Boeing and Sikorsky will jointly make a high-speed military helicopter based on the X2

28 February 2013 was announced that the American corporations Boeing and Sikorsky Aircraft created an alliance to jointly design and build a demonstrator of a high-speed military helicopter of a new type, designed to offer to the US Army competition for the Joint Multi-Role (JMR) program, which is part of an extensive project on the creation of a new generation of helicopters Future Vertical Lift (FVL).

The helicopter will be developed by Boeing and Sikorsky based on the innovative high-speed demonstration helicopter Sikorsky X2, using a combination of coaxial propeller and pusher propeller. The maximum speed of the new helicopter, as stated, will be 230 miles per hour, while compared to the current Sikorsky UH-60 multi-purpose helicopters, the new machine must have a larger combat range and 60% improved performance for hot and mountain flights . Flight tests of the prototype demonstrator of the new helicopter must be launched in the 50 year.

The "Initiative" Future Vertical Lift (FVL) has been explored by the US Army since 2004, suggesting the creation of new types of helicopters designed to replace the current main aircraft with the American Army in the future. aviation - helicopters of the Sikorsky UH-60, Boeing AH-64 and Boeing CH-47 families. The beginning of the arrival of new-generation machines is expected in 2027–2035, with priority being given to the program for creating a new multi-purpose Joint Multi-Role (JMR) helicopter, which Boeing and Sikorsky are planning to develop their own version of. It is expected that the US Army will send out requirements for the first phase of the creation of the "technology demonstrator" JMR (JMR Technology Demonstrator (TD) Phase 1) March 6, 2013.

An image of a new generation high-speed multipurpose helicopter co-created by Boeing and Sikorsky Aircraft under the program of the US Joint Multi-Role (JMR)

Comments

[fzr1000]

Another expensive prodigy.

[ShturmKGB]

Programs for the introduction of high-tech military equipment in the United States have turned into a banal promotion of loot from the state ...

[Vladimirets]

ShturmKGB

turned into a banal promotion of loot from the state ...

And what for then the news minus? It seems they should be happy.

[kontrol]

just like ours

[starshina78]

How are they going to make coaxial screws? After all, except for Kamov, no one in the world has been able to make such a helicopter so far. It is very difficult .

[FID]

Quote: starshina78

How are they going to make coaxial screws? After all, except for Kamov, no one in the world has been able to make such a helicopter so far. It is very difficult .

A coaxial helicopter in 1914 was built by some Argentine. Sikorsky X-2 - flying helicopter with coaxial propellers. This is not the prerogative of Kamov ...

[Samaritan]

Back in 2005, Sikorsky announced the construction of "the fastest helicopter on the planet." It should have taken off by the end of 2006, but, apparently, even such a renowned company had to torment itself to solve technical problems that inevitably emerge during the birth of something fundamentally new.

Now, as the Sikorsky press release states, the demonstrator successfully passed ground tests with rotation of the propellers, and the first flight is next in turn.


An ordinary helicopter, a tiltrotor and an airplane cannot have both a good ability to hover and high speed at the same time. The new car (in the figure, it seems to fall out of the chart) should successfully combine the "role" of a dragonfly and a swift (illustration by Sikorsky Aircraft).
Gizmag reports that a new rotorcraft from Sikorsky, capable of accelerating to a record 474 kilometers per hour, should take off later this year.
Already in its appearance, one can easily guess what the main principle of the invention is. The machine, equipped with two counter-rotating lifting screws, is complemented by a tail propelling propeller. On it, a reverence towards the plane is exhausted.

This is called X2 technology, and the rotorcraft, about to appear in the sky, is the X2 Technology Demonstrator.

Each of its main rotors has four blades, and a pushing screw has six. All three are driven by a single engine - the turboshaft LHTEC T800. Of course, in the future, a similar twin-engine machine can be created.

[Misantrop]

Quote: starshina78

It is very difficult

The difficulty is not in the manufacture itself, but in providing a guarantee against their whipping at various operating modes. And especially - in the conditions of a powerful incident side stream at high speeds

[atesterev]

They have already done ... Do you really think that our Ka-xx did not fall into their hands? Plus watch "Sikorsky X2" and you will see something interesting!
In general, stay tuned for more technical news.

[Misantrop]

Quote: atesterev

They already did ...

"Black Shark" - also not a cinematic copy, quite a serial sample. But they did not manage to solve this problem until the end on it, there are a lot of restrictions on maneuver (precisely because of a possible clash). But she does not have a pushing screw (i.e. there is no problem of side flow)

[atesterev]

I'm not saying that the X-2 is a serial copy. I say that they made their experienced X, and on this basis they will move forward. In addition, compare our 50 Ka-52 and more than 1800 Apaches !!! So for our helicopter there is an uncowed field ... In no case do I want to lower the level of development of the Ka-50, Ka-52, but as they say, feel the difference. But this is also the price of each instance ...
The Yankees approach everything quite thoroughly, and we are somehow chaotic, so we have a damn cloud of different weapons systems and so on

[Misantrop]

Quote: atesterev

Yankees approach everything in sufficient detail

Why not approach it in detail if there is funding and the situation in the country is stable (I don’t say "good", you can adapt to any one if it does not change for a long time). Can you remember such a thing within Russia over the last couple of hundred years?

[Avenger711]

There are a lot of restrictions on maneuver for any technique by definition. Even on the Su-27, you cannot complete a cobra without disabling the angle of attack restriction. As for the flapping movements of the blade, then you, like all "milierasty", simply keep silent that the helicopter of the classical scheme simply chops its tail boom with the subsequent flight in a spiral to the ground. However, high speeds do not threaten the classics, since the main reason for limiting the speed of the helicopter is precisely the loss of lift on the retreating blade. You can even attach an engine to the Mi-27 from the Su-8, you still don't fly away faster than 350-400 km / h.

[MILITARY RF]

let them do it and then brag

[Lopatov]

You already have a working sample, right?

[Tjumenec72]

There is a technology demonstrator Sikorsky X-2

[patsantre]

And who is bragging about it? It is fashionable here to say "will surpass all existing analogues" about a technique that has not really begun to be developed ...

[imperiologist]

a new "cut" of funds for another "superweapon" such as stealth and lasers))

[Tjumenec72]

In this case, a justified and promising direction in the field (if you do not go deep into all sorts of stealth and gravitaps ) there is nothing revolutionary here, ours are also working on it.

[Tjumenec72]

Kamovites need to do something similar ...

Not all the same old Mi-8 puff)
There is nothing fantastic here - it is quite feasible

[SSR]

Thank! I didn’t know that ours think the same over such.

[atesterev]

But does our Moscow Region know that they need to do this? Any student will be able to draw a picture or a cartoon in 3ds max, but to get this picture to metal, God forbid every hundredth ...

[Pimply]

Do you suggest not building a new one?

[atesterev]

There is a feeling that there must be a reasonable balance between "want" and "can". For example, the F-35, it seems to me, is already on the brink. Probably it was easier to make two different airplanes (one for the Navy and the Air Force and one for the ILC) than to fight all this universal burden!

[Jurkovs]

There is one ambiguity in the description of the F-35 (with vertical takeoff). The Amers stated that the lifting force of the front end of the machine is created not by the jet stream from the engine, but by the fan that drives the air. How is it done? If you twist the electric motor. then what are its characteristics, and where does it take energy from. If in this matter amers have solved some technological problem, then they can apply it on helicopters. And then the helicopter will start to look like in the movie "Avatar" and the speed will be over 500.

[Tjumenec72]

It is fantastic)
The Fu-35 is responsible for the lifting force of one engine

[APOCALIPTIC]

I’ve cut it better on my own technologies than cut public goods and withdrawing money to foreign banks, which are successfully and successfully done in Russia

[Tjumenec72]

Oh damn and UWB means differently? you at least look at politics aple ...
And the Cayman Islands whose nest egg ...

[Download Do Re Mi]

Yeah! Babloraspil is planned not weak in the USA!

[valokordin]

Quote: MILITARY RF

let them do it and then brag

Maybe it's bait for Russia, like Reagan's star wars.

[patsantre]

Not so large-scale and promising is the program to be a bait.

[TS3sta3]

and what about "smallpox"? not good anymore? not a wunder
and what's in this X2 of the new generation? push or coaxial screw? ah, I understand this is a new generation of budget cuts.
if only the Chinese learned to do working projects, otherwise buy-sell and steal-kill everything.
yes, America was blown away, to the level of world mockery it sank. and how much more is she tormented?

[FID]

Osprey is not a helicopter, it is a tiltrotor - a hybrid of a helicopter and an airplane.

[TS3sta3]

I will say even more: an unfinished idea, nonsense. into the development and production of which the Pentagon poured huge funds, the result was a civilian transport that did not find application on the battlefield (just like the F-22). although the idea itself, if refined, will give a huge advantage. But, the budget for "small-scale" has already been cut and used, and the fact that this pepelats did not resist the military ... but who will ask them if there are such grandmothers spinning around here.

[Windbreak]

Quote: TS3sta3

at least learn from the Chinese how to make working projects

Just the Chinese are copying European helicopters

[FID]

But the prototype Sikorsky X-2 flew, although the program was closed in 2008. And the decent speed is 200 knots cruising and the maximum is 220 knots (355 km / h).

[Lopatov]

In a world like the British Lynx holds the speed record? 400,87 km / h. If overtaken, then there will be an aircraft of such a scheme.

[FID]

In the summer of 2010, the X2 set an unofficial world speed record for helicopters - 415 km / h (the official record (400 km / h), which is still held, was set by the British Link in 1986). In September, he developed a speed of 460 km / h.

[Ascetic]

Quote: SSI

In the summer of 2010, the X2 set an unofficial world speed record for helicopters - 415 km / h (the official record (400 km / h), which is still held, was set by the British Link in 1986). In September, he developed a speed of 460 km / h.

Advancing Blade Concept ABC According to ABC, the lift is determined by the strength of the advancing blade, and is not limited by the capabilities of the retreating blade.

For a helicopter of classical design, the lifting force of which is limited by the capabilities of the retreating blades, there comes a technological speed limit of approximately 400 km / h. However, a helicopter with ABC technology can safely continue acceleration - even after the lift on the back side disappears, on the upcoming side it will continue to grow. The concept has already proven its viability in an experimental helicopter Sikorsky S-69. Using two jet engines creating horizontal traction, the vehicle accelerated to 518 km / h, relying on the lifting force of the advancing blades of the coaxial screw.
The speed of rotation of the bearing rotors of Sikorsky X2 is automatically reduced starting at a speed of 390 km / h. At maximum speed, which is 474 km / h, the deceleration will be 20%. The fact that the horizontal flight speed is not determined by the rotors and the lifting force is used as efficiently as possible allows the rotors to rotate very slowly, and the helicopter to fly very fast.
Details here

Quote: SSI

But the prototype Sikorsky X-2 flew, although the program was closed in 2008. And the decent speed is 200 knots cruising and the maximum is 220 knots (355 km / h).

I wonder why they closed the program in my amateurish opinion with such a promising technology?

[FID]

Money, Stanislav, money! Sikorsky failed to convince the Pentagon of the usefulness ...

[Ascetic]

Quote: SSI

Money, Stanislav, money! Sikorsky failed to convince the Pentagon of the usefulness ...

The program was conducted even before the crisis. Now it’s for sure you can forget about X2 about sequestration of Pentagon spending

[GP]

Quote: SSI

In the summer of 2010, X2 set an unofficial world speed record for helicopters - 415 km / h (official record (400 km / h)

This camping trip


noticeable shaking in the cockpit

[GP]

Judging by the picture, the whole point of the idea is to abandon the non-pushing or as it is technically correct, when the vertical rise and horizontal movement is carried out with one screw, axis deviation; the functions are divided into the main bearing - only vertical lifting and holding in the air, and a pushing screw.
What's the point? Or is it a gyroplane with a helicopter take-off.
There is something in this design, but it’s not entirely clear what

[TS3sta3]

the main idea is speed. can be done as a "small" (envelope), or as here - add a pushing screw.

[Tjumenec72]

Something is too clever with the theory) It's simple: the coaxial design of the carrier (due to the fact that the screws rotate in opposite directions there is no need for a tail rotor) + added a pushing screw (it is only to give additional acceleration). THIS IS NOT A FAT!
But the problem is that at a speed of ~ 400 km new difficulties appear (flow disruption seems to be) roughly speaking for helicopters of the standard scheme this is the limit ...

Knowing people will correct me)

 Show / Hide text

Occam's Blade

The technological limit of the speed of a helicopter is determined by the difference in the speed of the advancing and retreating rotor blades relative to air. The speed of the helicopter is added to the speed of the advancing blades and is subtracted from the speed of the retreating blades. If the angle of attack of the blades on the advancing and retreating sides of the rotor remains unchanged, the lifting force on the advancing side will be much larger than on the retreating side, and the helicopter will roll over. The swashplate of the helicopter of the classical design is designed to compensate for this difference by cyclically reducing the angle of attack of the blades on the advancing side and increasing on the retreating side. This means that under no circumstances can the screw realize its full potential for lift: even with the maximum angle of attack of the blades of the retreating side, the lift of the advancing side will be far from the maximum possible.

Just as wastefully we handle lifting force, forcing the helicopter to fly forward. To gain speed, you have to increase the angle of attack of the blades in the rear of the rotor and reduce in the front. The maximum angle of attack of all the blades, as well as the maximum possible lifting force, we will not get.

Interestingly, in coaxial helicopters (most Kamov models) almost the same swashplate is used for both propellers as in single-rotor machines. Rotors rotating in opposite directions compensate for the loss of lifting force on the retreating blades without the help of a swashplate, so the Kamov circuit surpasses the classical one in terms of power supply. But the need to create horizontal traction using rotors still makes an energy compromise.

In the coaxial Sikorsky X2 circuit, the swashplate does not carry compensatory functions. The rotors are not responsible for creating horizontal traction and compensate for the mutual tendency to roll, so there is no need to cyclically change the pitch of the screw. Both the up and down sides of the X2 rotor always develop maximum lift. Sikorsky experts call this technology ABC (Advancing Blade Concept). According to ABC, the lifting force is determined by the power of the advancing blade, and not limited by the capabilities of the retreating one. This means that the helicopter will become more economical and will be able to cover long distances without refueling. But the main thing is that in comparison with the helicopters of the usual schemes, he will be able to maintain height at a lower speed of rotation of the main rotor. And this is one of the determining factors for maximum speed.

[Tjumenec72]

and continuation

 Show / Hide text

At a certain horizontal flight speed, the speed of the retreating blade relative to the incoming air flow, and hence the lifting force, become equal to zero. For a helicopter of classical design, the lifting force of which is limited by the capabilities of the retreating blades, there comes a technological speed limit of approximately 400 km / h. However, a helicopter with ABC technology can safely continue acceleration - even after the lift on the back side disappears, on the upcoming side it will continue to grow. The concept has already proven its viability on the Sikorsky S-69 experimental helicopter. Using two jet engines creating horizontal thrust, the vehicle accelerated to 518 km / h, relying on the lifting force of the advancing blades of the coaxial screw.

When the tips of the helicopter blades approach the speed of sound, the resistance to rotation increases sharply. This could be the next speed limit for a helicopter. The speed of rotation of the bearing rotors of Sikorsky X2 is automatically reduced starting at a speed of 390 km / h. At maximum speed, which is 474 km / h, the deceleration will be 20%. The fact that the horizontal flight speed is not determined by the rotors and the lifting force is used as efficiently as possible allows the rotors to rotate very slowly, and the helicopter to fly very fast.

Sikorsky X2 control system - fly-by-wire. None of the controls has a mechanical connection with the actuators - the pilot only gives commands to the computer that controls the servos. Electronic control made it possible to implement an active vibration suppression system, intelligent pitch and rotor speed control, a unified system for monitoring the technical condition of the machine, and a simple transition to autorotation in case of engine failure. All screws are driven by one LHTEC T800 turboshaft motor with a capacity of over 1000 kW. The overall pitch is controlled by electric drives built into the hubs of the jointless rotors. By the way, the screws themselves are made of composite materials and are characterized by an improved ratio of lifting force to resistance due to the innovative shape and profile. The X2 coaxial screw sleeve will be enclosed in an aerodynamic fairing, which significantly reduces the aerodynamic drag of the machine at speeds above 400 km / h.

It is a common misconception that the Sikorsky X2 does not have a swashplate at all. You can verify the opposite yourself by carefully reviewing the photos of the machine. This node is not easy to see, because the cyclic pitch of X2 is only adjustable for the lower rotor. To control the roll and maneuver at low speeds, this is quite enough - because the bearing rotor does not participate in the creation of horizontal thrust in cruise flight.

[Tjumenec72]

By the way, the Kamov prototype ...

[APASUS]

Americans have finances - and that's enough

[Hoist]

Rethinking gyroplane?

[atesterev]

This time, the plane is a rethought Chinese kite!

[bremest]

A good idea and our Kamovtsi may well realize this idea faster than the Americans. To increase the lifting force, one could put wings like on an MI-24 and wipe the nose of the adversary forward ....

[Tjumenec72]

Do not forget the helicopter is not a plane.
At speed - yes there will be an increase, but on the contrary, it will decrease on hovering because the area will decrease. Because they are used on the attack concept of a helicopter.

[fzr1000]

What is the difference from the Ka 92? Its creation uses the latest aerodynamics of coaxial screws and modern technology. The helicopter is capable of reaching a maximum speed of 500 km / h and flying at a range of up to 1400 km. In Russia, the Ka-92 helicopter will be in high demand for operation in hard-to-reach areas.

By the way, can Sikorsky fly sideways? Do the screws tilt?

[Tjumenec72]

It differs in that they have a flying demonstrator (which, by the way, worked out a flight program, and the data is processed), and we have a beautiful layout) and some experience in the coaxial scheme.

[rolik]

Quote: Tjumenec72

and some experience in coaxial design

I hope this is a typo about some experience in a coaxial circuit. Kamovtsi are legislators in helicopters with a coaxial propeller scheme, but mattresses are catching up.

[Tjumenec72]

You need to understand how in quotation marks, such as a dog eaten on this)
Not exactly reflected the train of thought ...

[homosum20]

Let them practice. It’s good for them. We will need to - do it.

[fzr1000]

This is understandable without you. As for "some experience" in the coaxial scheme, I'll leave it to your conscience. How is it fundamentally different? Yes, nothing. And it is still unknown whether this "bird" is needed.

[fero]

In aviation, a felt boot, tell me, is the idea of ​​a pepelats from the film "The Sixth Day" with Arnold muddy or is there something real in it?
http://www.youtube.com/watch?v=Fu71aWJ4S9g with 1: 05
http://www.kinopoisk.ru/picture/1491343/

[Tjumenec72]

You about this

There was such a program for half-sat Canard rotor / wing called.
The idea was such

they were told expensively (for ospri - series number 2), they decided to at least at least maybe so

There is a technology demonstrator (radio-controlled)
X-50A Dragonfly Canard Rotor / Wing prototype

Ours also recently pleased us with the layout.

[fero]

It is about this thing aha) Thanks ... well, even if it’s expensive for amers, then the time has not come yet

[White]

The first two pictures are mock-ups for the film "The Sixth Day" with the Schwarzeneggers in the lead role.

[Storyteller]

This thing is actually called rotorcraft. The joy of this scheme is that he does not need a swashplate, like a helicopter. Variable pitch screws are used for vertical lifting. If a rotorcraft with one lifting screw, the tail rotor has the ability to rotate around a vertical axis, or it has an apparatus for changing the direction of air flow for maneuvering in place. The complexity of these mechanisms compensates for the simplification of the rotor hubs. Rotorcraft with spaced propellers have the same problem. The big plus of the scheme chosen by Sikorsky is that the on-site maneuver can be controlled by means of a counter change in the steps of the coaxial VIS. Those. when increasing the pitch of the screw of the right rotation and decreasing the pitch of the left, a moment arises, turning the rotorcraft to the left, the lifting force does not change. The rotorcraft is a hybrid of a helicopter and a gyroplane, because takes off by helicopter, and after gaining speed it flies like a gyroplane, saving fuel slightly. The problem with high-speed rotorcraft is that when a certain speed is reached, the rotor blades moving towards the stream have a speed exceeding the speed of sound at the ends.

[Hedgehog]

fzr1000,
Why did you ask for it? Following your logic, we can say that jet aviation in the mid 40s of the last century was also a powerful pumping of money!
This is a pretty promising concept and it is also being implemented in our country. This is progress, not a question.

[fzr1000]

It is not very clear what to do with this concept. So far, the gain is only in speed (insignificant) and in range. But with the helicopter qualities of this concept, not everything is clear. Can he fly sideways? The complexity of the design, too.
Do I need to spend money on it now? Maybe it is better with this money to accelerate the production of helicopters already adopted for service?
I do not know.

[Storyteller]

Winning in speed and range is no longer a small plus. And flying sideways ... Is it necessary? Although, theoretically, a rotorcraft can fly backwards.

[kontrol]

from all of the above, we conclude that this flying garbage is quite a dubious undertaking. the gains (so far) both in speed and in range are insignificant, but denyushki to raze is a very suitable idea. there are no fundamentally new ideas, everything has already been invented by us (except for "razderbanit "-then, of course, we learned great from our Western colleagues)

[Krsk]

And what? The vast experience of creating the F 35 will not be in vain. Then you can still create a jumping tank. and hamer with square wheels ...

[sashka]

If only so .. We need MOVEMENT .. And stirring up the "ideas" of our fathers, the case is "dead."

[sashka]

People think in the FUTURE .. And they don’t remember the PAST .. Well, and we somehow "pull ourselves up" .. Stupidly true ??? .. And when they "shout" that we have everything scheduled (cut) until 2060, it only brings a smile. .Who does "GLONAS" have anything ?? And with that problemma.
Let us rejoice in OUR SUCCESS, and not rejoice in the problems of OTHERS. Urya anyone can shout. But what to do? This is a problem .. Are we buying from India? Because all their "wasted" It remains only to "crap" on others .. You can’t live in the PAST, THINK ONLY FORWARD ..

[Genoezec.]

Speed ​​Helicopter! I wonder if it will be faster than our counterpart?