Soviet designers developed a heavy cargo aircraft AN-22 model, which was equipped with turboprop engines. The literature often found his second name "Antey", and NATO Codification he referred to as the Cock, which means "rooster". This unit was the first widebody aircraft of the USSR, which could lift the load in 60 tons. At the time of creating it was a record of all cargo aircraft in the world. It was the exact same very large lorry in the world with turboprop engines. The first An-22 flew in 1965 year. Total mass of the structure was made 68 machines of this type. At the moment it is being used on the territory of Ukraine and a member of the Air Force of the Russian Federation.
History of the AN-22
An aircraft-22 project is the brainchild of the Antonov design bureau, chief designer of this development has been appointed AY Belolipetskii. In the initial stages of designing the machine designated as a "product 100». The first study was initiated to 1960 years.
In the development of the cargo compartment designers take into account the size of the military and civilian equipment, which could be transported according to the liner. The cargo compartment is initially calculated on transportation of cargoes weighing up to 50 tons. To reduce roll dvuhkilevoe unit was involved in the turns. It was also considered the possibility of landing on airfields with unpaved. For this was worked out multiwheel chassis system, which was equipped with pneumatics with low pressure.
The device is planned to be equipped with four-engine turboprop type with the designation SC-12MV. These units were equipped with screws Model AB-90, which have a diameter in 6,2 meters.
In the middle of summer 61 was held session of the commission, which approved the draft layout of the AN-22. manufacturing of prototype was launched two years later the machine, which was completed in the early summer of the year 1964. Flight testing of the device was launched in August 18 64 years, it is the time machine and dubbed as "Antaeus." The first AN-22 made separation from the runway in February 27 65 years at the Kiev airport. The machine is controlled crew of six and a test engineer. The general public "Antey" was presented to the world air show in Le Bourget.
Serial production of the AN-22 engaged in Tashkent aircraft plant. In the Air Force first machines began to arrive at the end of the year 1969. A full-scale manufacturer engaged to 1976 years. During all this time 68 machines of this class were produced, among which there were many modifications to perform certain tasks. According to official data, in the year 2010 7 were in operation of machines of this type, and even 18 were saved.
Features An-22 constructions
The machine is made by vysokoplana scheme with four turboprop engines. The fuselage is equipped with a two-keel fins and tail section has a large cargo door.
The housing is made of stringers, beams and frames, which are integrated into a single structure.
The whole plane is divided into four sections:
The nose part is completely sealed, it is cockpit, which consists of two decks. In the lower compartment cab is a place navigator, behind him are two passenger cockpit. The upper part of the cabin is designed for the rest of the crew of the machine. The upper deck also has three cockpit seating. When emergency crews can carry out the evacuation through a special sloping tunnel.
Average unit department presented the cargo cabin, which is equipped with a grooved floor, made from durable titanium alloy. The aircraft has a ramp that allows unloading works with both the land and from the platform.
The tail portion is formed in a sealed circuit, it includes the cargo hatch and the end of the cargo hold. This part of the unit ends a ramp, which consists of two flaps.
The last section of the body is the ending of the fuselage.
The wings are made on the caisson type and have the shape of a trapezoid. The wing consists of seven separate components, namely: the center section, two sections and four detachable element of the middle part. At the rear edge of the installed ailerons and servo tab. Also the rear part of the wing has over its entire length a slit type flaps. On the middle part of the wing mounted engines.
The feathering of the tail has a cantilever structure of the circuit and is made up of a stabilizer and elevator. It also has two keel with rudders flight. The structure consists of two keel spar and ribs to the panel. All rudders are made of the control of the spar and the servo.
Chassis System AN-22 plane is represented by three pillars, among which are the two main and one nose-driven rack. The structure of the main pillars include three racks with dual wheels, which have a braking system and damping system. Racks have a lever diagram of the structure of the suspension. Release racks provide the hydraulic system, hydraulic cylinders provided. On the nose wheel and two-wheel brake set. The peculiarity of the chassis system - the ability to produce racks simultaneously and alternately. All presented pneumatics wheels with low pressure.
The power plant "Anthea" presented four-engine turboprop type, which is denoted as NK-12MA. These motors drive the huge screws brand AB-90. Each engine delivers power on takeoff in 15 thousand horsepower. Due to the sophisticated design of the wing and the power plant has been obtained 45% airflow wing screws. An-22 equipped with huge soft fuel tanks, which could fit in 127 thousand liters of fuel. For oil systems were installed on tanks 200 liters, wherein each of the motors.
On the basis of the standard An-22 was developed a number of modifications that have been made taking into account the wishes of the customer.
|Aircraft Length m||57.92|
|Wing area, m2||345.0|
|Internal fuel, kg||43000|
|engine's type||4 theater KKBM (Kuznetsov) NK 12MA|
|Power ehp||X 4 15000|
|Maximum speed km / h||760|
|Cruising speed, km / h||560|
|Practical range, km||10950|
|Practical ceiling, m||7500|
|Payload:||290 or 150 soldiers parachutists or ed.tyazheloy 4 60000-technology or 80000 kg of cargo|
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