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The Kalinin K-6 was a mail-plane designed by Konstantin Alekseevič Kalinin. It was an aircraft largely derived from the previous Kalinin K-5, which shared its wing, tail and landing gear.[1] This aircraft differed from the previous one by the new fuselage design, which was slender and had a four-meter compartment for the load (370 kg). The K-6 flew for the first time in 1930 but remained at the prototype stage, since mass production was never authorised.

K-6
Role	Mail-plane / fast print matrix transport Type of aircraft
National origin	USSR
Manufacturer	GROS
Designer	Konstantin Alekseyevich Kalinin
First flight	August 1930
Number built	1
Developed from	Kalinin K-5

Specifications (K-6)

Data from The Osprey Encyclopedia of Russian Aircraft 1875–1995[2]

General characteristics

• Crew: 2
• Length: 15 m (49 ft 3 in)
• Wingspan: 20 m (65 ft 7 in)
• Wing area: 64 m² (690 sq ft)
• Empty weight: 1,720 kg (3,792 lb)
• Gross weight: 2,820 kg (6,217 lb)
• Fuel capacity: 550 kg (1,210 lb) fuel; 50 kg (110 lb) oil
• Powerplant: 1 × Gnome et Rhône 9A Jupiter 9-cylinder air-cooled radial piston engine, 310 kW (420 hp)
• Propellers: 2-bladed fixed pitch propeller

Performance

• Maximum speed: 210 km/h (130 mph, 110 kn)
• Cruise speed: 170 km/h (110 mph, 92 kn)
  
• Landing speed: 75 km/h (47 mph; 40 kn)
• Range: 1,250 km (780 mi, 670 nmi)
• Service ceiling: 5,600 m (18,400 ft)
• Time to altitude: 1,000 m (3,300 ft) in 5 minutes

References

На других языках

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- [en] Kalinin K-6

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[it] Kalinin K-6

Il Kalinin K-6 era un aereo postale progettato da Konstantin Alekseevič Kalinin. Si trattava di un velivolo ampiamente derivato dal precedente Kalinin K-5, del quale condivideva ala, coda e carrello d'atterraggio. Questo aereo si differiva dal precedente per la fusoliera di nuovo progetto, che era snella ed aveva all'interno un compartimento di quattro metri per il carico (370 kg). Il K-6 volò per la prima volta nel 1930 ma rimase allo stadio di prototipo, visto che non ne fu mai autorizzata la produzione in serie.

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[ru] К-6

К-6 — лёгкий почтовый самолёт конструкции К. А. Калинина.

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