Koser-Hrovat KB-1 Triglav

Triglav was a Yugoslavian sailplane, designed by Jaroslav Koser and Stojan Hrovat, then students of the Ljubljana Technical Faculty (Tehniška fakulteta v Ljubljani) of the University of Ljubljana. The first flight was in 1948. The detailed description was published in the Yugoslavian aviation magazine Narodna Krila (People's Wings) in 1949.[1]

KB-1 Triglav
Role Sailplane
National origin Yugoslavia
Manufacturer Koser-Hrovat
First flight 1948

The goal of the design team was to create the new Olympic glider for OSTIV (Organisation Scientifique et Technique du Vol à Voile), in competition with the DFS Meise (which won), amongst others.

Specifications

Data from [1]

General characteristics

  • Crew: 1
  • Length: 6.83 m (22 ft 5 in)
  • Wingspan: 15.0 m (49 ft 3 in)
  • Height: 1.2 m (3 ft 11 in)
  • Wing area: 13.25 m2 (142.6 sq ft)
  • Aspect ratio: 17
  • Airfoil: root Göttingen 549[2] 16%, tip NACA M6 [3]
  • Empty weight: 212 kg (467 lb)
  • Gross weight: 265 kg (584 lb)
  • Max takeoff weight: 302 kg (666 lb)

Performance

  • Stall speed: 42 km/h (26 mph, 23 kn)
  • Never exceed speed: 300 km/h (190 mph, 160 kn)
  • g limits: +12 -10
  • Maximum glide ratio: 1:27 at 75 km/h (40 kn; 47 mph)
  • Rate of sink: 0.67 m/s (132 ft/min) at 62 km/h (33 kn; 39 mph)
  • Wing loading: 20 kg/m2 (4.1 lb/sq ft)

References
  1. "Jedrlica visokich sposobnocti 'Triglav'" (pdf). webzoom.freewebs.com (in Slovenian). Retrieved 28 October 2014.
  2. "GOE 549 AIRFOIL". m-selig.ae.illinois.edu. Retrieved 28 October 2014.
  3. "NACA M6". m-selig.ae.illinois.edu. Retrieved 28 October 2014.
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