Rostec announced the creation of a gearbox for a promising helicopter engine VK-650V

Photo from the site "Rostec"

A new gearbox for the promising VK-650V helicopter engine was created in Russia. This was reported by the press service of Rostec.

The Salyut industrial complex (part of the UEC) has developed a gearbox for the promising VK-650V engine. The first sample of the gearbox is already being tested as part of the demonstrator engine at the UEC-Klimov. It is noted that all work was completed on time.

(...) production of one of the key elements of the prototype VK-650V engine - a reducer is assigned to the Salyut production complex. The viability of all systems of the power plant depends on this unit - fuel, oil, electrical, as well as the transmission of power to the propeller

- said in a statement.

This year, the enterprise was tasked with manufacturing three prototypes of the VK-650V gearbox for subsequent tests.

The development of a new VK-650V gas turbine turboshaft engine was announced in 2019. In July 2020, the Ufa Engine-Building Association ("UEC-UMPO") announced the start of production of the VK-650V demonstrator engine. The new engine has a takeoff power of 650 hp. with., as well as in various modes gives out from 400 to 750 liters. from. At the end of January this year, VK-650V entered the stage of bench tests.

The engine is designed for the Ka-226 helicopter and Ansat helicopters. Certification is due in 2023. On Ka-226T helicopters, the Russian VK-650V is to replace the French Arrius 2G1 engines.

Comments

[credo]

On such a fine and sunny day, the news should be good.
Thanks to all the designers, engineers, workers creating new products for the development of the domestic motor and helicopter industry.

[seregatara1969]

oh how! is it a gearbox for a motor? or a gearbox for a starter of this motor?

[Mordvin 3]

Attainment! Soon they will report how they managed to attach the worm to the gear.

[The leader of the Redskins]

Yeah. Previously, we just noticed the appearance of new cars, airplanes, helicopters, harvesters ...
And now we are offered to rejoice at the beginning of testing a separate unit or mechanism.

[Artemiy_2]

You don't have to rejoice, but cry into your pillow and scream fse is gone

[Mordvin 3]

Quote: Artemiy_2

You don't have to rejoice

Hairpins, then at least ours, not Chinese? And when I assembled the machines for the last time, there were studs and bolts and nuts made by Made Yun China.

[dauria]

And now we are offered to rejoice at the beginning of tests of a separate unit

What, every day on a helicopter and a tank to do specifically for the "military review"? Ten articles with news a day. In a day ! Understand, to eat hunting every day for those whose profession is to spread the news.
And the helicopter main gearbox is really the most complicated thing. And it weighs on the same "eight" one and a half times more than two engines. Just for a laugh, estimate the ratio from a gas turbine to a propeller with its 120 rpm. This is not a 1: 1 car.

[Turist1996]

Unfortunately, that’s it.
What country - such are the achievements .. Alas!

[Piramidon]

Quote: Turist1996

Unfortunately, that’s it.
What country - such are the achievements .. Alas!

Helicopter gear is not a paper airplane, which is more complicated than which you most likely have not seen anything.

[Svetlana]

Very often they did not notice. Bo they came out quite often and regularly.

[Piramidon]

Quote: Leader of the Redskins

Previously, we just noticed the appearance of new cars, airplanes, helicopters, harvesters ...

"Before" is where and when? Well, it's time to understand that we live in a completely different country, that there will be no five-year plans. Neither Stalin nor Beria will return and will not jail / shoot bulk and Venedict. I would also like this, but you need to be a realist, not a dreamer from "but if only ..." History has no subjunctive mood.

[Bez 310]

Quote: Piramidon

Neither Stalin nor Beria will return and will not jail / shoot bulk and Venedict.

Or maybe they don't need to be planted / shot at all?

[orionvitt]

Quote: Bez 310

Or maybe they don't need to be planted / shot at all?

And them too.

[Zaurbek]

Well, a gearbox on a helicopter is a complicated thing. As well as theater.

[Mordvin 3]

Quote: Zaurbek

Well, a gearbox on a helicopter is a complicated thing.

Why is it so difficult? In the gearbox?

[dauria]

Why is it so difficult? In the gearbox?

Try to blind. Make no mistake, he is the main thing on the helicopter. As you blind, it will fly. Without exaggeration.
Here's to you with the Mi-8
MAIN REDUCER VR-8A

The main gearbox is designed to transmit torque from the engines to the main rotor of the helicopter, as well as to drive the units installed on the gearbox.
Reducing the speed in the main gearbox is achieved by using three reduction stages.
The first stage consists of two leading cylindrical helical gears, which are driven in rotation by the motors and are in mesh with the third, common driven gear wheel. The second stage of reduction consists of two bevel gears with helical teeth. The third stage of reduction is made according to the scheme of a closed differential mechanism, consisting of a differential and a closing circuit of the differential.
The main gearbox provides a drive for a number of units, the operation of which is possible even in the event of a power plant failure.
The main gearbox is installed on the ceiling panel of the helicopter fuselage "and is fixed to the power frame assemblies by means of a frame.

The gearbox consists of the following main units: a crankcase, two freewheels, a main rotor shaft drive, a main rotor shaft, a tail rotor drive and unit drives.
The gearbox housing is a power element that transfers aerodynamic forces from the main rotor to the fuselage.
The crankcase is cast from magnesium alloy.

Basic technical data
Input shaft speed, 12000 rpm
- the main rotor shaft (with a counter reading of 95,3%) 192 + -2 rpm
Gear ratio:
- to the main rotor drive 0,016
- tail rotor 0,2158
- fan 0,5018
- pumps NSh-39-1M 0,2026
- generator SGO-ZOU 0,6679
- sensors D-1 of the counter of rotation frequency 0,1984
- compressor AK-50T 0,1671
- oil unit 0,24633
The amount of oil to be poured into the gearbox
(excluding the filling of the channels of the gear lubrication system) - no more than 32 liters
Oil pumping through the gearbox - not less than 140 l / min
Dry weight of the reducer - 785 + -2% kg

[Undecim]

Question - like u reducer gear ratio can be less than one?

[dauria]

gear ratio can be less than one?

If it's a ratio of moments.
Well, flip the fractions if that's more convenient for you. Get an honest gear number ... Perhaps without taking into account efficiency.
So don't worry, this is not a multiplier.

[Undecim]

If it's a ratio of moments.
And what does that change?

[dauria]

And what does that change?

What are you meticulous. The sign can become negative, less than one. Then mention the gear ratio module. Not tired? It is clear, however, that in this case it was more convenient to bring the distribution to different outputs to the speed of a free turbine. More clearly. Yes, they turned it over. But they explained.
On autorotation, the input shaft will be the carrier shaft. And then the distribution to the tail and everything else will become more convenient to lead to its revolutions, and not to turn the fractions.
By the way, this description of the transmission is taken entirely from the book of the Syzran VVAUL.

[Undecim]

Did you understand what you wrote? The sign of what can become negative, the gear ratio?

[dauria]

The sign of which can become negative, the gear ratio

Gear sign relations... Yes, it can be negative. It is you who are confusing the number and the ratio. You started an empty dispute from scratch in a clearly and understandably written technical description, and not a university textbook.

[AUL]

And what, in fact, confuses you in this?

[Undecim]

Ivanov "Machine parts" open, you will understand.

[Konnick]

They have everything the other way around, they count from the screw, as they say, but according to the usual one, for example, the engine speed is 12000, the screw is 192, the gear ratio is 12000/192 = 62,5. STRANGE. 192/12000 = 0,016.

[Undecim]

The gearbox manufacturer considers it normal.

[Undecim]

I wonder what minus organisms mean?

[Zaurbek]

It is very difficult on a helicopter. It is easier to change the engine than it is .... the loads are large

[Konnick]

A gearbox for the Ka-26 for driving two propellers from one engine is simpler than a differential gearbox Mi-8, 24 ... there the drive is from two engines per one propeller. Incomprehensible news, they did not say anything new what was used, the kinematic diagram was changed, the materials or the processing of gears?

[Ros 56]

This is the first time I see such a thing, I hope the workmanship is decent? Or, as usual, if the oil does not flow, then it is not there.

[Undecim]

Not the main gearbox in the photo. This is part of it. The main helicopter gearbox assembly VR-226 looks somewhat different.

[Ros 56]

And how is it located in flight? Is this shaft for the main or tail rotor?

[Konnick]

There is no tail rotor on the Ka-26, it is coaxial.

[Ros 56]

This is the first time I see this gearbox, how do I know where it stands, and I know perfectly well what the Ka-26 is, I even took a ride in a traffic police once, but that was in the 70s of the last century.

[Konnick]

It is clear that the input shaft for the new engine was re-sharpened.

[Dimide]

Something fundamentally new or copied from existing ones as import substitution?

[Prisoner]

Hurray, EPRST! Ivanov, Petrov and Sidorov did cut the threads into bolts for a promising helicopter. Okay, there is a reducer. What's next? What else will please our population?

[Ros 56]

Well, what, we make excellent blades for the entire range of helicopter. And a lot of things escho.

[acetophenone]

Quote: Dimid

Something fundamentally new or copied from existing ones as import substitution?

Yes, do not care - if only it flies well and for a long time. We - not checkers, we - to go.

[dgonni]

Bomb! I’m wondering how any plant in the union could manage without diferambs, that he stupidly mastered the production of what is needed?
I'm not not for a new engine for vases and other puzotёrok.
I am in favor of the usual process that took place in factories with mats and frictions. But this was a normal process!
And then oops! We have mastered the gearbox! What a marvel! Yes, in the 60s and 70s, old grandfathers poured them into sand molds without any problems!
If there was a gut? It was a collapsible chill mold. Which by the way added to the strength and reduced handling.
But those people are no longer there!
And I strongly doubt that any thread can make a model from a plywood tree. And make a working casting!

[orionvitt]

Quote: dgonni

any plant in the union dispensed with diferambs

This was one of the problems of the Union, and now of Russia. For some reason, in the same states, the level of cheap PR is prohibitive, both for toilet paper and non-existent "super duper" missiles. And nothing, no one blathers, everyone admires, everything is fine, they can be. And here is the news about the new gearbox (a rather complicated piece of equipment, according to the level of complexity of development, not every country is available), and all the people who are scattered have already wept all their tears.

Yes, in the 60s and 70s, old grandfathers poured them into sand molds without any problems!

Do not confuse a specific organ with jam. Every machine and tractor has a gearbox, but not a single machine and tractor can fly.

[dgonni]

Unfortunately, you are too far from the production of the union of those times!
And they wrote nonsense!
Reducer? This is a simple task that at that time was solved by the technologist and the head of the shop!
And shove it like a progress?
Duc in the union everyone had to give heroes and prizes.
You just do not understand the level of decline in technical literacy in production!
Such news in the union? This is nonsense!
Yes, in a week, three types were cast and the technologists bent the mats that with such casting a lot of metal wasted!
Tin in one word!

[orionvitt]

The level of your technical illiteracy is not even amazing, but simply shocking. If not in the subject, it is better not to disgrace yourself, pass by.

Reducer? This is a simple task that at that time was solved by the technologist and the head of the shop!

[S. Viktorovich]

There was everything in the Soviet Union, but not everyone knew where to look. Gearboxes were designed by future engineers in the 2nd year.

[orionvitt]

Quote: S. Viktorovich

Gearboxes were designed by future engineers in the 2nd year.

Let's say not in the second, but in the third year and not aviation. However, the gear reducer is different. Helicopter gearbox, not every aviation design bureau will undertake to design.

[not main]

Quote: orionvitt

Quote: S. Viktorovich

Gearboxes were designed by future engineers in the 2nd year.

Let's say not in the second, but in the third year and not aviation. However, the gear reducer is different. Helicopter gearbox, not every aviation design bureau will undertake to design.

I would like to note that the Mi-26 took place precisely thanks to the successful gearbox! Although for the Mi-28 the gearbox (on the same principle) turned out to be, to put it mildly, unsuccessful.

[dgonni]

They learned to design them. TMM was not given to everyone, well, the scubents of the 2nd course were not aware of the capacities and loads with vibrations!

[Konnick]

Gearboxes were designed by future engineers in the 2nd year.

Usually the third. A graduate with a degree in gas turbine engines came to me for an interview. I asked him what kind of reducer he was doing in the course book, he said that he had forgotten, like it was two years ago. I didn’t say anything to him, but simply asked several employees (we had a common room) about their course students, which they did 10-20 years ago, they remembered everything, but this current graduate “forgot”. Everything is bought now. And the reducer becomes a super-super achievement ...

[Konnick]

Quote: orionvitt

Quote: S. Viktorovich

Gearboxes were designed by future engineers in the 2nd year.

Let's say not in the second, but in the third year and not aviation. However, the gear reducer is different. Helicopter gearbox, not every aviation design bureau will undertake to design.

Do you think you have made a constructively new gearbox on other principles?
It looks like they just mastered a new crankcase casting, such as injection molding instead of a shell mold, or the input shaft was changed for a different engine. What Kamov drew, what remains is not to subtract or add, an extremely uninformative article.

[Konnick]

The news hurt ... I even remembered an anecdote:

Terrorists kidnapped American, French and Russian engineers from defense enterprises.
After an hour of torture, the American explained the design of the American cruise missile.
After two hours of torture, the Frenchman handed over the scheme of the newest fighter.
After a week of torture, the Russian drew a nut in three projections.

[Freeman]

Quote: dgonni

And then oops! We have mastered the gearbox! What a marvel! Yes, in the 60s and 70s, old grandfathers poured them into sand molds without problems

Really "oops!"
Only in the picture is not the gearbox itself, but only a part of its cast housing. Casting which is really not a problem.
True, then, it will still be necessary to drill, mill and grind a certain number of all sorts of "holes and dimples" in it in order to put a certain amount of all sorts of "interesting things" in it.

Something like this

[Dkuznecov]

From promising to serial,
knowing the sluggishness of the state defense order - eternity.
Will lie on the table again.

[victor_47]

Well done! The gearbox was created. It remains to create bolts and nuts ...