|Early production ANT-9 with three engines|
|National origin||Soviet Union|
|First flight||May 1929|
|Developed into||Tupolev ANT-14|
The Tupolev ANT-9 (Russian: Туполев АНТ-9) was a Soviet passenger aircraft of the 1930s. It was developed as a reaction to the demand for a domestic airliner. At this time Deruluft, one of the forerunners of Aeroflot, only flew with foreign models, which were mainly German or Dutch.
Design work began in December 1927. The first prototype, named Krylia Sovietov (wing of the Soviets) used three French Gnome-Rhone Titan radial engines. It was presented to the public on 1 May 1929 at Red Square and it went to the national flight testing, which was completed in June. In the first series 12 aircraft were built. Two of these airplanes were used with Deruluft starting from 1933 on the Berlin-Moscow service. Mikhail Gromow accomplished a European round flight on the route Moscow – Travemünde – Berlin – Paris – Rome – Marseille – London – Paris – Berlin – Warsaw – Moscow with the Krylia Sovietov, which lasted from 10 July to 8 August 1929 and generated considerable publicity. It carried eight passengers over a distance of 9,037 km (5,615 mi), in 53 flying hours with an average speed of 177 km/h (110 mph).
In September 1930 testing was finally completed, and series production was continued with only two M-17-engines of Soviet design, which provided for a higher topspeed. The official name for this model was PS-9 (пассажирский самолёт, passazhirskiy samolot = passenger airplane). The number of built aircraft amounted to about 70 machines. Up to the beginning of the German invasion of the Soviet Union they served as passenger or staff airplanes mainly on routes in Central Asia and the Caucasus. Afterwards they were used until 1943 as transportation and medical airplanes.
Accidents and incidents
- On December 6, 1936, a Deruluft ANT-9, registration CCCP-D311, crashed near Moscow due to pilot error, killing nine of 14 on board.
Data from The Osprey Encyclopedia of Russian Aircraft 1875–1995
- Crew: 2
- Capacity: 9 passengers
- Length: 17.01 m (55 ft 9⅔ in)
- Wingspan: 23.85 m (78 ft 10 in)
- Height: 5 m (16 ft 4¾ in)
- Wing area: 84.0 m² (904 ft²)
- Empty weight: 4,400 kg (9,700 lb)
- Loaded weight: 6,200 kg (13,668 lb)
- Powerplant: 3 × Mikulin M-17 water-cooled V-12, 373 kW (500 hp) each
- Maximum speed: 215 km/h (117 kn, 134 mph)
- Cruise speed: 180 km/h (97 kn, 112 mph)
- Range: 700 km (378 nm, 435 mi)
- Service ceiling: 5,100 m (16,732 ft)
- Rate of climb: 2.8 m/s (550 ft/min)
- Wing loading: 73.8 kg/m² (15.1 lb/ft²)
- Power/mass: 0.12 kW/kg (0.073 hp/lb)
- de:Tupolew ANT-9
- Gunston 1995, p.391.
- Duffy and Kandalov 1996, p.208.
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