Mi-2 is the first light domestic helicopter with TBG, designed specifically for civilian use to replace the Mi-1 helicopter. The order for its development bureau received in May 1960 city, and in January 1961 g. helicopter mock-up was presented, the designation B-2, which it was decided to construct two embodiments: passenger and agricultural; their first flights, respectively, held in September 1961. and in December 1961.
Mi-2 – video
After lengthy public trials, in which the high efficiency of the Mi-2 helicopters for agricultural work has been confirmed, 20 September 1963. it was decided to mass production of the Mi-2, which in January 1964. it was considered appropriate to perform in Poland for the helicopter plant PZL-Swidnik, where the license was transferred to series production. The first helicopter built in Poland Mi-2 made its first flight 4 December 1965; serial production continued until 1992, all were built more 5250 Mi-2 helicopters for civil and military use, most of which was exported to many countries (Bulgaria, Hungary, Germany, Egypt, Iraq, Libya, Czechoslovakia, North Korea and others.).
As a replacement for the Mi-1, new helicopter greatly surpasses it in flight speed and capacity, a powerplant of two GTE provided him with excellence and to foreign helicopters of the same class, which at that time produced only single-engined. Thanks to good flight and performance characteristics of Mi-2 helicopters are widely used in helicopter sports competitions; helicopters Mi-2 1963 and 1965 years two international speed record set 253.818 and 269.38km / h on the basis of 100km.
Design
Helicopter single-rotor scheme with tail rotor, two gas turbine engines and tricycle landing gear.
Fuselage
Semi-monocoque structure consists of three parts: bow with crew cabin, a central passenger cabin and a tail boom with a controllable stabilizer scale and area 1.85m 0.7 m2.
Cabin Mi-2
One-double, in most embodiments, a pilot in the left seat, in a training and pilot trainee embodiment are juxtaposed, dual control. In the passenger cabin dimensions 2.27 x 1.2 h 1.4m, equipped with air conditioning, placed 8 passengers on two triple seats, backs facing each other on the flight, and two seats on the starboard side. In the carriage of cargo passenger seat can be removed. In the ambulance version, the cab includes mounting to accommodate four patients on stretchers to the nurse or two on stretchers and two seats on; access to the cockpit through two doors that open on hinges, and in the passenger cabin - through the large door sizes 1.1 x 0.78m on the port side.
Chassis
tricycle, fixed landing, the main support for uniforms, with oil-air shock absorbers and brake wheels sizes 600 x 180mm pressure 0.43MPa and, nose support self-orienting, twin wheel size 400 x 125mm pressure 0.34MPa and. Installation of metal skis.
main rotor
trilobate, with hinged blades and hydraulic dampers. all-metal blades, a rectangular shape in plan, spar and with extruded profile and the chord NACA 230-12M 0.4m.
The tail rotor
diameter 2.7m, bilobed, all-metal blades with rectangular planform. The blades and tail rotor provided with an electrical deicing system. In the tail rotor hub for the first time in practice of domestic helicopter used torsion bars.
Power point
It consists of two turboshaft engines GTD-350 at takeoff power 298kVt, developed under the leadership of S.P.Izotova and produced under license in Poland. TBG mounted near the top of the fuselage in front gearbox with double intake and projecting laterally general nozzles with fan shroud for cooling engines and gear masporadiatora.
Fuel system
It includes a fuel tank under the cabin floor 600l, possible installation of two additional tanks on the sides of the fuselage with a capacity of 238l; oil system composed of the oil tank and the oil cooler 25 l capacity with a fan for cooling.
Transmission
It consists of a three-stage main gearbox BR-2 with freewheel, the intermediate gear and the tail rotor gearbox. Main gearbox has a gear ratio to the shaft of the rotor 1:24.6, tail rotor gearbox - 1:4.16m.
Control system
Busternaya, with hydraulic channels in the longitudinal and lateral control and management of collective pitch and spring loading mechanism, It is driven by a hydraulic system with a working pressure 6.5MPa and performance 7.5 l / min.
electrical system
AC is powered by two starter-generators STG-W power of 3kW, driven by motors, and three-phase AC power generator 16kW and 208V voltage. DC system is powered by two lead-acid battery capacity 26 A * h.
Equipment
standard, It includes CB- and HF radio, gyro-compass, radiokompas, altimeter and SPU. On a number of military options at the bow and on the tail boom are warning receivers of radar illumination.
Agricultural spraying system embodiment is equipped with the tanks of chemicals on the sides of the fuselage a total capacity of 1000L for the liquid chemicals and the spray boom length 14m, with 128 nozzles, providing spraying chemicals stripe width 40-45m or spray dry chemicals total weight 750 kg, contained in two containers with sprayers.
SAR embodiment is provided with an electrical winch hoisting capacity 120kg, and a transport option - the suspension hook for external loads up to 800kg. In the embodiment of environmental control equipment installed thermal firm “ASA”.
modifications
Mi-2A – Mi-2A is a modernized version of Mi-2. It is built on a single-rotor scheme with a three-blade main rotor and two-blade tail rotor. Instead two turboshaft engines engine GTD-350 helicopter Mi-2A used AI-450, designed in Ukrainian Design Bureau "Progress", или «Arrius-2MI», developed "Turbomeca" French firm. The installation of these engines aircraft performance characteristics were markedly improved helicopter. new engines, in comparison with the GTD-350, have a lower specific fuel consumption, longer service life and reliability, lower noise level and the emission of pollutant. In connection with the installation of the new engines of the helicopter transmission has been changed. Installed new gear - main GR-2A and combining OR-2A, and a coupling shaft for transmitting torque from the OR to GR-2A-2A. transmission shafts, intermediate and tail gearboxes not changed. The helicopter has a modern instrumentation and radio: KB radio station "Crystal", VHF "Yurok", automatic direction finder, radio altimeter, intercom, Jets transponder SB-94, tape P-503B, GPS-195 satellite navigation system, vehicle device registration BUR-SL1. electro-, radio- and instrumentation allows the use of a helicopter in bad weather conditions, any time of the day. Also, the fuel system has been improved, oil system, cooling system, fire protection system, electrical power system. Others - remain unchanged.
Mi-2M – Mi-2, modernized "Rostvertol", with two turboshaft engines GTD-350P power 450 l. from. (331 kW). Produced in four versions: agricultural, trainer and a helicopter for aerial photography.
We are 2MSB – Mi-2, modernized Ukrainian company "Motor Sich", fitted with engines AI-450M and an advanced control system. Production mastered in 2011 year.
We are 2MSB-B – Mi-2, modernized Ukrainian company "Motor Sich", fitted with engines AI-450B and an improved control system.
We-2P – We-2P (Mi-2R, Polish. passenger) - passenger version of the helicopter. It differs from the transport Mi-2T lack of cargo winch and the presence of the passenger cabin. Another variant of this helicopter was the Mi-2P "Salon", service with enhanced comfort for the transportation of VIPs.
We-2R – We-2R (Mi-2R, Polish. distinctive) - reconnaissance version, intended to conduct tactical photo-reconnaissance. It can also perform routine and challenging terrain photographing. In the prototype of the Mi-2P was a board room 0607 (time. № 570607127). Besides, More was created reconnaissance version with the designation Mi-2pc (Mi-2RS).
Mi-2RL – Search and rescue helicopter, developed by the Polish company PZL Swidnik based multipurpose helicopter Mil Mi-2. Mi-2RL (Mi-2RL), ie. rescue, glacial (ratovnychyy, lendyvy) - rescue, land) - Option to save the crews, left the aircraft emergency. Equipped with on-board winch increased lift capacity, rescue and medical equipment, and additional spotlights, flares and search radio compass.
We are 2RM – Deck search-and-rescue version (Mi-2RM, Polish. sea rescue, "Marine life"). Equipped with a load capacity of electric winch 120 kg. External feature of this modification is a large cylindrical body gearmotor winches, located above the passenger cabin door, and a bracket for transporting containers discharged with inflatable liferafts portside. Mi-2RM used by the Polish Navy and the German Democratic Republic; there he is sometimes referred to as Mi-2 See (Mi-2 "sea"). Polish cars had a special orange, white and green color, but at the end of the 1990s, some of the Mi-2RM were painted in red, white and blue, such as helicopters, the US Coast Guard.
Mi-2RHR – helicopter himrazvedki, or "Mi-2 chemical" (Chemical Mi-2), for conducting radiation-chemical reconnaissance, To this end, it established a special equipment for sampling and analysis of air samples. In the USSR, this machine called the Mi-2RHR. There was also one more modification of the helicopter - the Mi-2X (Mi-2Ch) - option for setting a smokescreen for the purpose of camouflage of ground troops; means setting dymzaves in the Soviet army traditionally been the himvoyskam. To the exhaust pipe of this engine attached to the helicopter downward long tube, much of the modified external fuel tanks, placed on each side of the fuselage, made diesel fuel supply. As its evaporation into the hot exhaust gases generated dense white smoke.
Mi-2S – sanitary modification (Mi-2S, Polish. sanitary). Designed to carry up to four patients on stretchers in two circles on both sides of the fuselage. Also, a helicopter has containers with oxygen tanks, disinfectants and a bag with medicines. The passenger cabin has a universal lifting seat for an accompanying paramedic. Air ambulances Poland (Air Rescue) He won the first two Mi-2C 25 August 1972 of the year; they were used in Warsaw and Katowice. To 13 October 1981 , the air ambulance was delivered more 49 helicopters, which completely replaced the SM-1 and SM-2.
Mi-2T – Transport modification Mi-2. It was developed by the Polish company «PZL Świdnik». Mi-2T (Mi-2T, Polish. carrying) It is the basic transport helicopter, for the carriage of eight people or cargo. In the central part of the fuselage are arranged back to back two triple sofa. Another passenger is located next to the pilot, and the other - on the right side of the cargo compartment (across from the door). Over the cargo compartment door has a winch, able to raise 100-200 kg of cargo. The helicopter can carry a load of up to 700 kg in the cargo compartment or to 800 kg external load.
Mi-2U – The training helicopter, developed by the Polish company PZL Swidnik based multipurpose helicopter Mil Mi-2. Mi-2U - trainer version with paired control. Need to say, Mi-2U is a purely "our" symbol; Poles as this option is called Mi-2 dwuster (with dual controls). The instructor is sitting on the right seat, which is offset backwards in relation to the chair of the cadet, the instructor could see better action cadet. Column with steering rods, located between pilots, located remote to simulate faults in flight.
We are 2URP
We are 2URP – option, designed for fire support troops, разработка "PZL Swidnik». We are 2URP (Mi-2URP, Polish. armed with antitank missiles, "Armed with anti-tank missiles") It is equipped with a gun NS-23km, two machine guns RPK and four anti-tank guided missiles 9M14M "Baby" on the external sling. ATGM are induced on the wire and controlled by the operator from the control panel, which is located on the dashboard. Operator's seat placed to the right of the pilot.
PZL Kania – Polish modernized version of Mi-2. Equipped with two turbine engines Allison 250-S20V power 426 l. from. (314 kW). In this modification, the increased dimensions of the cockpit, improved equipment, improved flight characteristics. Weight increased to 3550 kg. Offered in embodiments: transport, agricultural, sanitary, patrol, rescue and reconnaissance. produced from 1986 by 2006 years, it was released 19 pcs.
The performance characteristics of Mi-2
– Get Started: 1965 year
– Total built: 5400
Crew Mi-2
– 1 human
Capacity Mi-2
– 10 passengers or 8 soldier (military option)
Overall dimensions of the Mi-2
– The diameter of the rotor: 14,50 m
– The diameter of the tail rotor: 2,70 m
– Length with rotating. screws: 17,42 m
– fuselage length: 11,40 m
– The width of the fuselage: 3,25 m
– Height with rot. screws: 3,70 m
All Mi-2
– empty weight: 2372 kg
– Normal takeoff weight: 3500 kg
– Maximum takeoff weight: 3550(the Air Force 3700) kg
Motors Mi-2
– Power point: 2 TBG Klimov GTD-350
– Power: 2× 400. from.
Speed Mi-2
– Cruising speed: 194 kmh
– full speed: 210 kmh
– Skoropodъёmnost: 270 m / min
The range filter Mi-2
– 580 km
Practical ceiling Mi-2
– 4000 m
Static ceiling of the Mi-2
– 1700 m
Arming Mi-2
military options, intended for military operations, They can be equipped with:
– gun NS-23 and 6 pulyemyotami;
– gun NA-23 and 2 × 16 5-NAR C;
– gun NS-23, 2 machine guns and 4 anti-tank guided missiles "Baby";
– gun NS-23, 2 machine guns and 4 self-guided anti-aircraft missiles "Strela-2M"
Photo Mi-2
