JSC "Kamov" completed the outline design of the synchrocopter

A sketch project of a promising high-speed helicopter of the synchropper (or synchroopter) scheme with two carriers and one pusher propeller was developed by specialists of Kamov JSC. It is reported by TASS with reference to the presentation held by the developers.

American synchroopter Kaman K-MAX

According to published data, specialists from the Kamov design bureau have developed a draft of a promising high-speed aircraft of vertical take-off and landing of a synchroter scheme with a pushing propeller.

To date, formed a general view, layout and calculated flight performance of the aircraft

- stated in the presentation material.

A synccopter is a helicopter, the screws of which are mounted at a short distance from each other and rotate in opposite directions, while the trajectories of their blades intersect. In order for the blades not to collide, their rotation is mechanically synchronized.

The developers claim that the promising machine created according to this scheme has the following characteristics: take-off weight 6500 kg, payload weight 1000 kg, cruising speed 357 km / h, maximum speed 420 km / h, static ceiling 4700 m, dynamic ceiling 5600 m, 1228 km range.

A synccopter is developed in the passenger version, however, further development of a machine for the military on its basis is not excluded.

In the United States, Kaman K-MAX helicopters (flying crane) are created according to this scheme. These vehicles are used by units of the United States Marine Corps to deliver cargo.

Comments

[Partactiv]

Creepy looks ..... Well Kulibiny !!!!

[Spartanez300]

It is not clear why this ugliness is better than a conventional helicopter.

[Rzzz]

Structurally simpler than an aligner. If the Kamov sleeve with a double swashplate and an intermediate plate looks like something fantastic, then everything is much simpler. Two rotors are driven by one gearbox, and they have unpretentious APs, the only thing is that electronics are needed to control this miracle, well, now this is not a problem.

[Captain Pushkin]

Quote: rzzz

Two rotors are driven by one gearbox, and they have unpretentious APs, the only thing is that electronics are needed to control this miracle, well, now this is not a problem.

Synchropeters - helicopters with two rotors rotating in intersecting planes.
The first such Kaman helicopter - K-125 - took off in 1947. In 1951, its advanced version - K-225, flew. In the 60s-70s, the U.S. Navy was armed with helicopters with intersecting propellers. Somehow in those days, without electronics, they were controlled with screws ..

[Rzzz]

I know about Kaman. Yes, they were controlled, but the tasks were simpler, it was possible to solve the problem mechanically. Now maneuverability is needed, and more speed, and efficiency. Therefore, brains are needed.

[YOUR]

The main rotor is smaller and there is no tail rotor.

[Piramidon]

Quote: YOUR

The main rotor is smaller and there is no tail rotor.

In principle, all the advantages of a coaxial scheme, with a simpler transmission (but this is also debatable)

[loki565]

Maybe this arrangement has more carrying capacity. Aiyarians use Kaman K-MAX as an air crane

[venik]

Quote: loki565

Aiyarians use Kaman K-MAX as an air crane

=========
Not only!!! Actually, the first "synchrocopter" HH-43B "Kaman" company ("Kaman" - "Kamov" - consonant !!! It's funny) launched into series back in 1958 (!). It was used by the Air Force as a search and rescue helicopter. 201 vehicles were built.

TTH:
Sizes, m:
length with rotary screws 14,33
fuselage length 7,67
helicopter width 4,58
helicopter height 3,84
rotor diameter 14,33
swept area, m? 2 x 160
Engines: 1 GTE Lycoming
T53-L-11A
take-off power, kW / l. with. 850/1150
Masses and loads, kg:
maximum take-off 4150
normal takeoff 2950
empty xnumx
Flight data:
maximum speed, km / h 193
cruising speed, km / h 177
maximum rate of climb, m / s 9,15
static ceiling, m:
excluding the effects of land 4880
taking into account the influence of the earth 6100
dynamic ceiling, m 7010
range, km 810

[Pereira]

The Americans are cooler anyway.

[Invoce]

Quote: Spartanez300

It is not clear why this ugliness is better than a conventional helicopter.

Due to the coaxial propellers, Kamov helicopters allow to reduce the length of the helicopter and the weight (there is no tail boom and gearbox). , calculations showed an increase in the efficiency of this scheme in comparison with the traditional Kamov (coaxial)

[Piramidon]

Quote: Partactive

Well Kulibiny !!!!

The Germans built and tested a car of such a scheme (Fl.282 Kolibri "Kolibri") back in 1940. So "Kulibins" have nothing to do with it.

[Peter S]

"Sad". Full face view.

[sir_obs]

When the Americans couldn’t make the coaxial scheme, they also sawed such a damn thing and it was pretty big .. Only here is why Kamovites do it., It’s not entirely clear.

[Gardamir]

? Gardamir I said everything right?

To fuss, I even admit that this sarcasm will go. But seriously? Armata, when did you drive along Red Square? But to the troops no matter how. And this is a tour. When will the first operational model be, when will it enter the troops? You can continue to rejoice, just explain to what?

[You Vlad]

Quote: Gardamir

To fuss, I even admit that this sarcasm will go. But seriously?

But I’m quite serious! Let your criticism be taken into account! And so on April 24, 2019, so many units of equipment were released, so many were modernized, so many entered the troops! Did I say Gradamir correctly?

[Gardamir]

So on April 24, so many units of equipment were produced, so many were modernized, so many entered the troops! Did I say Gradamir correctly?

Almost. Absolutely no details needed .. Most of the articles on the topic of how many were sold abroad.

[You Vlad]

Quote: Gardamir

Almost. Absolutely no details needed .. Most of the articles on the topic of how many were sold abroad.

Here in the Ministry of Defense have already taken into account your criticism!

Quote: toha124

So this ... The Ministry of Defense publishes such data weekly. In the form of infographics. I’m in VKontakte looking at the official page. Straight in pieces

And here you see everything in a heap interfere

[Captain Pushkin]

Quote: Gardamir

So on April 24, so many units of equipment were produced, so many were modernized, so many entered the troops! Did I say Gradamir correctly?

Almost. Absolutely no details needed .. Most of the articles on the topic of how many were sold abroad.

In the 20s and early 30s, Dornier survived exclusively on orders from the USSR. And when there was a need for her aircraft in Germany, she switched to the supply of the Luftwaffe and the Navy.

[toha124]

So this ... The Ministry of Defense publishes such data weekly. In the form of infographics. I’m in VKontakte looking at the official page. Straight in pieces.

[Pajamas]

Quote: Gardamir

? Gardamir I said everything right?

To fuss, I even admit that this sarcasm will go. But seriously? Armata, when did you drive along Red Square? But to the troops no matter how. And this is a tour. When will the first operational model be, when will it enter the troops? You can continue to rejoice, just explain to what?

What troops, is there an order from the MO? The design bureau is developing a new type of machine for Russia, a conceptual design has been created that you are carrying what kind of troops, you are aware of the news and the reality in general, you understand the structure of the design bureau, it seems not, but of course you have to express your opinion, it is clear that these are comments and they are welcome, but you, in my opinion, wrote nonsense, you have the right to write them, I have the right to state this.

[Gardamir]

you are aware of the news

Now, if I was born yesterday. and today is such news, I would also jump.
Only now they blow to us from every iron that we need to arm ourselves here and now. In the meantime, "happy" news that our military equipment has arrived. to Turkey, Israel, Arabs, Indians, Malaysians.

[You Vlad]

Quote: Gardamir

Now, if I was born yesterday. and today is such news, I would also jump.

Tolley was in the USSR, they reported every day! So much came to the troops, so much was laid down, so many new projects presented! Am I rightly said Gardamir?

[Gardamir]

I'm right

Look, there was a good ruler, he brought us glasnost, pluralism, everyone loved him. And then they suddenly hated it.
Then there was another president. brought rights and freedoms, by the way his current one loves straight worship.
Finally, the current one optimizes Russia to the full, medicine, education and everyone loves it. Attention is the question of what is the difference between them and is it there?
Perhaps gentlemen who rejoice at the current "success" rejoice at the next collapse, as under Gorbachev and Yeltsin.

[You Vlad]

Quote: Gardamir

Look, there was a good ruler, he brought us glasnost, pluralism, everyone loved him.

Does this somehow apply to our criticism of VO? Oh well, you have your own unique style

Quote: Gardamir

Finally, the current one optimizes Russia to the full, medicine, education and everyone loves it. Attention is the question of what is the difference between them and is it there?
Perhaps gentlemen who rejoice at the current "success" rejoice at the next collapse, as under Gorbachev and Yeltsin.

So here it is, where the dog is buried! No need to rejoice, it is necessary to suspect! Everything is correct, it is necessary, keep it up, you won’t lead us on the chaff!

[Gardamir]

Do not rejoice, you have to suspect!

and answer?

[Piramidon]

Quote: Gardamir

The second article is about excursion troops. They used to write that in a few years some weapons would enter the troops. Now painted a picture and be proud.

Be proud of your achievements that your Styopa Poltorak calls back every day - voiced. And we really have something to be proud of.

[Gardamir]

- your voice

Are you writing comments in front of the mirror? I was proud of the Soviet Army. And here what you offer is proud of arms deliveries to other countries.
And stop raising your self-esteem in such a stupid way, you can even call me an alien. It will not push you to the truth a single step.

[Piramidon]

Quote: Gardamir

what you offer is proud of arms deliveries to other countries.

This is written by you explicitly with the aim of throwing your share of manure. Where in this article is there even a word about the supply of what is written about in other countries? Yes, and if we supply, then we produce competitive weapons.

Are you writing comments in front of the mirror?

Look at yourself in the mirror, Mr. Svidomo. Maybe fewer mournful songs from you will sound here.

I was proud of the Soviet Army

This means nothing. Your current rulers of Ukraine, also once served in the Soviet Army and may have been proud of it.

[MIG00001]

I’d like to explain what the advantage is the location of the screws.

[Observer2014]

Quote: MIG00001

I’d like to explain what the advantage is the location of the screws.

In production it’s cheaper. And to carry loads a little more

[YOUR]

In production, it will be more expensive. But the operation is cheaper. With a less powerful engine, it will show similar characteristics to a helicopter. Due to the lack of a tail rotor, lower fuel consumption, smaller rotor diameter. But screw synchronization complicates the design

[Freelancer7]

In my opinion, it was sewn to soap. Money for the project, money for tests, money for the argument, money for the prototype, money for the establishment of production .... What is the point ?! There are alternatives - Ka-62.

[YOUR]

Giraffe is big, he knows better.
Helicopters used to be considered an awl for soap. I read when in the 60s helicopters were presented for adoption. One combat aviation general said that I will knock this crap on the Yak-3 in two accounts, not like on current aircraft. I don’t remember offhand, but the Army didn’t want to take helicopters into service, especially after the accident where I died, I don’t remember the name, a friend of the deceased general said that the helicopter would be adopted only through his corpse. Khrushchev was then in the USA and he really liked the president’s American helicopter. This was a turning point. Helicopters went to the army. And now we have a very, very good helicopter fleet. So why do you think that synchrocopters are so pampering. The technology is developing, production capabilities are developing, it is quite possible that with the adoption of synchrocopters and tiltrotor aircraft, the entire helicopter fleet will change. There will be new models of machines that are now only in the minds of designers and science fiction writers.

[SHURUM -BURUM]

Is this a scientific mouth product? Then yes ... For the report will do.

[Vladimir 5]

The design is somewhat simplified (but has its own additions) and is lower in height compared to the coaxial scheme. But for some reason such synchrocopters did not spread. Correctly noted, in the absence of another, sketches have already gone for discussion, as finished products, - survived, or rather rolled under such a "wise" leadership and government ...

[Piramidon]

Quote: Vladimir 5

lower in height compared to the coaxial design.

But wider in width. So, at the expense of dimensions can be argued.

The design is somewhat simplified

Distributing the drive into two screws does not simplify the design.

[SHURUM -BURUM]

Distributing the drive into two screws does not simplify the design.
Absolutely right! The helicopter gearbox is the weakest link in any helicopter without it. I know this directly from the developers.

[Kasym]

Most likely, Alexander (MIG0001), there is no need for a rear screw. Enough for the blades to rotate in different directions.

[Krilovchanin]

The synchrometer is a variant of two helical cross circuits, but with maximally reduced screws. In this case, the advantages are indifference to the crosswind, as in the integrated circuit, but the possibility of overlap of the blades is excluded. Simplification of the design, because the swashplate is not needed, instead of it - the pushing screw. A large total area of ​​overcasting 2 screws with a smaller diameter is a more efficient use of power. This is what I, as a very not very expert, at first sight saw. About the shortcomings - in my opinion, not the best maneuverability at low speeds. Maybe there’s still, but I don’t see them (I’m far from special).

[Piramidon]

Quote: Krilovchanin

no swash plate needed

But how does he change the direction of flight?

[prodi]

for high-speed circuit is doubtful

[Kasym]

In my opinion, there is no rear screw and there is room for a pushing one.

[prodi]

for speed, the inclined screws are clearly worse than the coaxial ones, not to mention the single

[Kasym]

But for coaxial height is needed (for example, ship-based), as well as overlapping planes. The loss of energy in inclined planes is not very significant.

[Genry]

Quote: prodi

inclined screws are clearly worse than coaxial,

There is no likelihood of overwhelming.

[prodi]

well, ship folding for "tilted", too, does not seem like a gift (even without taking into account the less thrust to coaxial). But the frontal resistance should be the worst

[Genry]

Quote: prodi

well, ship folding for "tilted" doesn't seem like a gift either

The mechanism is the same.

Quote: prodi

But the drag should be worse than everyone

Why on earth?
Does the length of the blades change?

[prodi]

added inclined turbulence, even with a minimum angle of attack of the blades

[Genry]

Quote: prodi

inclined turbulence is added even with a minimum angle of attack of the blades

Are you talking about reactance? So it, with the same weight characteristics of the helicopter, the number and length of the blades, should not change significantly.

[prodi]

I mean that for speed, the flow pattern around reciprocal transverse oblique flows is clearly worse than others

[Genry]

Quote: prodi

the pattern of flow around reciprocal cross oblique flows is clearly worse than others

For lift, it will be significantly better than simply driving air in the same direction and area as the top screw.

[prodi]

Why on earth? The coaxial scheme is more effective than this

[Genry]

Quote: prodi

Coaxial is more effective than this

Only in cases where you want to hang more blades on the screw (for very large screws).
And so you have almost the same area as a single-rotor circuit, but two screws will give double reactance and you will gain little in traction.
In the case of synchronous (tilted) screws, the swept area of ​​the screws increases and you can reduce the number or length of the blades.

Most importantly, there is no likelihood of a lashing of the blades. Ka-50/52 is greatly reduced in flight, for this reason.

[prodi]

Quote: Genry

Quote: prodi

Coaxial is more effective than this

Only in cases where you want to hang more blades on the screw (for very large screws).
And so you have almost the same area as a single-rotor circuit, but two screws will give double reactance and you will gain little in traction.
In the case of synchronous (tilted) screws, the swept area of ​​the screws increases and you can reduce the number or length of the blades.
Most importantly, there is no likelihood of a lashing of the blades. Ka-50/52 is greatly reduced in flight, for this reason.

Well, somehow I don’t even know coaxial machines with more than three-blade propellers, apparently optimally.
The swept area of ​​the inclined screws, of course, is larger than that of the coaxial ones, but this is stupidly dull by their inclination. It is believed that the thrust coaxial loses only longitudinal and transverse.
By whipping - yes, but it was all about a high-speed helicopter

[Cube123]

Quote: Genry

Most importantly, there is no likelihood of a lashing of the blades. Ka-50/52 is greatly reduced in flight, for this reason.

I think that the main advantage of inclined screws should be manifested at high speeds. Due to the fact that the overturning force on the helicopter will be compensated. There is an effect that at a high speed of the helicopter, the blade going towards the movement receives additional lifting force (the speeds relative to the air add up), and the blade moving along the movement loses the lifting force (the speeds are subtracted). In a single-screw circuit, this overturns the helicopter, and for a coaxial circuit, it provokes a whipping. And the inclined screws will automatically compensate for this effect.

[KERMET]

Most importantly, there is no likelihood of a lashing of the blades. Ka-50/52 is greatly reduced in flight, for this reason.

All helicopters would have such aerobatics limits as the "cut-down" Ka-50/52

[TAOW]

It is sometimes thought, no matter what fate the Yankees befall in Vietnam (although they got there in full) if not I.I.Sikorsky. Only helicopters have more than 40 models and modifications, about 20 different variations of aircraft. UAV Sikorsky Cypher and Dragon Warrior. And yet, the school of the Americans is Russian ..

[san4es]

The synchrocopter is a helicopter whose screws are installed at a small distance from each other and rotate in opposite directions ...

Unmanned Kaman K-MAX in Afghanistan
An American helicopter designed specifically for the transport of goods on an external sling. Built according to the synchropper scheme with two intersecting rotors.
The scheme of a helicopter with intersecting rotors is the most effective when performing operations with vertical lifting of loads, as it provides a reduction in power consumption, structural mass, noise, vibration, maintenance costs.
The unmanned version is capable of transporting goods weighing up to 2,7 tons at a distance of up to 500 kilometers. The maximum speed is up to 185 km / h. In Afghanistan, the first unmanned unmanned flight took place on October 15, 2011, and the first supply of supplies took place two days later.

[bogart047]

in Arnie's voice "What are you?"

[boathouse]

The Americans made a helicopter according to this scheme in the 60s. But, it didn’t go beyond one model.

[Roma 1977]

The Germans had similar things back in the 40s.

[Aqr009]

Model Flettner Fl 265, designer Anton Flettner

[Runoway]

If I am not mistaken, seeing him, Sikorsky admitted an obvious lag

[Barmaleyka]

as I understand it, Americans can soon dissolve intelligence services as unnecessary?

[3vs]

Beautiful project!

[Aqr009]

Beautiful project!

Thank you very much for the scheme.
Something like a car "Victory" is similar.

PS
Exactly a year ago there was already an article on a similar topic:

 Show / Hide text

https://topwar.ru/137022-ssha-reshili-modernizirovat-sinhroptery.html#comment-id-7951372

[alexandrmakedo]

Quote: YOUR

The main rotor is smaller and there is no tail rotor.

Screws spaced around the edges of the case with an inclination in different directions, which reduces the lift vector of these screws. Danger of propeller impacting the ground when flying at low altitude.

[Tuzik]

This Kaman K-MAX, which in the picture, has such a huge keel, is it because of the screw circuit?

[Romanenko]

As far as I understand, either the mistakes of the Americans are not a decree for us, or on Kamov they figured out how to make a "box" for two shafts cheap and cheerful ...
They certainly have cards in their hands, but the syncopter, by default, due to the inclined arrangement of the planes of the screws, does not allow landing-landing with the engine running.
Maybe it's better not to experiment with this scheme?

[maximon2005]

It has long been invented. If ours decided on this, then they thought it over and the need matured for it ...

[ODERVIT]

Colleagues, do not stop. Good luck in the future stages of OCD.

[swzero]

it is not clear why such a scheme is better than already debugged coaxial?

[Lapunevsky]

1228 km flight range - impressive. In Rostov, it will fly up and fly to Moscow without refueling.