TedD60 Registered User Thread OP

Discussion Kamov A7 – 3A autogyro



from



In May 1931 a moscav’s airport held a presentation for the sowiet government of autogiro KASKR II, designed by a young constructor Kamova and Skrzyńskiego. The show of aeroplane flights made an impression on soviet military and soon after, the constructors receieved an instruction to continuate the production of further versions of the machine.



... The militaries demands were specific and similar to the aeroplane recognized in those Times (R-3 and R-5). That meant that A-7(that was the code of CAGI’s project) should have a lifting capacity of 750 kg (2-2,5 times more than the earlier autogiro), be able to transfer smaller bombs, be equipped with a camera as well as a radio station, its armament should be consisted of 3 machine guns: two in the shotters position and one in the front synchronized with the propellers.



A-7 became the first armed autogiro so you can say that it is the ancestor of modern fighters. Because of the unknown technology of navigating the impeller in the earlier years, Kamov projected A-7 as a „winged autogiro”. Navigating it was similar to navigating a classic aeroplane.



Aircraft A-7 was propelled by radial engine M-22 cooling air, by a Townend ring. The impeller had three rotor blades, each one was made from a steel pipes, plywood and wood, the thatch of the back parts of the rotor blades were made from canvas. During the start the impeller was propelled by the help of a transmission through the autogiro’s engine, during the flight the propulsion of the impeller was set off and the impeller rotated with the speed of about 200 rotates/minute. The body of A-7 had 3 sections: engine, pilot’s cabins and shooter’s cabin. The body had a steel construction with duralumin thatch. The wings of A-7 were made from wood with a canvas thatch. The wings ends as well as the rotor blades could have been folder during transport.

... In years 1939-1940 A-7 passed a combat christening in Finland, where it was used to coordinate artillery fire. Later in 1941 it supported the artillery in a battle near Elnei, but the small speed and not possible escort from the soviet fighters made A-7 an easy loot for Germains. That is why in 1942 Autogiro worked in night operations: supporting military groups and supplying guerrilla’s with cargo.



TECHNICAL DATA:

Crew…………………2 people

Height………………..3,88m

Span………………….10,4 m

Self mass……………..1553 kg

Total mass……………2390 kg

Max speed……………218 km/h

Min speed…………….46 km/h

Ceiling………………..4760 m

Time of flight…………2,5 h

Arms:………………….1km 7,62 mm















This is NOT a little a/c!



















The first armed autogryo to see combat action.from http://www.orlik-models.pl/englishversion/kamov.htm In May 1931 a moscav’s airport held a presentation for the sowiet government of autogiro KASKR II, designed by a young constructor Kamova and Skrzyńskiego. The show of aeroplane flights made an impression on soviet military and soon after, the constructors receieved an instruction to continuate the production of further versions of the machine.... The militaries demands were specific and similar to the aeroplane recognized in those Times (R-3 and R-5). That meant that A-7(that was the code of CAGI’s project) should have a lifting capacity of 750 kg (2-2,5 times more than the earlier autogiro), be able to transfer smaller bombs, be equipped with a camera as well as a radio station, its armament should be consisted of 3 machine guns: two in the shotters position and one in the front synchronized with the propellers.A-7 became the first armed autogiro so you can say that it is the ancestor of modern fighters. Because of the unknown technology of navigating the impeller in the earlier years, Kamov projected A-7 as a „winged autogiro”. Navigating it was similar to navigating a classic aeroplane.Aircraft A-7 was propelled by radial engine M-22 cooling air, by a Townend ring. The impeller had three rotor blades, each one was made from a steel pipes, plywood and wood, the thatch of the back parts of the rotor blades were made from canvas. During the start the impeller was propelled by the help of a transmission through the autogiro’s engine, during the flight the propulsion of the impeller was set off and the impeller rotated with the speed of about 200 rotates/minute. The body of A-7 had 3 sections: engine, pilot’s cabins and shooter’s cabin. The body had a steel construction with duralumin thatch. The wings of A-7 were made from wood with a canvas thatch. The wings ends as well as the rotor blades could have been folder during transport.... In years 1939-1940 A-7 passed a combat christening in Finland, where it was used to coordinate artillery fire. Later in 1941 it supported the artillery in a battle near Elnei, but the small speed and not possible escort from the soviet fighters made A-7 an easy loot for Germains. That is why in 1942 Autogiro worked in night operations: supporting military groups and supplying guerrilla’s with cargo.TECHNICAL DATA:Crew…………………2 peopleHeight………………..3,88mSpan………………….10,4 mSelf mass……………..1553 kgTotal mass……………2390 kgMax speed……………218 km/hMin speed…………….46 km/hCeiling………………..4760 mTime of flight…………2,5 hArms:………………….1km 7,62 mmThis is NOT a little a/c!