreglass sailplanes produced, first flying in 1964.[1][2]

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.[1][2][5]

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.[1][2][3]

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.[3]

Aircraft on display
Fibera KK-1e Utu hanging in the Karhulan ilmailukerho Aviation Museum.

Specifications (KK-1e)

Data from Sailplane Directory, Soaring and Karhulan ilmailukerho Aviation Museum[1][2][6]

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 (155 mph, 135 kn)
  • 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)

See also

Related lists

References
  1. Activate Media (2006). "KK-1e Utu Fibrera". Archived from the original on 25 August 2012. Retrieved 15 July 2011.
  2. Said, Bob: 1983 Sailplane Directory, Soaring Magazine, page 87, Soaring Society of America November 1983. USPS 499-920
  3. Federal Aviation Administration (July 2011). "Make / Model Inquiry Results N1070". Retrieved 15 July 2011.
  4. Finnish Aviation Museum (2009). "Fibera KK-1e UTU". Retrieved 1 July 2011.
  5. Lednicer, David (2010). "The Incomplete Guide to Airfoil Usage". Archived from the original on 20 April 2010. Retrieved 1 July 2011.
  6. Karhulan ilmailukerho Aviation Museum (n.d.). "Fibera KK-1e Utu (OH-LKF)". Archived from the original on 14 September 2011. Retrieved 15 July 2011.
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