Technical data
Type ANT-9 'Krylia Sovetov' ANT-9
Function Passenger prototype Passenger
Year 1929 1931 1933
Crew 2
Engines 3*230hp Gnome - Rhone - Titan 3*300hp M-26 3*300hp Wright Whirlwind
Length 17.0m 17.0m 16.65m
Wingspan 23.7m 23.7m 23.8m
Wing area 84.0m2 84.0m2 84.0m2
Empty weight 3353kg 3950kg 3680kg
Loaded weight 5043kg 6000kg 5690kg
Wing Load (kg/m2) 60.0 71.5 67.7
Power load (kg/hp) 7.32 6.66 6.32
Speed at 0m 209km/h 185km/h 205km/h
Speed at 3000m - - 170km/h
Landing Speed 110km/h 115km/h 93km/h
Landing Roll - - 150m 18sec
Takeoff Roll - - 170m 16sec
Turn time - - 33sec
Range 1000km 1000km 700km
Flight Endurance 5.0h 5.3h -
Ceiling 3810m 3400m 4500m
Climb
1000m 6.8min 7.0min 8.5min
2000m 15.5min 15.9min 16.0min
3000m 30.7min 39.4min 28.0min
Payload
Fuel & oil 700kg 1130kg 1000kg
Seats 9 9 9
Cargo ?kg ?kg ?kg

ANT-9 by A.N.Tupolev

38k b/w "History of aircraft construction in the USSR", Vol.1 p.379

High-wing all-metal passenger monoplane, using tail and wing of the ANT-7 (R-6). Root sections of the wing were extended by 0.5m. Fuselage was replaced by one with spacious passenger cabin. Pilots acquired an enclosed cockpit with dual controls. Aircraft had common for the 20-30's corrugated aluminum skin on wings, tail and fuselage. Three Gnome-Titan engines provided good power-to-weight ratio. Aircraft had very good flight performance and easy handling.

In 1927 industry of the USSR recovered after the Civil War turmoil. It was a right time to obtain 'respectable' domestic airliner, capable to compete with imported and license built planes. AGOS TsAGI got government order on such aircraft in December 1927. Mockup of ANT-9 was approved in October 1928.

Following popular tradition, ANT-9 was completed shortly prior to May 1, 1929. Aircraft was presented to public on the Red Square.

In May-June 1929 series of trials were performed, including flight Moscow - Odessa - Sevastopol - Kiev - Moscow (by crew Gromov, Mikheev, Spirin). Aircraft was named 'Wing of Soviets' and during July 10 - August 8, 1929 performed international tour Moscow - Travenmunde - Berlin - Paris - Marcel - London - Paris - Berlin - Warsaw - Moscow, covering 9037km in 53 flight hours.

Aircraft was found very technological and reliable, but the engines became a problem. Decision was made to use domestic 300hp M-26 instead of imported powerplant. But the M-26 was soon kicked out of production due to some design defects.

About 10 ANT-9 were redesigned to accommodate three Wright Whirlwind engines with 3-blade metal propellers. First of Wright-powered ANT-9s passed trials in September 1930. Those aircraft (and all other modifications) had slightly increased tailfin.

A few were used by the VVS as a VIP aircraft. Military variant with normal and underbelly retractable turrets was under construction. It was presented in January 1932. Abandoned before trials. Another armed version with gunner position in the nose replacing the central engine was studied.

Ambulance equipment was presented to State Commetee on January 11, 1932. This version was debated and studied but never built.

Two ANT-9 with Wright engines was transferred to joint Soviet-German company DeruLuft. German crew cowered corrugated skin with fabric and gained some speed.

PredecessorsModifications/Developments

ANT-7 R-6

PS-9

ANT-14 'Pravda'

References
  • "History of aircraft construction in the USSR", Vol.1 p.378-380;
  • Links
  • ANT-9, PS-9
  • ANT-9 / PS-9 at the Virtual Aircraft Museum
  • ANT-9, A.N.Tupolev
  • A.N.Tupolev ANT-9
  • A.N.Tupolev ANT-9
  • A.N.Tupolev page
  • M.M.Gromov page
  • Modified September 18, 1998 Back to
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