Mi-26: the largest helicopter in the world
The fact that airplanes are large and simply huge, almost everyone knows, but few people know that over 35 years ago, made its first flight helicopter Mi-26 - the largest helicopter to date worldwide.
Mi-26 It was designed in the mid 70-ies of the last century, and its first flight rotor helicopter made in 1977 year. The main purpose of creating the largest helicopter in the world was the task assigned to aircraft designers to develop a large transport vehicle, which is suitable for civilian purposes, and for military applications. The first field trials Mi-26 1988 was held in the year when there was a unique military operation related to transportation on external sling another downed in Afghanistan Mi-8. It is worth noting that for the largest helicopter in the world set an official Guinness World Record, related to the fact that in September 1996 years 26 Mi-raised on his board 224 6.5 to an altitude parachutist kilometers.
To date, the helicopter is designed to serve many roles, but primarily associated with military applications. Fighting rotor helicopter can carry on its board a great number of passengers that is comparable only to that of an airplane. Nevertheless, the largest helicopter the world has a small range of flight - when the maximum filling tanks, but with no cargo, it can fly only about 800 kilometers, after which, the Mi-26 require refueling.
To better understand how large is actually a the largest helicopter in the world, imagine that the length of the helicopter 40 meters, the diameter of its rotor main rotor has a size equal to 32 meters, and the width of the cargo compartment is 3.2 meters. Really, Mi-26 represents the largest helicopter in the world, and when taken it seems that designers simply attached to the fuselage of the aircraft lifting screw, thereby obtaining a gigantic aerial machine.
The main types of application Mi-26:
- Military aircraft - transport and landing of combat units as well as military equipment, including armored.
- Civil aviation - transport of passengers and goods over short distances.
Today, the release of Mi-26 continues, as does the need for large helicopters is growing every day.
The biggest helicopter in the world, who not only fly, but also can carry quite heavy loads, a Mu-26. This machine can be operated in a fairly tough Arctic conditions and at the same time raise the load, which is not up to any other helicopter. The air flow from the blades of the machine is so powerful that it is able to break the branches of the trees and the people fell to the ground.
The history of the helicopter
This helicopter model has been fully completed by the end of the year 1960. Every year dozens of such giants entered the service in the army, and he came to civil organizations, where he worked for the good of the motherland. On the basis of such an air machine has been created even more severe in the helicopter-12. Sam Mi-26 was developed on the basis of no less famous Mi-6.
Developed countries impose high demands on air devices. For this reason, the designers had the idea to improve the existing Mi-6 and create a new Mi-26. The new machine should raise even more freight to 20 tons and transport them over a distance of 500 kilometers. As for military operations and for civil use the new device must be lifted to a height of one kilometer or more. Heavy helicopter was a new generation of machine, its working title of designers was "the product 90». Draft articles 90, or Mi-26, was approved at the end of the year 1971. For the construction of the first model launched in the year 72, and only three years after the helicopter took the State Commission. Heavy Mi-26 just performed its first flight in December 77 years, and it lasted only three minutes. The first working models were equipped for military use, and only after a few years, this machine started to supply and civic organizations.
Features of the cargo helicopter Mi-26
Civilian helicopter model has been put into production only 85 year. From war machine civilian version differed essentially only navigational equipment. It differs as suspension system, through which it was possible to provide the best transport of sea containers. Specially developed platform will increase the speed of transportation to 200 km / h. To use the machine in the mountains to his capture has been developed by which it was possible to transport firewood.
This helicopter has a number of merits and records, which he set before the mass production of receipts. Even in 1982, he was able to take the weight of the load in 25 tons and rise with him to a height of 4 thousand meters, and completely the whole mass of the helicopter at the time was little more than 56,7 tons. On this machine Irina Kopec nine world records were established, when there was a woman at the helm. In August 88-second record was the fact that the Mi-26 the crew was able to fly on a vicious circle length of 2 thousand kilometers at an average speed of 279 km / h. In this flight, the pilot had to go through a strong meteofront.
Mi-26 capable of carrying any military equipment, whose weight does not exceed 20 tons. All military equipment can be submerged under its own power through the rear hatch of the helicopter, which opens two doors. As for manpower, in a cargo helicopter can safely place a soldier 82 or 68 parachutists throughout outfit. In the event of military action so a helicopter can quickly be equipped for the transportation of the wounded, which can be placed on a stretcher, in this case can fit 60 soldiers and three accompanying doctor. In long-haul flights can be installed additional fuel tanks directly into the cargo bay.
The largest contribution to the development and production of a new generation helicopter made directly with the designers GP Smirnov and his colleague AG Samusenko, chief designer was appointed OP Bach. Customer have been set very high requirements for the new machine, which have not been implemented yet in any model helicopter. To solve the problem of heavy-duty, designers had to resort to the use of a new engine with a capacity of 20 thousand horsepower.
When designing the machine a lot of attention was paid to the choice of rotor and its qualitative parameters. After many experiments were made of metal and special blades, which gave a significant increase in efficiency. Ball screw was designed and assembled with blades and 8 28 I have meters in diameter. The use of new materials made it possible to reduce the weight on 40%, it turned out even better than the five-blade from Mi-6. Widget HB such a large size have decided to produce a titanium alloy, which has allowed it to reduce the overall weight, and at the same time the fortress has not decreased. Compared with the Mi-6 tail propeller from Mi-26 was very revolutionary engineering course because it manufactured from fiberglass and Mi-6 had wooden propeller.
The big challenge for the designers task remained to connect two motors in one piece with reducer, for that used a specially designed gearbox BP brand-26. The main feature of the gear was that designed and built it not dvigatelisty, and as it was before, in the company Mile. Innovation in the manufactured gearbox allowed to transfer to the main screw twice as much power than it was in the Mi-6.
Like it or not, and the weight for all air units is the main problem. Constructors and then were able to use new materials, which have reduced the weight of the machine weight to the Mi-6, but the cargo bay and the cockpit was increased almost twice. It should be noted that the increase in the unit size and weight reduction not reduced strength and stiffness of the helicopter fuselage.
Experienced designers take into account the weaknesses and vulnerabilities of all previous models of helicopters. Major changes have also air intakes. Before them dustproof device was installed, which allows you to clean the air in the 70%. This innovation allowed the rise of a dusty areas, while the engine power is not reduced substantially. The Mi-26 was well thought out machine maintenance. In order to dispense with the airport services, helicopter installed a new APU system cleaning. Also consider comfortable working mechanics, because they always have to resort to the use of ladders, and now all the hoods are made in the form of working platforms.
For easy loading and unloading the helicopter is equipped with two winches, which have a lifting capacity in 5 tons. It is also an opportunity to raise and lower the loading ramp with the help of hydraulics and control this device can be from the cockpit, with the loading bay, and even outside of the machine itself. With regard to the loading, then it is possible to note that the designers did a really great job, because there are many functions for more convenient loading with both the car and the ground.
Helicopter equipment produced according to the latest achievements of science and technology. At Mi-26 weather radar was installed, which allows flight in all weather conditions and at any time of the day or night. This device is very precise and allows you to calculate the area of flight in 1900 km area, and time to prepare this device just 10 minutes. This helicopter was installed three channel autopilot, the newest system of recording of the flight data and message recording, which allows you to inform the crew about the dangers and failures.
Cargo helicopter Mi-26 can rightly be considered the star of airshows in the world, and the holder of many awards and world records. However, in recent years, namely after the collapse of the USSR, for service costs and the release of this legendary machine is significantly reduced. But the history of this unit is by no means over. Recently, this type of helicopter is widely used for commercial purposes on the territory of many countries. The first models of the helicopter could fly without repair for six hours, and today civil models can bump up to 1200 hours without repair. The total time of operation of Mi-26 20 8 years and thousands of hours.
To date, the production of helicopters Mi-26 continues, but in small quantities, and for special orders.
Mi-26- Military transport version
Mi-26A- An improved version
Mi-26M- Designed to improve performance and is equipped with a new navigation equipment and the new screw.
Mi-26MS- Medical version
Mi-26NEF-M- ASW variant; on the external sling carrying a sonar detection of submarines, has lateral removable cockpit operator, is currently in a museum in lёtnom polurazobrannom sostoyanii.16 November 2013 g was seen in the area of Novocherkassk during transportation on external sling Mi-26T presumably Rostov-on-Don at JSC Rostvertol.
Mi-26P- The civilian version of a passenger on 63
Mi-26PK- "Flying crane"
Mi-26T- Civilian transport version
Mi-26T2- Update the basic model of the clock use of a reduced number of crew members and new avionics. Serial production of the modernized helicopter is scheduled to begin in the year 2012.
Mi-26TC- Cargo version
Mi-26TM- "Flying crane"
Mi-26TP- Fire option
Mi-26TS- Export version of the Mi-26T
Mi-27- Air control point
fuselage design also has a number of innovations that allowed to surpass the Mi-6 on the characteristics of the cargo compartment nearly doubled.
Normal take-off mass of the helicopter is 49600 kg. Maximum speed 295 km / h. Flight range 800 km. Ceiling 4600 m.
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