Plane-30 and a fighter of World War II era. This unit was developed design bureau Yakovlev only two copies. In various sources, he is designated as the Yak-3 or I-26U.
Tests and fighter-30
The first plane-30 and pulled away from the surface of the airport in the late spring of 1941 years running test PY Fedrovi. The first flights were successful, and the machine shows excellent flight characteristics. The drawback was only an unreliable engine model M-105P, which is designed to fly at high altitudes. Soon the engine this modification has failed, after which he was set to a conventional engine of M-105. After that, most of the problems were solved. When testing the fighter showed excellent agility indicators, which confirmed it as a quality fighting unit. The device does not hold out on high-speed performance, especially at altitudes in 5 kilometers.
A year later it was made and the second model-30. The main difference from the first product was the bow construction because it was redesigned air intake. Tests of the second prototype took place without incident, which allowed to talk about the serial production of the aircraft. Chief designer Yakovlev persuaded senior management and put-30 on serial production only under the designation Yak-3.
Produce this unit is planned at the same time at three plants were even worked out the details and technical inventory of the aircraft. Despite this, in 41 year and it has not begun manufacturing And-30 because of the outbreak of the war, with the result that the project was shelved. All worked details altered to other machines, and finished samples were sent for scrapping.
Design features an aircraft-30 and
The plane is made under the scheme nizkoplan with all-metal construction of the fuselage. This machine was able to remove the chassis in the middle of the body during the flight. Farm machinery was produced by welding steel pipes, which created the frame of the aircraft.
The nose of the aircraft was equipped with removable hatches, made of duralumin. These caps allow easy and quick access to the main parts of the power plant. The tail lining was made of plywood, which is attached to the tubes of the farm. All wooden parts of skin were covered with canvas. The wing was made of metal and is a two-spar structure. On the wings were installed two detachable console. Slats were automatic, were installed and automated dashboards that consist of four sections. The ailerons were equipped with a metal frame wrapped with linen. The left wing aileron had in its design trimmer.
The plumage was both horizontal and vertical structure and were made of RAF-30 profile. The tail fin of the aircraft and stabilizers composed of two spars, which were made of aluminum tubing and over the sheathed blade.
chassis system has been represented by three pillars with telescopic shock absorbers liquid-gas type. Wheels to the uprights joined console mount. Release exercised chassis system that runs on compressed air. Stop the machine when planting carried out brake and brake pads.
Initially, the power plant was presented to the engine M-105PD who had a supercharger model E-100 to fly at high altitudes. During test flights this unit demonstrated its unreliability, when he was replaced by a standard engine model M-105P. On a jet exhaust nozzle installed with a fairing.
As for the weapons, it was represented by three 20-millimeter cannon type ShVAK on 360 rounds each. The structure of weapons and fighter-30 was included one machine gun caliber 7,62 mm.
|Wing area, m2||17.36|
|engine's type||1 PD M-105P|
|Power, hp||X 1 1050|
|Maximum speed km / h|
|near the ground||476|
|Practical range, km||975|
|Rate of climb, m / min||714|
|Practical ceiling, m||9000|
|Armament:||Three 20-mm cannon ShVAK (total 360 ammunition shells) and two 7.62-mm machine gun ShKAS (total 1500 ammunition cartridges)|
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