ITS-8

Role	Motor-glider
National origin	Poland
Manufacturer	Institute of gliding techniques (I.T.S.), University of Lwów
Designer	Wieslaw Stępniewski
First flight	late August 1936
Number built	2

The ITS-8 was a twin-boom motor glider

Design and development

Until the mid-1930s the Polish government had supported amateur aeronautical activity. The end of this support forced designers to consider low cost powered gliders and and other small, low powered, structurally simple aircraft. The twin-boom, pusher configuration ITS-8 motor-glider was a response from the Lwów University's Institute of Gliding Technques to these changed conditions.^[1]^[2]

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Variants

ITS-8: First prototype.
ITS-8W: Second prototype, with more powerful engine and improved engine mounting
ITS-8M: Intended for meteorological research, with flaps and retractable landing gear, but unfinished at the start of World War II.

Specifications (ITS-)

Data from J. Cynk (1971)^[2]

General characteristics

Crew: One
Length: 6.4 m (21 ft 0 in)
Wingspan: 13.6 m (44 ft 7 in)
Wing area: 16.9 m² (182 sq ft)
Empty weight: 180 kg (397 lb)
Gross weight: 290 kg (639 lb)
Powerplant: 1 × Koeber Kötter M3 flat twin engine, 13 kW (18 hp)
Propellers: 2-bladed Zomanski, 1.36 m (4 ft 6 in) diameter wooden

Performance

Maximum speed: 120 km/h (75 mph, 65 kn) at sea level
Cruise speed: 110 km/h (68 mph, 59 kn)
Service ceiling: 1,500 m (4,900 ft)
Rate of climb: 1.3 m/s (260 ft/min)
Rate of sink: 0.91 m/s (179 ft/min) engine off
Landing speed: 45 km/h (28 mph; 24 kn)

References

^ Cynk, Jerzy (1971). Polish Aircraft 1893-1939. London: Putnam Publishing. p. 644-5-4. ISBN 0 370 00085 4.
^ ^a ^b Cynk, Jerzy (1971). Polish Aircraft 1893-1939. London: Putnam Publishing. p. 621-4. ISBN 0 370 00085 4. Cite error: The named reference "Cynk" was defined multiple times with different content (see the help page).
^ [hhttp://www.samolotypolskie.pl/samoloty/1309/126/ITS-8 "ITS-8"]. Samolotypolskie.pl. Retrieved 13 May 2018.

Category:Twin boom aircraft Category:Pusher aircraft Category:Motor gliders Category:Polish sport aircraft 1930–1939

[Cynk0-1] Cynk, Jerzy (1971). Polish Aircraft 1893-1939. London: Putnam Publishing. p. 644-5-4. ISBN 0 370 00085 4.

[Cynk-2] Cynk, Jerzy (1971). Polish Aircraft 1893-1939. London: Putnam Publishing. p. 621-4. ISBN 0 370 00085 4. Cite error: The named reference "Cynk" was defined multiple times with different content (see the help page).

[LOT-3] [hhttp://www.samolotypolskie.pl/samoloty/1309/126/ITS-8 "ITS-8"]. Samolotypolskie.pl. Retrieved 13 May 2018.

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