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R-5 Role Reconnaissance/Light Bomber Manufacturer Polikarpov First flight 1928 Introduced 1931 Retired 1944 Primary user Soviet Air Force Variants Polikarpov R-Z The Polikarpov R-5 was a Soviet reconnaissance bomber aircraft of the 1930s. It was the standard light bomber and reconnaissance aircraft with the Soviet Air Force for much of the 1930s, while also being used heavily as a civilian light transport, in the order of 7,000 being built in total. Contents 1 Development and design 2 Operational history 3 Variants 4 Operators 5 Specifications (1930 production) 6 See also 7 References 8 External links // Development and design The R-5 was developed by the design bureau lead by Nikolai Nikolaevich Polikarpov as a replacement for the R-1, the copy of the Airco DH.9A which served as the standard reconnaissance and light bomber aircraft with the Soviet Air Force. The prototype first flew in autumn 1928,[1] powered by an imported German BMW VI V-12 engine. It was an unequal span single bay biplane of mainly wooden construction. After extensive evaluation, the R-5 entered production in 1930, powered by Mikulin M-17s, a licence built copy of the BMW-VI, as a reconnaissance bomber.[2] Further modified versions were produced to serve as floatplanes, ground attack aircraft and civil transports. The R-5SSS, an improved reconnaissance bomber with improved streamlining, served as the basis for the Polikarpov R-Z, which succeeded the R-5 in production. Operational history The aircraft was designed by Nikolai Polikarpov in 1928. 1,000 aircraft were manufactured for Aeroflot under the designation P-5. The aircraft was also taken into the Soviet Air Force's use in 1931. They operated 5,000 aircraft under the designation R-5. The R-5 became the standard reconnaissance and attack aircraft with the Soviet Air Force, being used in large numbers, with over 100 regiments equipped with the R-5.[2] R-5s served with the Soviet Air Force and Mongolian People's Air Force during the 1939 Battle of Khalkhin Gol fought against the Japanese and, took active part in Soviet invasion of Poland (1939), and the 1939-40 Winter War against Finland, where they were known as the hermosaha ("nerve saw"). The Finns downed and captured several R-5s, but none were taken into operational service. They remained in service during the war against Germany in 1941-45, where they were mainly used as night bombers and liaison aircraft, serving until 1944.[3] R-5s were also used by the Spanish Republican Air Force in the Spanish Civil War, 31 being sold to Spain.[4] These arrived in November 1936, and were quickly deployed on combat operations, but were found to be slow and were relegated to night bombing.[5] Seven R-5s remained in good condition in March 1939. The aircraft was known as the "Natacha" in the Spanish Republican Air Force. Civil versions of the R-5 were used in large numbers, mainly with Aeroflot. They were used to carry up to 400 kg (882 lb) of freight, with many being fitted with an enlarged rear cockpit to carry two passengers. Other aircraft were fitted with enclosed cabins for passengers. P-5s could also be used to carry underwing containers capable of carrying underwing containers (or Kasseta) for freight or passengers with one P-5 carrying 16 adults, including seven in each Kasseta.[2][6] Ski equipped P-5s carrying Kasseta paid a key role in the rescue of the crew of the ice bound Soviet steamship Chelyuskin in 1934.[2] Civil R-5s remained in service until after the end of the Second World War.[3] Variants R-5 Main production reconnaissance bomber. Initial production powered by M-17B engine, M-17F from 1933. 4,914 produced.[2] R-5Sh Shturmovik. Ground attack variant. Additional gun armament. R-5a Twin float, reconnaissance seaplane. Also known as MR-5, MR-5bis or Samolet 10. 111 built 1934-35.[2] R-5D Long-range version. One built. R-5 Jumo Experimental engine test-bed, fitted with an enlarged rear cockpit to accommodate two observers. Also known as the ED-1. R-5M-34 This experimental version was fitted with a M-34 engine. R-5T Single seat torpedo bomber with divided undercarriage to allow torpedo to be carried under fuselage. R5-SSS Improved version with reduced drag and increased gun armament. Also known simply as SSS. Increased performance. Over 100 built 1935-36.[1] P-5 Light transport version for Aeroflot.M-17B engine. Approximately 1000 produced by 1940.[2] P-5a Twin float version of P-5 - built in small numbers. R-5L Limuzin. Passenger version with cabin for two passengers. Built in small numbers in 1931. P-5L Revised passenger transport. Several built in 1933. PR-5 Final modernised transport version. New semi-monocoque fuselage with enclosed cabin for four passengers. 210 converted for use by Aeroflot. PR-12 Passenger monoplane based on PR-5. One built in 1938. ARK-5 Arctic exploration version with enclosed, heated cockpit and streamlined containers for payload faired into lower wing and sides of fuselage. Two built. LSh Legkii Shtumovik. Light armoured attack aircraft - Modified design by Grigorovich. One built 1930. TSh-1 Tyazheli Shtumovik. Heavily armoured ground attack aircraft (6 mm armour) based on R-5, again by Grigorovich. Three prototypes. TSh-2 Refined derivative of Tsh-1 with new lower wings. Ten aircraft built. ShON Light attack version with folding wings built for counter insurgency operations against Basmachi rebels in Central Asia. 30 ordered. Operators  Iran Spanish Republic Spanish Republican Air Force  Mongolia Mongolian People's Air Force  Turkey  Soviet Union Aeroflot Soviet Air Force Specifications (1930 production) Data from The Osprey Encyclopedia of Russian Aircraft from 1875 - 1995 [2] General characteristics Crew: 2 Length: 10.56 m (34 ft 7½ in) Wingspan: 15.5 m (50 ft 10¼ in) Height: 3.25 m [7] (10 ft 8 in) Wing area: 50.2m² (540 ft²) Empty weight: 1,969 kg (4,341 lb) Loaded weight: 3,247 kg (7,158 lb) Powerplant: 1× Mikulin M-17B water cooled V-12, 507 kW (680 hp) Performance Maximum speed: 228 km/h (123 kn, 142 mph) Range: 800 km (432 nmi, 497 mi) Service ceiling: 6,400 m (21,000 ft) Wing loading: 64.7 kg/m² (13.3 lb/ft²) Power/mass: 0.16 kW/kg (0.095 hp/lb) Climb to 1000 m (3,300 ft): 2.1 min Armament 1 × fixed forward firing PV-1 machine gun and 1 × DA machine gun in rear cockpit 250 kg (550 lb) bombs on bomb racks See also Related development Polikarpov R-Z Comparable aircraft Hawker Hart Curtiss Falcon Related lists List of military aircraft of the Soviet Union References ^ a b Donald, David (Editor) (1997). The Encyclopedia of World Aircraft. Aerospace Publishing. ISBN 1-85605-375-X.  ^ a b c d e f g h Gunston, Bill (1995). The Osprey Encyclopedia of Russian Aircraft from 1875 - 1995. London: Osprey Aerospace. ISBN 1-85532-405-9.  ^ a b "WWW.AVIATION.RU". http://www.aviation.ru/Po/. Retrieved 2007-07-29.  ^ "Virtual Aircraft Museum". http://avia.russian.ee/air/russia/pol_r-5.php. Retrieved 2007-07-29.  ^ "República - Aviones de bombardeo" (in Spanish). http://www.sbhac.net/Republica/Fuerzas/Armas/AvBomb/AvBomb.htm. Retrieved 2007-07-29.  ^ "People Pods: Early Soviet Experiments". http://www.ctrl-c.liu.se/misc/ram/R-5-pods.html. Retrieved 2007-07-29.  ^ Angelucci, Enzo (1981). World Encyclopedia of Military Aircraft. London: Jane's Publishing. ISBN 0-7106-0148-4.  External links v • d • e Aircraft produced by Polikarpov Bombers TB-2 · SPB (D) · NB Fighters/Interceptors I-1 · DI-1 · I-3 · DI-2 · I-6 · I-5 · I-15 · I-16 · I-15bis/I-152 · I-153 · I-17 · VIT-1 · VIT-2 · I-180 · I-185 · I-190 · TIS · ITP Reconnaissance/Attack R-1 · R-2 · R-4 · R-5 · SSS · R-Z · Ivanov Airliners/Transports PM-1 · P-5 · P-Z · BDP · MP Trainers U-2/Po-2 · P-2 v • d • e Lists relating to aviation General Timeline of aviation · Aircraft (manufacturers) · Aircraft engines (manufacturers) · Rotorcraft (manufacturers) · Airports · Airlines (defunct) · Civil authorities · Museums Military Air forces · Aircraft weapons · Missiles · Unmanned aerial vehicles (UAVs) · Experimental aircraft Accidents/incidents General · Military · Commercial (airliners) · Deaths Records Airspeed · Distance · Altitude · Endurance · Most-produced aircraft v • d • e Soviet aircraft during WWII Fighters I-15 · I-153 · I-16 · MiG-1 · МiG-3 · Yak-1 · Yak-3 · Yak-7 · Yak-9 · LaGG-3 · La-5 · La-7 · Pe-3 Bombers Su-2 · Yak-4 · SB · Yer-2 · Pе-2 · Тu-2 · Il-4 · Ar-2 · ТB-3 · Pе-8 Sturmoviks Il-2 · Il-10 Trainer Aircraft UT-1 · UT-2 Transport aircraft and gliders Li-2 · Sh-2 · А-7 · G-11 · КC-20 Reconnaissance Aircraft R-5 · R-10(KhAI-5) · Po-2 · MBR-2 · Be-4 · ZH-7 Prototypes I-28 (Yak-5) · I-30 · Polikarpov I-180 · Polikarpov I-185 · I-250 · ITP · Polikarpov TIS · IS-1 · Zveno · BI-1 · АNT-58