The Tupolev ANT-7, known by the VVS as the Tupolev R-6 ( R – razvedchik – reconnaissance), was a reconnaissance aircraft and escort fighter of the Soviet Union. The R-6 traces its roots back to early 1928 when the Soviet Air Force needed a long-range multirole aircraft. The requirements were that it could be used for long-range transport, defensive patrolling, reconnaissance, light bombing and torpedo attack.
Under Ivan Pogosski and guided by Andrei Tupolev, TsAGI developed the ANT-7 from the Tupolev TB-1 by scaling it down by about one third.[1] Power for the ANT-7 was intended to be provided by two 388 kW (520 hp) – 455 kW (610 hp) Hispano Suiza engines or 313 kW (420 hp) Bristol Jupiter engines, but the prototype was powered by two 373 kW (500 hp) – 529 kW (709 hp) BMW VI engines.
The first flight of the ANT-7 took place on 11 September 1929, piloted by Mikhail Gromov. Flight tests started in March 1930 after TsAGi decided to postpone them until after the winter. That summer, the NII-VVS (Nauchno-Issledovatel'skiy Institut Voyenno-Vozdooshnykh Seel – air force scientific test institute) conducted state tests which revealed tailplane buffeting, which was alleviated by fitting enlarged elevators. The next flight encountered radiator damage and an engine failure, but in spite of this, the ANT-7 passed the state acceptance tests.
Operational historyedit
Production aircraft were designated R-6 by the Soviet Air Force. The first production aircraft was rolled off the GAZ-22, (GAZ – Gosudarstvenny Aviatsionnyy Zavod – state aviation plant/factory), assembly line in November 1931, a year after production started. Another 410 aircraft were made during the following three years: 385 at GAZ-22 in Moscow (one of these was the R-6 Limuzin), five at GAZ-31 in Taganrog (floatplanes designated KR-6P), and 20 more at GAZ-12 in Komsomolsk-on-Amur.
The standard aircraft crew consisted of the pilot, gunner and observer and the aircraft was able to carry 113.4 kg (250 lb) of bombs to a distance of up to 965.6 km (600 mi). Some were built with floats as the MP-6, (also known as KR-6P), for maritime patrol duties. Another variant was the KR-6 (KR – Kreiser Razveyedchik – cruiser reconnaissance), which had two PV-2 machine guns and a second gunner, that was later relegated to training duties.
By 1935, the R-6 was becoming obsolete, and several were transferred to Aeroflot and Avia Arktika, which used them to carry passengers and cargo in Siberia before the Great Patriotic War, designated PS-7-2M17 (the "2M17" showed that the aircraft were powered by two Mikulin M-17s), or as MP-6-2M17 if floats were attached.
Variantsedit
ANT-7
The OKB designation of the project and prototype, powered by two 544.4 kW (730 hp) BMW VI V-12 engines.
R-6
(R – Razvyedchik – reconnaissance) reconnaissance version, powered by two 544.4 kW (730 hp) Mikulin M-17F V-12 engines. first flight 1929, trials 1930.
KR-6
(KR – Kreiser Razvyedchik – cruiser reconnaissance) escort fighter version 1934, powered by two 507.1 kW (680 hp) Mikulin M-17 V-12 engines, fitted with two PV-2 machine guns and a second gunner.
KR-6P
Alternative designation of the MR-6 floatplane version.
MP-6 2M-17
(Morskoj Paassazhirskii – seaplane passenger transport) Civil floatplane version, powered by two 507.1 kW (680 hp) Mikulin M-17 V-12 engines..
PS-7 2M-17
(Paassazhirskii – passenger transport) Civil transport version PS-7 2M-17, cargo and passenger transport, first versions open cockpit, one version enclosed.
(Paassazhirskii – passenger transport) Civil cargo and passenger transport version.
R-6 Limuzin
Nine-seat civil transport version with a closed cockpit and a seven-seat cabin with glass windows and a luggage compartment. Powered by two 544.4 kW (730 hp) BMW VI V-12 engines. First flown in July 1933, the sole R-6L crashed on 5 September 1933 as a result of a maintenance error.
ANT-18
Ground attack version with two Mikulin M-34 engines, armor protection, and two dorsally-mounted machine guns.[2]
June 23, 1941: A Dalstroi Aviation PS-7 crashed on takeoff from Chokurdakh after the left float struck a submerged log; all five on board survived, but the aircraft was written off.[3]
October 19, 1943: A Dalstroi Aviation PS-7 crashed on takeoff from Zyryanka owing to improper luggage loading caused by crew error; all 12 on board survived, but the aircraft was written off.[4]
Specifications (R-6)edit
Data from The Osprey Encyclopedia of Russian Aircraft 1875 – 1995[1]
^Авария ПС-7 авиаотряда Дальстроя НКВД СССР в Чокурдахе [Accident PS-7 Dalstroi Aviation near Chokurdakh] (in Russian). airdisaster.ru. Retrieved 2014-11-13.
^Авария ПС-7 авиаотряда Дальстроя НКВД СССР в Зырянке [Accident PS-7 Dalstroi Aviation near Zyrianka] (in Russian). airdisaster.ru. Retrieved 2014-11-13.
Bibliographyedit
Duffy, Paul & Kandalov, Andrei. (1996) Tupolev, The Man and His Aircraft. Warrendale, Pennsylvania: Society of Automotive Engineers. ISBN1-56091-899-3
Gordon, Yefim & Rigamant, Vladimir (2005). OKB Tupolev: A History of the Design Bureau and its Aircraft. Hinckley, England: Midland Publishing. ISBN1-85780-214-4.
Gunston, Bill (1995b). Tupolev Aircraft since 1922. Annapolis, Maryland: Naval Institute Press. ISBN1-55750-882-8.
Kulikov, V. & Kotel'nikov, V. (January 2001). "Les Tupolev ANT-7 et dérivés: des avions victimes du "mal de mer"" [The Tupolev ANT-7 and its Derivatives: The Aircraft Victims of "Seasickness"]. Avions: Toute l'Aéronautique et son histoire (in French) (94): 48–54. ISSN 1243-8650.
Kulikov, V. & Kotel'nikov, V. (February 2001). "Un B.C.R. à la soviétique: le Tupolev R-6/KR-6 et ses dérivés" [A Soviet B.C.R.: The Tupolev R-6/KR-6 and its Derivatives]. Avions: Toute l'Aéronautique et son histoire (in French) (95): 35–40. ISSN 1243-8650.
Kulikov, V. & Kotel'nikov, V. (January 2001). "Les Tupolev R-6 et leurs dérivés durant la Seconde Guerre Mondiale" [The Tupolev R-6 and Their Derivatives During the Second World War]. Avions: Toute l'Aéronautique et son histoire (in French) (94): 48–55. ISSN 1243-8650.
The initial version of this article was based on material from aviation.ru. It has been released under the GFDL by the copyright holder.
April 27, 2024
tupolev, known, tupolev, razvedchik, reconnaissance, reconnaissance, aircraft, escort, fighter, soviet, union, traces, roots, back, early, 1928, when, soviet, force, needed, long, range, multirole, aircraft, requirements, were, that, could, used, long, range, . The Tupolev ANT 7 known by the VVS as the Tupolev R 6 R razvedchik reconnaissance was a reconnaissance aircraft and escort fighter of the Soviet Union The R 6 traces its roots back to early 1928 when the Soviet Air Force needed a long range multirole aircraft The requirements were that it could be used for long range transport defensive patrolling reconnaissance light bombing and torpedo attack R 6 Role Experimental aircraft Manufacturer Tupolev Designer TsAGI First flight 20 October 1929 Introduction 1930s Retired 1941 Status Retired Primary users VVSAeroflot Avia Arktika Produced 1931 1934 Number built 411 Developed from Tupolev TB 1 Contents 1 Design and development 2 Operational history 3 Variants 4 Operators 5 Accidents and incidents 6 Specifications R 6 7 See also 8 References 9 BibliographyDesign and development editUnder Ivan Pogosski and guided by Andrei Tupolev TsAGI developed the ANT 7 from the Tupolev TB 1 by scaling it down by about one third 1 Power for the ANT 7 was intended to be provided by two 388 kW 520 hp 455 kW 610 hp Hispano Suiza engines or 313 kW 420 hp Bristol Jupiter engines but the prototype was powered by two 373 kW 500 hp 529 kW 709 hp BMW VI engines The first flight of the ANT 7 took place on 11 September 1929 piloted by Mikhail Gromov Flight tests started in March 1930 after TsAGi decided to postpone them until after the winter That summer the NII VVS Nauchno Issledovatel skiy Institut Voyenno Vozdooshnykh Seel air force scientific test institute conducted state tests which revealed tailplane buffeting which was alleviated by fitting enlarged elevators The next flight encountered radiator damage and an engine failure but in spite of this the ANT 7 passed the state acceptance tests Operational history editProduction aircraft were designated R 6 by the Soviet Air Force The first production aircraft was rolled off the GAZ 22 GAZ Gosudarstvenny Aviatsionnyy Zavod state aviation plant factory assembly line in November 1931 a year after production started Another 410 aircraft were made during the following three years 385 at GAZ 22 in Moscow one of these was the R 6 Limuzin five at GAZ 31 in Taganrog floatplanes designated KR 6P and 20 more at GAZ 12 in Komsomolsk on Amur The standard aircraft crew consisted of the pilot gunner and observer and the aircraft was able to carry 113 4 kg 250 lb of bombs to a distance of up to 965 6 km 600 mi Some were built with floats as the MP 6 also known as KR 6P for maritime patrol duties Another variant was the KR 6 KR Kreiser Razveyedchik cruiser reconnaissance which had two PV 2 machine guns and a second gunner that was later relegated to training duties By 1935 the R 6 was becoming obsolete and several were transferred to Aeroflot and Avia Arktika which used them to carry passengers and cargo in Siberia before the Great Patriotic War designated PS 7 2M17 the 2M17 showed that the aircraft were powered by two Mikulin M 17s or as MP 6 2M17 if floats were attached Variants editANT 7 The OKB designation of the project and prototype powered by two 544 4 kW 730 hp BMW VI V 12 engines R 6 R Razvyedchik reconnaissance reconnaissance version powered by two 544 4 kW 730 hp Mikulin M 17F V 12 engines first flight 1929 trials 1930 KR 6 KR Kreiser Razvyedchik cruiser reconnaissance escort fighter version 1934 powered by two 507 1 kW 680 hp Mikulin M 17 V 12 engines fitted with two PV 2 machine guns and a second gunner KR 6P Alternative designation of the MR 6 floatplane version MP 6 2M 17 Morskoj Paassazhirskii seaplane passenger transport Civil floatplane version powered by two 507 1 kW 680 hp Mikulin M 17 V 12 engines PS 7 2M 17 Paassazhirskii passenger transport Civil transport version PS 7 2M 17 cargo and passenger transport first versions open cockpit one version enclosed MR 6 Morskoj razvyedchik maritime reconnaissance R 6 torpedo bomber version 1932 P 6 Paassazhirskii passenger transport Civil cargo and passenger transport version R 6 Limuzin Nine seat civil transport version with a closed cockpit and a seven seat cabin with glass windows and a luggage compartment Powered by two 544 4 kW 730 hp BMW VI V 12 engines First flown in July 1933 the sole R 6L crashed on 5 September 1933 as a result of a maintenance error ANT 18 Ground attack version with two Mikulin M 34 engines armor protection and two dorsally mounted machine guns 2 Operators editMilitary operators nbsp Soviet Union Soviet Air Force Soviet Naval Aviation Civil operators nbsp Soviet Union Aeroflot Avia ArktikaAccidents and incidents editJune 23 1941 A Dalstroi Aviation PS 7 crashed on takeoff from Chokurdakh after the left float struck a submerged log all five on board survived but the aircraft was written off 3 October 19 1943 A Dalstroi Aviation PS 7 crashed on takeoff from Zyryanka owing to improper luggage loading caused by crew error all 12 on board survived but the aircraft was written off 4 Specifications R 6 editData from The Osprey Encyclopedia of Russian Aircraft 1875 1995 1 General characteristicsCrew four Length 15 06 m 49 ft 5 in Wingspan 23 2 m 76 ft 1 in Wing area 80 m2 860 sq ft Empty weight 3 856 kg 8 501 lb Gross weight 6 472 kg 14 268 lb Powerplant 2 Mikulin M 17F V 12 water cooled piston engines 540 kW 720 hp each Performance Maximum speed 230 km h 140 mph 120 kn at sea level 216 km h 134 mph at 3 000 m 9 843 ft Range 800 km 500 mi 430 nmi Service ceiling 5 620 m 18 440 ft Rate of climb 2 7 m s 530 ft min Wing loading 81 kg m2 17 lb sq ft Power mass 0 170 kW kg 0 10 hp lb Take off distance 160 m 525 ft 11 seconds Landing distance 250 m 820 ft at 110 km h 68 mph Armament 5 7 62 mm 0 3 in DA 2 machine gunsSee also editRelated development Tupolev TB 1 Tupolev ANT 8 Tupolev ANT 9 Related lists List of interwar military aircraft List of military aircraft of the Soviet Union and the CISReferences edit a b Gunston 1995a pp 388 389 Gordon amp Rigamant Avariya PS 7 aviaotryada Dalstroya NKVD SSSR v Chokurdahe Accident PS 7 Dalstroi Aviation near Chokurdakh in Russian airdisaster ru Retrieved 2014 11 13 Avariya PS 7 aviaotryada Dalstroya NKVD SSSR v Zyryanke Accident PS 7 Dalstroi Aviation near Zyrianka in Russian airdisaster ru Retrieved 2014 11 13 Bibliography editDuffy Paul amp Kandalov Andrei 1996 Tupolev The Man and His Aircraft Warrendale Pennsylvania Society of Automotive Engineers ISBN 1 56091 899 3 Gordon Yefim amp Rigamant Vladimir 2005 OKB Tupolev A History of the Design Bureau and its Aircraft Hinckley England Midland Publishing ISBN 1 85780 214 4 Gunston Bill 1995a The Osprey Encyclopedia of Russian Aircraft 1875 1995 London Osprey ISBN 1 85532 405 9 Gunston Bill 1995b Tupolev Aircraft since 1922 Annapolis Maryland Naval Institute Press ISBN 1 55750 882 8 Kulikov V amp Kotel nikov V January 2001 Les Tupolev ANT 7 et derives des avions victimes du mal de mer The Tupolev ANT 7 and its Derivatives The Aircraft Victims of Seasickness Avions Toute l Aeronautique et son histoire in French 94 48 54 ISSN 1243 8650 Kulikov V amp Kotel nikov V February 2001 Un B C R a la sovietique le Tupolev R 6 KR 6 et ses derives A Soviet B C R The Tupolev R 6 KR 6 and its Derivatives Avions Toute l Aeronautique et son histoire in French 95 35 40 ISSN 1243 8650 Kulikov V amp Kotel nikov V January 2001 Les Tupolev R 6 et leurs derives durant la Seconde Guerre Mondiale The Tupolev R 6 and Their Derivatives During the Second World War Avions Toute l Aeronautique et son histoire in French 94 48 55 ISSN 1243 8650 The initial version of this article was based on material from aviation ru It has been released under the GFDL by the copyright holder Retrieved from https en wikipedia org w index php title Tupolev ANT 7 amp oldid 1184673456, wikipedia, wiki, book, books, library,
