• Source: URMV-3 IS-2

The IS-2 was an intermediate training glider designed by Iosif Şilimon and built in Romania in the 1950s at the 3/info/urmv" target="_blank">URMV-3 (Rom: Uzinele de Reparatii Material Volant-3 - Glider repair and manufacture factory) factory at Brașov.




Design and development


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. 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.




Specifications (IS-2)


Data from The World's Sailplanes:Die Segelflugzeuge der Welt:Les Planeurs du Monde Volume IIGeneral characteristics
Crew: 1
Length: 6.54 m (21 ft 5 in)
Wingspan: 12.3 m (40 ft 4 in)
Height: 1.05 m (3 ft 5 in) at cockpit
Wing area: 14.7 m2 (158 sq ft)
Aspect ratio: 10.3
Airfoil: Root:Göttingen 535, Mid Göttingen 535, Tip Göttingen 676
Empty weight: 152 kg (335 lb)
Gross weight: 250 kg (551 lb)
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



Aircraft of comparable role, configuration, and era

Grunau Baby
Slingsby Cadet
Slingsby Kirby Tutor

Related lists
List of gliders




Notes






References

Kata Kunci Pencarian:

• URMV-3 IS-2
• URMV-3 IS-3
• URMV-3 IS-4
• IS2 (disambiguation)
• List of aircraft (U)
• List of Romanian gliders
• List of gliders (U)
• Iosif Șilimon
• IIL IS-5
• IIL IS-10