MiG-9, which according to NATO classification called Type 1, - the first turbojet Soviet fighter, raised in the air. The first flight of the machine took 24.04.1946. During the period of mass production with 1946 1948 for years. It was released 602 aircraft.
At the end of the Second World War, the Soviet Union began to intensify their work towards the creation of reactive aircraft. Just four EDO (Yakovlev, Sukhoi, Mikoyan and Lavochkin) was entrusted with the task of designing jet fighters. Due to the fact that Soviet industry before the time was not yet released its own jet engine, the basis for the creation of the first jet aircraft became captured German BMW-003A and "Junkers" Jumo-004. At that time, Germany, Britain and the United States already had a full-scale production of jet technology and actively exploit it.
For this reason, Soviet designers were given the task not just to build a jet fighter, and do it as soon as possible in order to reduce the gap in the development of the world leaders in this field.
From OKB Mikoyan were offered just two of the project, equipped with engines BMW 003A. The first draft (I-260) engines mounted under the wings, the layout was similar to the Me-262. In the second project, called AND-300, it was Reda pattern layout, and power plant was located in the fuselage.
During the research it was decided to leave the project and second-300, and from I-260 refused. And It-300 in mass production has gained the name of MiG-9 and was put into service. An interesting fact is that this plane was hoisted into the air for a few hours before the second jet machines Yak-15, thus becoming the first Soviet jet fighter taking off into the sky.
MiG-9 with Yak and Yak-15-17 fighters began to transition from the piston to the samples of the Second World transonic jet MiG-15.
The design of the MiG-9
MiG-9 - this single-seat fighter, which has all-metal construction and power plant comprising two turbojet engines. The scheme is a monoplane with retractable tricycle landing gear and a mid-wing.
The fuselage is made by the type of semi-monocoque and is running smooth lining. As part of the power frame bow are 15 4 spar frames and variable section, stringers and set two beams for fixing the front landing gear and weapons installations. As part of the tail section power carcass frames are 20, 4 spar, 2 ribs for fixing the main landing gear and a set of stringers. Docking the forward fuselage to the tail was performed by eight fittings.
The nose of the two tunnels is that the air is supplied to the compressor motor from the frontal air intake. The channels have an elliptical cross section and held on the sides of the fuselage skin.
The structure of the power frame bow included air tunnels.
Between frames number 6 11 number and placed the cockpit. Canopy has a streamlined shape and consisted of a movable part, which is shifted in three directions, and the visor.
The wing had a trapezoidal shape and the relative thickness of 9% across the span. As part of the framework of the power of the wing spar were 2, 21 rib and a set of stringers. wing profile has been combined: between the ribs №1-№3 - malonesuschy TsAGI A-1-10, between №3-№6 - transition and №6-№21 - carrying TsAGI 1-In-10. By using such a combination of minimizing the risk of a spin during flight at high angle of attack. Wing was completed aileron type "Fries" and the flaps of the TsAGI. Angles aileron deflection - 22,5 ° up and down 14,5 °, the angles of deflection flaps on takeoff - 22,5 °, landing - 50 °.
The tail unit of all-metal cantilever design has vysokoraspolozhenny stabilizer.
tricycle landing gear design on the front desk. The main landing gear are swinging poluvilku and remote shock. Front support comes with a hydraulic damper and a swinging fork. The chassis has oil-hydraulic cushioning. On the main pillars fitted odnotormoznye wheel whose size - 660 160 x, Bow Front tire had non-braking (x 480 200). landing gear extension and retraction system air.
As part of the power plant were two turbojet engine RD-20, 800 have cravings for each kg. The original MiG-9 fighters equipped with engines with A-1 10 resource hours, which were obtained as trophies and processed in the USSR represented BMW-003 engines. Later powerplant replaced the engines RD-20 25 from a resource on 50 hours and issued at the Kazan factory number 16, and further RD-20B, available resources 75 hours.
Location engines got parallel with respect to the bottom of the fuselage. Start power plant was due to start-up of motors, "Riedel". Since the generator is fixed on the left engine start-advised to spend without him. As a start-up fuel used petrol-B or B-78 70, the total reserves of 12 l. The fuel tank had a capacity starting engines 2 L and was placed on the right motor.
Cones engine nozzles can be placed in four positions: "start", "take-off", "flight" and "high-speed flight." cone-wire control system.
The fuselage was protected from the hot gases through the use of a shield. It had a ridge that divided gas streams. Start crest was №19 on a frame, and to the frame №34 He ended by presenting to the frame №29 shield. Lining the protective device was made of duralumin sheet 0,5 mm thick, and the outer - of heat-resistant steel 1,2 mm. In the field of protective shield between the outer and inner lining gap left 15 mm, serving for the passage of cooling air.
The structure of the fuel system consisted of four six fuselage and wing tanks, the total capacity of which reached 1595 l. All tanks, except the number 4 the tank, have a soft design. Motors fed with kerosene, which is fed from the tank number 2.
Fuel tanks connected so as to distribute the fuel evenly from both sides, providing alignment during aircraft flight.
|Wing area, m2||18.20|
|engine's type||2-20 RD RD|
|Thrust, kgf||X 2 800|
|Maximum speed, km / h|
|near the ground||864|
|Practical range, km||800|
|Rate of climb, m / s||806|
|Practical ceiling, m||13000|
|Armament:||one 37-mm gun H-37 (40 shells) and|
|two 23-23 mm NA-gun (160 shells).|
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