In November 1943, the Sukhoi OKB designed an artillery spotter aircraft based on the German Focke-Wulf Fw 189.[1] As designed, the aircraft had a crew of three and was powered by a pair of Shvetsov M-62 engines. The aircraft was initially denied funding but was eventually approved thanks to an intervention by the Soviet Chief Marshal of Artillery N.N. Voronov.[1] As a result of evolving specifications, the crew was increased to four and the engines were changed to more powerful Shvetsov ASh-82M with 1,640 kW (2,200 hp).
The Su-12 prototype flew on 26 August 1947 with N.D. Fikson at the controls. The test flight program was completed by 30 October. Due to problems with the ASh-82M engines, the powerplant was changed to ASh-82FN making 1,380 kW (1,850 hp), but while reliable, the less-powerful engines caused the Su-12 to miss its top speed and service ceiling specifications.[1] The Su-12 successfully completed government testing in September 1949 and was recommended for production. Due to lack of production capacity in the USSR, in October 1949 it was proposed to build the airplane in Czechoslovakia. However, the application for production was denied, citing failure to meet performance specifications.[1] Subsequent efforts by the Sukhoi Design Bureau to secure funding and continue work on the Su-12 were denied.
. Sukhoi Company Museum. Archived from the original on 2011-09-29. Retrieved 2011-07-12.
Notes
Wikimedia Commons has media related to Sukhoi Su-12.
^ abcd. Sukhoi Company Museum. Archived from the original on 2011-09-29. Retrieved 2007-01-14.
^Shavrov V.B. (1994). Istoriia konstruktskii samoletov v SSSR, 1938-1950 gg. (3 izd.). Mashinostroenie. ISBN5217004770.
^Antonov, Vladimir; Gordon, Yefim; Gordyukov, Nikolai; Yakovlev, Vladimir; Zenkin, Vyacheslav; Carruth, Lenox; Miller, Jay (1996). OKB Sukhoi : a history of the design bureau and its aircraft (1st ed.). Earl Shilton: Midland Publishing. pp. 73–75. ISBN9781857800128.
^Lednicer, David. "The Incomplete Guide to Airfoil Usage". m-selig.ae.illinois.edu. Retrieved 16 April 2019.
April 27, 2023
sukhoi, redirects, here, soviet, self, propelled, aircraft, prototype, soviet, reconnaissance, artillery, spotter, aircraft, developed, during, world, 12role, reconnaissance, aircraftmanufacturer, sukhoidesigner, pavel, sukhoifirst, flight, august, 1947status,. Su 12 redirects here For the Soviet self propelled gun see SU 12 The Sukhoi Su 12 Aircraft RK was a prototype Soviet reconnaissance and artillery spotter aircraft developed during World War II Su 12Role Reconnaissance aircraftManufacturer SukhoiDesigner Pavel SukhoiFirst flight 26 August 1947Status PrototypePrimary user Soviet Air ForcesNumber built 1 Contents 1 Development 2 Operators 3 Specifications Su 12 4 See also 5 References 6 External links 7 NotesDevelopment EditIn November 1943 the Sukhoi OKB designed an artillery spotter aircraft based on the German Focke Wulf Fw 189 1 As designed the aircraft had a crew of three and was powered by a pair of Shvetsov M 62 engines The aircraft was initially denied funding but was eventually approved thanks to an intervention by the Soviet Chief Marshal of Artillery N N Voronov 1 As a result of evolving specifications the crew was increased to four and the engines were changed to more powerful Shvetsov ASh 82M with 1 640 kW 2 200 hp The Su 12 prototype flew on 26 August 1947 with N D Fikson at the controls The test flight program was completed by 30 October Due to problems with the ASh 82M engines the powerplant was changed to ASh 82FN making 1 380 kW 1 850 hp but while reliable the less powerful engines caused the Su 12 to miss its top speed and service ceiling specifications 1 The Su 12 successfully completed government testing in September 1949 and was recommended for production Due to lack of production capacity in the USSR in October 1949 it was proposed to build the airplane in Czechoslovakia However the application for production was denied citing failure to meet performance specifications 1 Subsequent efforts by the Sukhoi Design Bureau to secure funding and continue work on the Su 12 were denied Operators Edit Soviet UnionSoviet Air ForceSpecifications Su 12 Edit Data from Shavrov 2 OKB Sukhoi 3 General characteristicsCrew 3 Length 11 92 m 39 ft 1 in Wingspan 21 57 m 70 ft 9 in Height 5 54 m 18 ft 2 in Wing area 52 m2 560 sq ft Airfoil root NACA 23014 tip NACA 23009 25 4 Empty weight 6 970 kg 15 366 lb Gross weight 9 610 kg 21 186 lb Fuel capacity 620 L 160 US gal 140 imp gal in two wing tanks and two engine nacelle tanks Powerplant 2 Shvetsov ASh 82FN 14 cylinder air cooled radial piston engines 1 380 kW 1 850 hp each Propellers 4 bladed AV 9VF21K 3 6 m 11 ft 10 in diameter feathering constant speed propellersPerformance Maximum speed 531 km h 330 mph 287 kn at 5 600 m 18 373 ft Range 1 140 km 710 mi 620 nmi at 1 000 m 3 281 ft Endurance gt 4 hours at 1 000 m 3 281 ft Service ceiling 11 000 m 36 000 ft Time to altitude 5 000 m 16 404 ft in 7 minutes 30 seconds Take off run 230 m 755 ft Landing run 320 m 1 050 ft Armament Guns 4 20 mm Berezin B 20 autocannon 1 fixed forward firing 2 in the upper turret 1 in the tail turret Bombs Up to 800 kg 1 765 lb of bombsSee also EditAircraft of comparable role configuration and era Focke Wulf Fw 189References EditAntonov Vladimir amp Gordon Yefim amp others OKB Sukhoi Leicester Midland 1996 ISBN 1 85780 012 5External links Edit Sukhoi Su 12 Sukhoi Company Museum Archived from the original on 2011 09 29 Retrieved 2011 07 12 Notes Edit Wikimedia Commons has media related to Sukhoi Su 12 a b c d Sukhoi Su 12 Sukhoi Company Museum Archived from the original on 2011 09 29 Retrieved 2007 01 14 Shavrov V B 1994 Istoriia konstruktskii samoletov v SSSR 1938 1950 gg 3 izd Mashinostroenie ISBN 5217004770 Antonov Vladimir Gordon Yefim Gordyukov Nikolai Yakovlev Vladimir Zenkin Vyacheslav Carruth Lenox Miller Jay 1996 OKB Sukhoi a history of the design bureau and its aircraft 1st ed Earl Shilton Midland Publishing pp 73 75 ISBN 9781857800128 Lednicer David The Incomplete Guide to Airfoil Usage m selig ae illinois edu Retrieved 16 April 2019 Retrieved from https en wikipedia org w index php title Sukhoi Su 12 amp oldid 1143293824, wikipedia, wiki, book, books, library,
