IS-B Komar

The IS-B Komar (Instytut Szybownictwa – gliding institute) was a single-seat glider designed and built in Poland from 1947.

IS-B Komar
Role Glider
National origin Poland
Manufacturer Jeżów Glider Workshop
Designer Antoni Kocjan & Marian Wasilewski
First flight 16 January 1949
Number built 23
Developed from Kocjan Komar-bis

Development

During the 1930s Antoni Kocjan designed and built the Kocjan Komar (gnat) series of gliders, with 67 built in Poland and licensed production in several countries, before the start of World War II. After the war Marian Wasilewski, at the gliding institute, resurrected the design with improvements, resulting in the IS-B Komar, (sometimes misidentified as the IS-8 Komar or vice versa), which flew in January 1948 and entered production in that year with five "IS-B Komar 48" gliders built. Production continued in 1949, as the IS-B Komar 49, with 23 built. The IS-B was constructed primarily of wood with a plywood covered fuselage and fabric covered high set strutted wings. On 19–20 October 1949, Stanisław Wielgus, flying "Komar 48" SP-732, established a world record for duration, with a flight lasting 35 hrs 14 min. The "IS-B Komar" gliders continued flying with clubs up to the mid-1960s and several are preserved in museums or restored to airworthy status.

Variants
IS-B Komar 48
Production model for 1948, 5 built.
IS-B Komar 49
Productionj model for 1949, 20 built.

Specifications (IS-B Komar)

Data from http://www.piotrp.de/SZYBOWCE/pis8.htm

General characteristics

  • Crew: 1
  • Length: 6.75 m (22 ft 2 in)
  • Wingspan: 15.8 m (51 ft 10 in)
  • Height: 1.75 m (5 ft 9 in)
  • Wing area: 17.4 m2 (187.3 sq ft)
  • Aspect ratio: 14.4:1
  • Airfoil: Göttingen 535
  • Empty weight: 148 kg (326.3 lb)
  • Gross weight: 225 kg (496 lb)

Performance

  • Maximum speed: 140 km/h (87 mph, 75.6 kn)
  • Stall speed: 44 km/h (27.34 mph, 23.76 kn)
  • Maximum glide ratio: 19 @ 64 km/h (34.56 kts / 39.77 mph)
  • Rate of sink: 0.80 m/s (157.48 ft/min)
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See also

References
    • Taylor, J. H. (ed) (1989) Jane's Encyclopedia of Aviation. Studio Editions: London. p. 29
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