URMV-3 IS-2

IS-2
Role Sailplane
National origin Romania
Manufacturer URMV-3[1]
Designer Iosif Șilimon[1]
First flight 14 August 1950 [1]

The IS-2 was an intermediate training glider designed by Iosif Şilimon and built in Romania in the 1950s at the URMV-3 (Rom: Uzinele de Reparatii Material Volant-3 - Glider repair and manufacture factory) factory at Brașov.[1]

Design and development

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The IS-2 was designed as an intermediate training glider. Construction was largely of wood with fabric and plywood skinning, similar o the Grunau Baby pre-war German glider.[1] Very little is known of the IS-2s development or operational history. Of conventional configuration with high-set cantilever wings and cruciform tail-unit, the IS-2 was also flown with an increased span wing.[2]

Specifications (IS-2)

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Data from The World's Sailplanes:Die Segelflugzeuge der Welt:Les Planeurs du Monde Volume II[2]

General characteristics

Performance

  • Stall speed: 42 km/h (26 mph, 23 kn)
  • Never exceed speed: 180 km/h (110 mph, 97 kn) *Rough air speed max: 130 km/h (81 mph; 70 kn)
  • Aerotow speed: 110 km/h (68 mph; 59 kn)
  • Winch launch speed: 80 km/h (50 mph; 43 kn)
  • Terminal velocity: with full air-brakes at max all-up weight 180 km/h (112 mph; 97 kn)
  • g limits: +4 -2.2 at 185 km/h (99.9 kn)
  • Maximum glide ratio: 20 at 69 km/h (43 mph; 37 kn)
  • Rate of sink: 0.77 m/s (152 ft/min) at 32.9 mph; 28.6 kn (53 km/h)
  • Wing loading: 17 kg/m2 (3.5 lb/sq ft)

See also

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Aircraft of comparable role, configuration, and era

Related lists List of gliders

Notes

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  1. ^ a b c d e Gudju, Ion; Gheorghe Iacobescu; Ovidiu Ionescu (1974). Romanian Aeronautical Constructions 1905-1974. Bucharest.{{cite book}}: CS1 maint: location missing publisher (link)
  2. ^ a b Shenstone, B.S.; K.G. Wilkinson (1963). The World's Sailplanes:Die Segelflugzeuge der Welt:Les Planeurs du Monde Volume II (in English, French, and German) (1st ed.). Zurich: Organisation Scientifique et Technique Internationale du Vol a Voile (OSTIV) and Schweizer Aero-Revue. pp. 178–179.

References

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  • Shenstone, B.S.; K.G. Wilkinson (1963). The World's Sailplanes:Die Segelflugzeuge der Welt:Les Planeurs du Monde Volume II (in English, French, and German) (1st ed.). Zurich: Organisation Scientifique et Technique Internationale du Vol a Voile (OSTIV) and Schweizer Aero-Revue. pp. 178–179.
  • Gudju, Ion; Gheorghe Iacobescu; Ovidiu Ionescu (1974). Romanian Aeronautical Constructions 1905-1974. Bucharest.{{cite book}}: CS1 maint: location missing publisher (link)