Combined model mi 26 star. Appearance and contents of the box

Almost everyone knows that planes are large and simply huge, however, few people know that they made their first flight more than 35 years ago. Mi-26 helicopter – the largest helicopter currently all over the world.

Helicopter Mi-26 was designed back in the mid-70s of the last century, and the rotorcraft made its first flight in 1977. The main goal of creating the largest helicopter in the world was the task assigned to aircraft designers to develop a large transport vehicle that is suitable for both civilian purposes and military use. The first field trials Mi-26 helicopter took place in 1988, when a unique military operation took place related to the transportation on an external sling of another Mi-8 helicopter shot down in Afghanistan. It is worth noting that the official Guinness record was set behind the largest helicopter in the world, due to the fact that in September 1996, the Mi-26 lifted 224 paratroopers on its board to a height of 6.5 kilometers.

To date, the helicopter is designed to perform a variety of tasks, but primarily related to military use. A combat rotorcraft can transport a huge number of passengers on its board, comparable only to an airplane. Nevertheless, the largest helicopter in the world has a short flight range - with the most filled tanks, but without cargo, it can fly only about 800 kilometers, after which the Mi-26 needs refueling.

In order to better understand how big it really is the largest helicopter in the world, imagine that the length of a helicopter is 40 meters, the diameter of its main rotor is 32 meters, and the width of the cargo compartment is 3.2 meters. Really, Mi-26 helicopter represents the largest helicopter in the world, and when considering it, it seems that the designers simply attached a lifting screw to the fuselage of the aircraft, thereby obtaining a giant air machine.

The main types of application of the Mi-26 helicopter:

1. Military aviation - transportation and landing of combat units, as well as military equipment, including armored ones.
2. Civil aviation is the transportation of passengers and goods over short distances.

To date, the production of Mi-26 helicopters continues, as the need for really large helicopters is growing every day.

The largest helicopter in the world, which not only flies, but can also carry quite heavy loads, is the Mi-26. This machine can operate in fairly harsh arctic conditions and at the same time lift a load that no other helicopter can handle. The air flow from the blades of this machine is so powerful that it is able to break branches on trees and knock people down.

The history of the creation of the helicopter

This helicopter model was completely ready by the end of 1960. Every year, dozens of such giants entered the army, and he also came to civilian organizations, where he worked for the good of his homeland. An even heavier B-12 helicopter was created on the basis of such an air vehicle. The Mi-26 itself was developed on the basis of the equally famous Mi-6 helicopter.

The development of the country made great demands on aircraft. For this reason, the designers came up with the idea to improve the existing Mi-6 and create a newer Mi-26. The new machine must lift even larger loads, up to 20 tons, and transport them over a distance of 500 kilometers. Also for both military operations and for civilian use, the new device must rise to a height of one kilometer or more. The heavy helicopter was a new generation machine, its working name for the designers was “product 90”. The project of product 90, or Mi-26, was approved at the end of 1971. The construction of the first model began in 72, and after three years the helicopter was accepted by the State Commission. The heavy Mi-26 helicopter made its first flight only in December 1977, and it lasted only three minutes. The first working models were completed for military use, and only after a few more years, civilian organizations began to supply this machine.

Features of the cargo helicopter Mi-26

The civilian model of the helicopter was put into production only in 85. The civilian version differed from the military vehicle mainly only in navigation equipment. The suspension system was also different, with which it was possible to provide better transportation sea ​​containers. A specially designed platform made it possible to increase the speed of cargo transportation up to 200 km/h. To use the machine in mountainous conditions, a gripper was developed for it, with which it was possible to transport firewood.

This helicopter has a number of advantages and records that it set even before entering mass production. Back in 1982, he was able to take a load of 25 tons and climb with it to a height of 4 thousand meters, and the entire mass of the helicopter at that moment was a little more than 56.7 tons. On this machine, Irina Kopets set nine world records when a woman was at the helm. In August 1988, the record was also that the crew of the Mi-26 was able to fly over vicious circle 2,000 kilometers long at an average speed of 279 km/h. During this flight, the pilots had to go through a strong weather front.

Mi-26 is capable of transporting any military equipment, the mass of which does not exceed 20 tons. All military equipment can be loaded under its own power through the rear hatch of the helicopter, which opens with two wings. As for manpower, such a cargo helicopter can easily accommodate 82 soldiers or 68 paratroopers in all equipment. In the event of hostilities, such a helicopter can be quickly equipped to transport the wounded, who can be placed on a stretcher, in which case 60 soldiers and three accompanying doctors can fit. During long flights it is possible to install additional fuel tanks directly in the cargo compartment.

Description of the Mi-26

The greatest contribution to the development and production of a new generation helicopter was made directly by the designers G.P. Smirnov and his colleague A.G. Samusenko, O.P. was appointed chief designer. Bach. The customer set very high requirements for new car, which have not yet been embodied in any helicopter model. To solve the problem of large payload, the designers had to resort to using a new engine with a capacity of 20 thousand horsepower.

When designing the machine, much attention was paid to the choice of the main rotor and its quality parameters. After many experiments, special metal-plastic blades were made, which gave a significant increase in efficiency. The main rotor was designed and assembled with 8 blades and was 28 meters in diameter. The use of new materials made it possible to reduce the weight by 40%, it turned out to be even lighter than the five-bladed Mi-6. It was decided to make an HB bushing of such a large size from a titanium alloy, which made it possible to reduce it total weight, and at the same time the fortress did not decrease. Compared to the Mi-6, the tail propeller of the Mi-26 was a very revolutionary design move, since it was made of fiberglass, while the Mi-6 had a wooden propeller.

A big problem for the designers was the task of connecting two engines into one with the help of a gearbox, for this they used a specially designed gearbox of the brand BP-26. The main feature of the gearbox was that it was not designed and manufactured by engine specialists, but, as it was before, at the Mil company. Innovations in the manufactured gearbox made it possible to transfer twice to the main screw more power than it was in the Mi-6.

Like it or not, weight for all air units is the main problem. The designers were also able to apply new materials here, which made it possible to reduce the weight of the vehicle to the weight of the Mi-6, but at the same time, the cargo compartment and cabin were almost doubled. It should be noted that the increase in dimensions and reduction in the weight of the unit did not reduce the strength and rigidity of the helicopter fuselage.

Experienced designers took into account the shortcomings and vulnerabilities of all previous helicopter models. Major changes also affected the air intakes. A dustproof device was installed in front of them, which allows you to clean the air by 70%. This innovation made it possible to take off from dusty areas with little to no reduction in engine power. In the Mi-26, the maintenance of the machine was well thought out. In order to do without airfield services, a new APU cleaning system was installed on the helicopter. They also thought about the comfort of the mechanics, since they always had to resort to using a stepladder, and now all the hoods are made in the form of working platforms.

For more convenient loading and unloading, the helicopter is equipped with two winches with a lifting capacity of 5 tons. It also became possible to raise and lower the loading ramp using hydraulics, and this device can be controlled from the cockpit, from the loading compartment and even from outside the machine itself. As for loading, it can be noted here that the designers have done a really great job, since there are many functions for more convenient loading both from cars and from the ground.

The helicopter was equipped according to the latest achievements of science and technology. A meteorological radar was installed on the Mi-26, which allows flights in all weather conditions and at any time of the day or night. This device is very accurate and allows you to calculate the flight area of ​​​​1900 km, and the time for preparing this device is only 10 minutes. This helicopter was equipped with a three-channel autopilot, latest system flight data logging and message recording, which allows the crew to be alerted to hazards and malfunctions.

The Mi-26 cargo helicopter can rightly be considered the star of air shows around the world, as well as the owner of many world awards and records. However, in recent years, namely after the collapse of the USSR, the cost of armament and production of this legendary machine has significantly decreased. But the history of this unit is far from over. Recently, this type of helicopter has been widely used for commercial purposes in the territories of many states. The first models of this helicopter could fly without repair for six hundred hours, and today civilian models can fly up to 1200 hours without repair. The total operating time of the Mi-26 is 20 years or 8,000 hours.

To date, the production of Mi-26 helicopters continues, but in small batches and on special orders.

Mi-26 modifications

B-29- prototype

Mi-26- military transport option

Mi-26A- improved version

Mi-26M- Designed for increased performance and equipped with new navigation equipment and a new propeller.

Mi-26MS- medical option

Mi-26NEF-M- anti-submarine option; on an external sling carried a sonar detection station for submarines, there is a side removable cockpit of the pilot-operator, is currently in a flight museum in a semi-disassembled state. On November 16, 2013, it was seen near the city of Novocherkassk during transportation on an external sling of the Mi-26T, presumably to the city of Rostov-on-Don at JSC Rostvertol.

Mi-26P- civilian version for 63 passengers

Mi-26PK- "flying crane"

Mi-26T- civil transport option

Mi-26T2- updated base model round-the-clock use with a reduced number of crew members and new avionics. Serial production of the modernized helicopter is scheduled to begin in 2012.

Mi-26TC- cargo option

Mi-26TM- "flying crane"

Mi-26TP- fire variant

Mi-26PP- jammer

Mi-26TS- export version of the Mi-26T

Mi-26TZ- tanker

Mi-27- air control center

The design of the fuselage also featured a number of innovations that made it possible to surpass the Mi-6 in terms of the characteristics of the cargo compartment by almost two times.

The normal takeoff weight of the helicopter is 49600 kg. Max speed 295 km/h Flight range 800 km. Practical ceiling 4600 m.

Mi-26 (product "90", Halo according to NATO classification) is a Soviet multi-purpose transport helicopter, the world's largest transport helicopter. Developer - OKB Mil. First flight December 14, 1977. Serially produced by Rostov helicopter factory. Total for 1999
220 machines were manufactured (276 for the entire period of mass production).

On military transport variants, LTC ejection devices, IR interference transmitters, and screens for suppressing IR radiation are placed.

The landing gear is non-retractable, tricycle, with twin wheels and a retractable tail wheel. The front support is self-orienting, the main supports are with twin wheels measuring 1120 x
450mm are small in size, two-chamber suspension struts provide a change in ground clearance in the parking lot.

The design of the main landing gear allows you to change the parking clearance, lifting the rear of the fuselage, which makes it possible to bring the load as close to the gangway. In order not to interfere with the approach
equipment to the rear hatch, the tail support is pulled up to the tail boom.

When designing the Mi-26, the specialists of the MVZ tried to take into account the operating experience of its predecessors as much as possible. First of all, it should be noted the decision to place in front of the air intakes
engines dust protection devices (PZU) of fungal type with a degree of purification of 65-70%, using a centrifugal effect to trap foreign particles. This allowed the helicopter to work from dusty areas in the future with virtually no reduction in engine life with a minimum decrease in their power. To do without airfield power supplies and compressed air, the helicopter was equipped with APU. And in order not to resort to
ground handling to ladders and similar equipment, folding hoods and panels of the power plant were made in the form of work platforms, and inside the tail boom and keel
organized a passage to the tail rotor.

The power plant consists of two turboshaft gas turbine engines with a free turbine D-136, installed side by side on top of the fuselage in separate nacelles, separated by a titanium fire wall. Engine air intakes are equipped with dust protection devices and electrical
anti-icing systems. The power plant has a system for automatically maintaining the rotor speed; in case of failure of one engine, the system automatically
increases the power of the second to extreme, maintaining a constant speed of the main rotor (132 rpm).

The tail rotor is five-bladed, with a diameter of 7.67 m, with rectangular blades in
fiberglass plan.

The main rotor is eight-bladed, with hinged blades and hydraulic dampers. The blades are rectangular in plan, have improved aerodynamic profiles with a relative thickness of 0.12 at the butt and 0.09 at the end of the blade and moderate aerodynamic twist. Blades of mixed design with a tubular steel spar, to which
26 sections with ribs, fiberglass skin and honeycomb core are attached. The tip of the blade is protected by a titanium alloy anti-corrosion lining. Blade chord 0.835m,
peripheral speed of the ends of the blades 220m/s.

DESIGN. A single-rotor helicopter with a tail rotor, two gas turbine engines and a tricycle landing gear. The design is made of aluminum-lithium alloys with a wide use of titanium
alloys and composite materials.

And tell me please: is this a dent on the board or is it supposed to be like that?

and why are there protrusions under the window that look like they can be removed?

In addition to the military version of the Mi-26, Aviamax also had its civilian counterpart: Mi-26T "Vasily Merkulov"

Carrying capacity - up to 25 tons of payload. The helicopter can be used for both military and civilian tasks, as well as for search and rescue operations.

Funny toys on glass :-)))

To date, the Mi-26 is the largest transport helicopter in the world,
mass-produced. In the USA, a similar, but much smaller, CH-53 helicopter is produced by the Sikorsky Aero Engineering Corporation.

The layout of the Mi-26 helicopter is the same as that of the Mi-6 helicopter, however, the dimensions
it is less than that of the Mi-6. The fuselage with the same dimensions and weight as the Mi-6 has
cargo compartment, the volume of which is twice that of the Mi-6, and which is designed for
transport twice as much cargo and is equipped with devices that facilitate loading and
unloading.

Water tank hanger

The central part of the fuselage includes a cargo compartment with dimensions of 12.00 * 3.20 * (2.95-3.57) m and a rear compartment that passes into the end beam.

Winch internal

Drinking water and drinkers :-)))

Excellent flagellum :-)))

Everything is available

Well, where without an electric stove

exit to the top

And here is the most interesting part: the cockpit. The fuselage is semi-monocoque. In the bow there is a crew cabin, consisting of the first pilot in the front left seat and the second pilot in the right seat. Behind the first pilot is a flight engineer, and behind the second - a navigator-radio operator; between the pilots, a cargo operator can be located on a folding seat, behind the cockpit there is a separate cabin for four passengers.
The electronic and navigation equipment of the helicopter allows you to perform combat missions in difficult weather conditions and at any time of the day. Included in it
The navigation complex includes the Greben-2 combined heading system, the PKP-77M flight control device, the Veer-M short-range navigation electronic system, a radio altimeter, automatic radio compasses, and a Doppler speed and drift angle meter. The flight complex of the PKV-26-1 helicopter consists of a four-channel autopilot VUAP-1, a trajectory control system, director control and load vibration damping on an external sling.

The helicopter is equipped with a meteorological radar, communications equipment, as well as television equipment for visual monitoring of the state of the cargo.
This is for passengers.

Position of navigator-radio operator

Flight engineer position

Second pilot

Central appliances

General view, there were a lot of people and they gave me no more than 3 minutes for everything about everything :-(((

The auxiliary power unit is located under the cockpit on the left side and provides engine starting and drive of the electric and hydraulic systems and the air conditioning system in the parking lot.

The first show of the helicopter to the general public took place in June 1981 at the Aerospace Show in Le Bourget, where the Mi-26 became the star of the exhibition. The fate of the Mi-26 resembles the fate of the An-124. Being almost the same age, these extraordinary machines have fully known the glory of the "stars" of international air shows,
became the owners of world records, however, after the collapse of the USSR and a landslide decrease in defense spending in the post-Soviet states, their use for their original main purpose dropped sharply, but began new stage in biography, associated with commercial
use in foreign markets. Like Ruslan, the Mi-26 continues to be mass-produced. To date, 288 such helicopters have been produced in Rostov. Highly relevant
for the operated "twenty-sixths" is a set of issues related to the extension of the resource. For machines of the first series, the resource before the first repair did not exceed 600 hours, now for the civilian versions of the Mi-26 it has been brought to 1200 hours, but the total assigned life is still 8000 hours or 20 years. To solve this problem, MVZ them. M.L.Milya is ready to allow operation
Mi-26 "on condition" with the condition of an individual approach to each machine and mandatory inspection helicopters by the company's specialists.

LTH:
Mi-26 modification
Main screw diameter, m 32.00
Tail rotor diameter, m 7.61
Length, m 33.73
Height, m ​​8.15
Weight, kg
empty 28200
normal takeoff 49600
maximum takeoff 56000
Internal fuel, l 12000
Engine type 2 GTE ZMKB Progress

D-136
Power, kW 2 x 8380
Maximum speed, km/h 295
Cruise speed, km/h 255
Practical range, km 2000
Range, km 800
Practical ceiling, m 6500
Static ceiling, m 1800

60 wounded on stretchers with 3

accompanying persons or 20000 kg of cargo in

cab or 18500 kg suspended

Wikipedia was used to write this post.

The 1/72 scale model of the Mi-26 Helicopter from Zvezda has been produced for a long time, but the model came into my hands quite recently. I wanted to assemble this model, but the desire was "average". But once I participated in and took with a helicopter.

background

As a gift, Zvezda-Modeling promised to send a model of the MI-26 helicopter with additions to it. As a result, they sent a color and a combined model of the Mi-24 helicopter.

I wrote to the group administrators about the error. They promised to sort it out and told you to keep the Mi-24, and we will send you another package with the Mi-26. But in the end, I never received the package. As a result, I wanted to buy the Mi-26 model on my own. But at that time it cost 700 rubles .. then 800 ... as a result, today in our stores it cost about 1300 rubles.

This model was also sold in Children's world but it didn't cost much either. But one day I saw that there were discounts on prefabricated models in the Children's World. And the Mi-26 helicopter from Zvezda costs only 900 rubles. I also checked the bonus card of the store, and there were 200 rubles that can be used when buying. As a result, I bought the Mi-26 for 700 rubles.

general information

Russian heavy helicopter Mi-26(Russian heavy helicopter Mi-26"Halo")

Company manufacturer: Star

Scale: 1/72

Vendor code: 7270

Number of details: 238 pcs

Model size (mm): 55 cm

Appearance and contents of the box

A big, really big box in the corporate colors of the Zvezda models with the image of a Mi-24 helicopter against the backdrop of the mountains.

On the box there is a table with the necessary colors for painting the helicopter, the number of parts and the size of the model. It's nice that the inscription flaunts on the box: Made in Russia

We open the box. Sprues are packed in "crispy" polyethylene, there is a box with transparent sprues and instructions.

We take out the contents of the box on the table, first free up space. Sprues take up a lot of space.

Model sprues

The model includes sprues: A, B, C, D and sprue E with transparent details.

Sprue A

Sprue A contains only 2 parts of the helicopter body. Look how big the model will turn out. Specially put sprue on A3 cutting mat.

The halves of the body are made quite neatly. But whether they converge or not - the assembly of the model will show. On various forums, the model is not strongly scolded. I think the halves of the body should come together.

Sprue B

On this sprue are the rest of the large parts of the helicopter body.

Sprue C

Sprue C contains one large part of the bottom of the helicopter fuselage and many small parts.

Larger: Details are made neatly, there is no burr and traces of pushers in places "invisible" during assembly.

Sprue D

Sprue D contains helicopter blades, wheels and other small parts.

The blade sizes are impressive. For comparison, I put on the blade of the Mi-26 a blade from the Mi-8, which I recently. On one forum I read the description of the assembly of the Mi-26. So there the author said that these blades broke off under their own weight.

Transparent sprues

Transparent sprues are carefully packed in a separate box.

There is not much glazing in the model: the cockpit, and several windows.

It's all right here. Sprues are neat. Glasses are transparent.

Decals

One decal sheet. The sheet shows 2 options for pasting the helicopter according to the instructions: Mi-26 of the border troops and Mi-26 of the UN.

Also other engineering inscriptions on the helicopter and control devices. All inscriptions are readable.

“... The wide blade rustled ominously, describing sparkling circles above the baron's head. The Baron was amazing. There was something in it from a cargo helicopter with a propeller at idle ... "(ABS," It's hard to be a god ") The gray attack aircraft, in fact, like Baron Pampa, did not have the opportunity to appreciate the flattering of the comparison, as the ABS rightly noted - they had never seen a cargo helicopter. Unlike us...

Zvezda recently released the long-awaited Mi-26 in 1/72 scale. So now you don’t even have to look for a real one, just go to a model store or order by mail and feel the Power! (Exactly with a capital letter)

Here is the impression made by the real Mi-26, it is completely conveyed by the model, and even at the stage of inspecting the box and its contents. So the first requirement for the model (to convey the feeling of a real device) Zvezdin met even before assembly! A large (49x30x9 cm) box with a hinged lid (this is where I will store the assembled 1/48))), made of thick cardboard, with a beautiful and perfectly conveying character of the car, a picture on the “face”, and several photos of the assembled model at the bottom. We are excited to open...

Wow! 5 sprues, which housed 238 parts ("if the cook does not lie to us" (c), of course, I did not count them))). Casting is clean, with virtually no burr. There are small sinks on the case in the area of ​​the centering pins. The surface of large parts is somewhat rough.


The stitching is neat, but not deep. Immediately on the photo I found a place where it does not exist, but should be, and where, for some reason, with the help of embroidery, rivet seams are depicted. Speaking of rivets, there aren't any. We arm ourselves with photos (fortunately, there are only three rolls, thanks, by the way, to everyone involved for them) and compare! Who needs it, they will fix the jointing and add a riveting.


All sorts of little things have been worked out perfectly for LWD and the 72nd scale, such as: blinds on the engines and the hull, hinges, all sorts of intakes, etc. The body is assembled from 9 parts, which is inevitable for such a large model.

The interior of the cockpit is simple, although it is assembled from more than two dozen parts (without pilots). Almost all devices are given decals. The scheme of its assembly and coloring is understandable and sensible. The pilots are openwork, they do not cause internal protest, they are quite suitable for landing inside, the only pity is that no one will see the laces on their boots after that;)


The cargo compartment is completely reproduced. More precisely, a power set and a winch, the cargo hatch can be "opened" and the gangway can be thrown off, you can also open the side doors - it's not a shame to assemble it "out of the box". And anything optional equipment and the wiring was left on the conscience of the masters and did the right thing. Unfortunately, it was not possible to avoid traces of the pushers, they will have to be removed trying not to damage the cab relief. Not pleasant enough, because there are a lot of them. Not very sensible in the instructions reflects the moment of painting the cargo compartment. The fact that the floor is painted in a gray-blue color that is different from the entire cabin is mentioned in passing, for those who assemble the car without a photo, this moment is easy to miss.


The main rotor blades are given with sag. The sleeve is assembled from 32 parts!!! And this is without the 8 blades themselves !!! The quality of the casting is practically flawless, a slight shift of the halves of the mold. Did you seriously expect to do without a skin and a file?))) For me, in general, you can limit yourself to assembling only the rotor, and then say: “See how beautiful it is? Can you imagine how good its carrier is?!!!”


The tail rotor is cast in just three parts plus six blades. No, this is not a mistake, there are six blades, since sprue D is in two copies, three blades each. Of course, you can try to use everything, but according to intelligence data, even five are enough. ;)

Unfortunately, there is nowhere to turn around on the chassis. Such is "ce la vie". All to the point. The front strut is “loaded” excessively, as if all 20 tons of load were stuffed into the helicopter, of which 15 tons were in the nose, which, however, is not so difficult to treat for picky people. The main racks of three parts each. Cylinders of a somewhat simplified relief, HPD - no complaints. All wheels are made of two halves, without load, the tread and discs are like “native”. Can be made to rotate.

I would not be surprised if they made engines - parts for 20 each. But no - there are turbine intakes and exhaust. Everything is on top.

Continuing the development of heavy transport helicopters necessary for National economy and the armed forces, MVZ them. M. L. Mil in the early 1970s began to develop a new heavy transport helicopter of the next generation to replace helicopters Mi-6 And Mi-10. The requirements for the new helicopter provided for the transportation of cargo weighing 20 tons over a distance of 400 km while providing a static ceiling without taking into account the influence of the proximity of the earth more than 1500 m.

By this time, spent in the MVZ them. M.L. Mil, together with TsAGI and CIAM, found that the real design of heavy-lift helicopters can only be based on the use of geared main rotor drive systems, which led to the choice of a single-rotor scheme with a tail rotor. However, the main difficulty was the problem of transferring huge power to the main rotor, which was successfully solved in the Design Bureau by creating the main gearbox, made according to a multi-threaded non-planetary scheme and having only a slightly larger mass than the helicopter gearbox Mi-6, at twice the transmitted power.

Much attention was paid to the choice of the optimal parameters of the main rotor: the designed eight-bladed main rotor with a diameter of 28 m made it possible to obtain significantly more thrust than a five-bladed main rotor with a diameter of 35 m of a helicopter Mi-6, and the research carried out jointly with TsAGI on optimizing the aerodynamic layout of the blades provided a significant increase in the efficiency of the main rotor. A number of technical innovations were used in the design of the main rotor: the design of the hub is made of a titanium alloy, which provides high fatigue strength, and in the design of the blades with a steel tubular spar and a frame and casing made of KM, high-strength fiberglass, polymer paper honeycombs and new high-strength adhesives are widely used. As a result, the rotor of the helicopter Mi-26, having 40% less mass, developed 30% more thrust.

Helicopter layout Mi-26 selected same as helicopter Mi-6, but its dimensions are smaller than those of Mi-6. Fuselage with the same dimensions and weight as Mi-6, has a cargo compartment, the volume of which is twice that of Mi-6, and which is designed to carry twice as much cargo and is equipped with devices that facilitate loading and unloading. Cabin dimensions and helicopter payload Mi-26 provide the ability to transport 80-90% of the combat equipment and cargo of a motorized rifle division.

As a power plant for a helicopter Mi-26 turboshaft gas turbine engines with a free turbine D-136, created at the Zaporozhye Engine Design Bureau (ZMKB) "Progress" under the leadership of General Designer V.A. Lotarev, were chosen and are not only the most powerful turboshaft gas turbine engines in the world, but also differ specific gravity, low specific fuel consumption and low noise and air pollutant emissions.

When developing the helicopter, much attention was paid to improving its aerodynamic contours, which made it possible to significantly reduce harmful drag and contributed to a significant reduction in kilometer fuel consumption, and as a result, to double the reduced transport performance compared to a helicopter Mi-6.

First flight of the first prototype helicopter Mi-26 made on December 14, 1977 (test pilot G.R. Karapetyan). The development of the helicopter was carried out under the leadership of General Designer M.N.Tishchenko. According to the flight performance characteristics of the helicopter Mi-26 significantly surpassed domestic and foreign helicopters, as evidenced by 14 international records set on it, including records for lifting a load of 25t to a height of 4100m, 20t to a height of 4600m, 15t to 5600m and 10t to 6400m, as well as reaching a height of 2000m with a flight weight of 56768kg, set on February 2-4, 1982.

Helicopters Mi-26 repeatedly shown at international aerospace exhibitions, starting with the 34th Aerospace Show in Paris in 1981, demonstrating a payload inaccessible to foreign helicopters.

Serial production of helicopters Mi-26 began in 1984 at the Rostov Helicopter Plant. More than 300 helicopters have been built for civil and military use, of which 40 have been exported to various countries, including 12 to Canada and 10 to India. The following helicopter modifications have been developed Mi-26:

• Mi-26- military transport helicopter.
• Mi-26A- modification with a combined control and navigation system for automatic landing and descent in a given place.
• Mi-26T- civil transport helicopter, similar to military transport helicopter. The fire-fighting version is equipped with a tank with a capacity of 7500 liters for fire-extinguishing liquid, which is directed to the fire source through one or two nozzles.
• Mi-26P- a passenger helicopter with a cabin for 70 seats, five in a row (3 + 2) with one aisle, with luggage and utility compartments. To ensure comfort, heat-insulating finishes and an air conditioning system are used.
• Mi-26TM- a helicopter-flying crane with a cabin for the operator under the fuselage behind the front landing gear or on the rear cargo ramp. On an external sling, it can carry a load of 20 tons.
• Mi-26TZ- tanker helicopter with additional tanks for fuel with a capacity of 14040l and lubricants - with a capacity of 1040l; equipped with equipment for simultaneous refueling of four aircraft or 10 vehicles.
• Mi-26M- an improved version of the helicopter with a new main rotor with improved blade aerodynamics, new GTE D-127 ZMKB "Progress" with a capacity of 10440 kW, and improved equipment. The helicopter has improved performance when operating in conditions of high air temperatures and high-lying runways and in case of failure of one engine. The maximum transportable load has been increased to 25t. In 1992, a preliminary design was developed, an experimental helicopter is being built, mass production planned after 1996. In 1993, a helicopter model was demonstrated at the 40th Aerospace Exhibition in Paris.

DESIGN. A single-rotor helicopter with a tail rotor, two gas turbine engines and a tricycle landing gear. The design is made of aluminum-lithium alloys with a wide use of titanium alloys and composite materials.

The fuselage is semi-monocoque. In the bow there is a crew cabin, consisting of the first pilot in the front left seat and the second pilot in the right seat. Behind the first pilot is a flight engineer, and behind the second - a navigator-radio operator; between the pilots, a cargo operator can be located on a folding seat, behind the cockpit there is a separate cabin for four passengers.

By crane helicopter Mi-26TM, used for the transportation of goods on an external sling and construction and installation works, in the forward part of the fuselage behind the front landing gear there is an overhead control cabin, facing backwards, so that it is convenient for the operator to control cargo work. A variant of a two-seater suspended control cabin, located under the cargo ramp and facing forward, was considered. The cabins were equipped with an electro-distance control system.

signaling, the cabin has a central passage and at the end two toilets and a luggage compartment, access to the cabin is through a door on the left side with a folding ladder, heat and sound insulation trim is used to ensure comfortable conditions for passengers and an air conditioning system is installed.

The tail boom, which has a flat bottom surface for improved loading and unloading conditions, transitions to a large vertical tail with an asymmetrical profile to create lateral force and offload the tail rotor and a parking-adjustable stabilizer.

The landing gear is non-retractable, tricycle, with twin wheels and a retractable tail wheel. The front support is self-orienting, the main supports with twin wheels measuring 1120 x 450mm are small in size, two-chamber suspension struts provide a change in ground clearance in the parking lot.

The main rotor is eight-bladed, with hinged blades and hydraulic dampers. The blades are rectangular in plan, have improved aerodynamic profiles with a relative thickness of 0.12 at the butt and 0.09 at the end of the blade and moderate aerodynamic twist. Mixed design blades with a tubular steel spar to which are attached 26 sections with ribs, fiberglass skin and honeycomb core. The tip of the blade is protected by a titanium alloy anti-corrosion lining. Blade chord 0.835m, tip speed 220m/s.

The tail rotor is five-blade, 7.67 m in diameter, with rectangular blades in terms of fiberglass.

The power plant consists of two turboshaft gas turbine engines with a free turbine D-136, installed side by side on top of the fuselage in separate nacelles, separated by a titanium fire wall. Engine air intakes are equipped with dust protection devices and electrical anti-icing systems. The power plant has a system for automatically maintaining the rotor speed; in case of failure of one engine, the system automatically increases the power of the second to emergency, maintaining a constant main rotor speed (132 rpm).

Turboshaft gas turbine engine D-136 with a free turbine of a modular design. The gas generator is based on the D-36 turbofan engine and has a six-stage compressor low pressure with a rotation speed of 10950 rpm and a seven-speed high pressure(14170 rpm). The two-stage free turbine has a rotation speed of 8300 rpm, adjustable within ±300 rpm. Engine length 57.5m, width 1.4m, height 1.13m, dry weight 1050kg, emergency engine power 8500kW, maximum continuous power 6338kW. Specific fuel consumption 0.206 kg/hp-h.

The auxiliary power unit is located under the cockpit on the left side and provides engine starting and drive of the electric and hydraulic systems and the air conditioning system in the parking lot.

Fuel is contained in 8 soft tanks with a total capacity of 12,000 liters, located under the cabin floor, from which it enters two service tanks located on top of the engines.

The transmission consists of a main gearbox, two freewheels, tail rotor drive shafts, an intermediate gearbox and a tail rotor gearbox. The main gearbox VR-26 of a modular design, three-stage, has drives for the cooling fan of the gearbox and oil systems, installed above the air intakes of the engines, tail rotor transmission and helicopter units. The gearbox has a length of 2.5m, a width of 1.95m and a height of 3.02m, with a dry weight of 3640kg.

For maintenance of the power plant and transmission on the engine fairings there are large folding panels used as work platforms, and in the tail boom there is a passage for servicing the tail rotor transmission without special ground equipment.

Equipment. Two hydraulic systems with a pressure of 20.6MPa and a DC electrical system with a voltage of 28V.

The navigation complex for flights day and night, in simple and difficult weather conditions, includes the Comb-2 combined heading system, the PKM-77M flight control device and the AGR-83-15 attitude indicator, ARK-19 and ARK-UD automatic radio compasses, the Veer-M short-range navigation radio system, the DISS-32 Doppler velocity and drift angle meter, the Romashka antenna-feeder system ", radio altimeter A-036. As part of the installed Mi-26 The flight complex PKV-26-1 includes a four-channel autopilot VUAP-1, a trajectory control system, a director control system, and a system for damping load oscillations on an external sling. There is a weather radar. Radio communication equipment includes R-863 and R-828 VHF command radio stations, Yadro-1B communication KB radio station, R-861 emergency radio station and SPU-8 aircraft intercom, BTU-1B on-board television equipment with three video cameras and a VK-175 video monitoring device for monitoring the state of cargo on an external sling. The "Tester-UZ" magnetic flight data recording system, RI-65 voice communication equipment were installed to notify the crew of emergency situations in flight.

On military transport variants, LTC ejection devices, IR interference transmitters, and screens for suppressing IR radiation are placed.

E.I. Ruzhitsky "Helicopters", 1997

Photos

	Model Mi-26 in the assembly shop of the cost center in Panki
	Full-scale test bench for the power plant and carrier system of the helicopter
	Main rotor sleeve Mi-26
	Mi-26 main gearbox
	Rolling out the first copy of the Mi-26 from the assembly shop of the cost center in Panki
	The first experimental Mi-26 during ground debugging
	Mi-26 in the first flight
	The first experimental Mi-26 during flight tests