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15-499: While Sukhoi was perfecting the light Sukhoi Su-6 attack aircraft, the OKB also developed the massive, heavily armed and armored Su-8. In May 1942, the Soviet military commanders had realized the need for an aircraft to support ground offensives operating at a great distance from their airfields, and capable of striking enemy lines of communication to the rear of the front lines. Design work

30-609: The OKB had to be evacuated after the start of the Great Patriotic War . It was armed with two 23 mm cannon, four machine guns and ten rails for aerial rockets. Test results were very favorable, and the AFRA Scientific Research Institute recommended the acquisition of a small production batch for testing under front-line conditions. A draft resolution for the production of 25 aircraft was prepared, however unfortunately for Sukhoi, it

45-571: The Il-2, although with a considerably smaller payload. When the troublesome M-71 was canceled, Sukhoi was directed to utilize the liquid-cooled Mikulin AM-42 engine. When flight tests began on 22 February 1944, the re-engined Su-6 proved inferior to the Ilyushin Il-10 using the same engine thanks to the additional 250 kg (551 lb) of armor required to protect the liquid-cooled engine and

60-522: The end of the year. Flight testing was delayed due to unavailability of Shvetsov M-71 engines. Although testing was successful, the Su-8 was not approved for mass production. By this time, the Soviet armies had reached the borders of Nazi Germany, and the need for an aircraft with a longer range than the existing Ilyushin Il-2 was no longer a priority. An attempt to re-engine the aircraft with Mikulin AM-42 engines did not see further development. The Su-8

75-792: The establishment of the USSR State Prize, the diplomas and badges of the recipients of Stalin Prize were changed to that of USSR State Prize. In 1944 and 1945, the last two years of the Second World War , the award ceremonies for the Stalin Prize were not held. Instead, in 1946 the ceremony was held twice: in January for the works created in 1943–1944 and in June for the works of 1945. USSR State Prize of 1st, 2nd and 3rd degrees

90-528: The lower power output of the AM-42 compared with M-71F. Although the Su-6 never entered production, in 1943 Pavel Sukhoi was awarded the Stalin Prize of the 1st Degree for the development of the aircraft. As an experiment, the basic single-seat Su-6 design was converted into a mixed-power high-altitude interceptor named Su-7 (the name was reused in the 1950s for a supersonic fighter-bomber ). The armor

105-736: The single-seat Su-6 prototype. Development of the Su-6 began in 1939, when the Sukhoi design bureau began work on a single-seat armoured ground-attack aircraft. An order for two prototypes was placed on 4 March 1940, and on 1 March 1941 flight testing of the first prototype was begun by test pilot A.I. Kokin. The flight tests indicated that the Su-6 was superior to the Ilyushin Il-2 in nearly all performance categories, however its engine exceeded its age limit before testing could be completed, and no further Shvetsov M-71 engines were available. The second prototype flew only in January 1942 because

120-408: The weight of the armour shell on an Ilyushin Il-2 . Data from Istoriia konstruktskii samoletov v SSSR, 1938-1950, and OKB Sukhoi General characteristics Performance Armament Sukhoi Su-6 The Sukhoi Su-6 was a Soviet ground-attack aircraft developed during World War II . The mixed-power (rocket and piston engines) high-altitude interceptor Su-7 was based on

135-550: Was awarded annually to individuals in the fields of science, mathematics, literature, arts, and architecture to honor the most prominent achievements which either advanced the Soviet Union or the cause of socialism. Often the prize was awarded to specific works rather than to individuals. Each constituent Soviet republic (SSR) or (SFSR) and autonomous republic (ASSR) also had a State Prize (or Stalin Prize). The Stalin Prize

150-654: Was completed in 1944. Test flights demonstrated a top speed of 510 km/h (275 kn, 315 mph) at 12,000 m (39,370 ft) without the rocket motor, and 705 km/h (380 kn, 440 mph) with the rocket. In 1945, the rocket motor exploded during flight testing, killing the pilot and destroying the aircraft. Data from OKB Sukhoi, General characteristics Performance Armament Aircraft of comparable role, configuration, and era Related lists USSR State Prize The USSR State Prize (Russian: Государственная премия СССР , romanized:  Gosudarstvennaya premiya SSSR )

165-730: Was conducted at an accelerated pace, with work on the airframe commencing from August 1942, even before the drawings were completed on 20 September 1942. Two prototypes were completed at Plant Number 19 in Molotov in 1943, the first in May and the second in August, with work hampered by the Nazi invasion and need to evacuate the Sukhoi Design Bureau to Tushino . The first flight test was not made until 11 March 1944, and testing continued to

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180-454: Was never officially issued. Meanwhile, combat experience with single-seat Il-2s demonstrated the need for a rear gunner. The third prototype was therefore designed with the second crewman at the expense of bomb load (decreased from 400 kg/881 lb to 200 kg/440 lb), and was fitted with a more powerful M-71F engine. Official tests revealed that the two-seat Su-6 had a 100 km/h (54 kn, 62 mph) greater top speed than

195-412: Was of mixed construction. The cockpit area was armoured, with an aluminum mid-fuselage and a wooden monocoque tail. The wings were of steel and aluminum construction with plywood outer sections. The twin rudders were of all-metal construction. In addition to the cockpit, the engines, fuel tanks and oil coolers were fully armoured, with a total armour weight of 1,680 kg (3,705 lb), more than twice

210-506: Was removed and the fuselage was of all-metal construction. Power came from a Shvetsov ASh-82 FN piston engine with two TK-3 turbochargers in the nose and a Glushko RD-1 -KhZ rocket engine in the tail. The piston engine produced 1,380 kW (1,850 hp), while the rocket engine utilized kerosene and nitric acid for fuel and generated 2.9 kN (600 lbf) of thrust for up to 4 minutes. Armament consisted of three 20 mm ShVAK cannon with 370 rounds of ammunition. The sole Su-7

225-602: Was the Soviet Union 's state honor. It was established on 9 September 1966. After the dissolution of the Soviet Union, the prize was followed up by the State Prize of the Russian Federation . The State Stalin Prize ( Государственная Сталинская премия , Gosudarstvennaya Stalinskaya premiya ), usually called the Stalin Prize , existed from 1941 to 1956. It essentially played the same role; therefore upon

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