The United States will continue to test high-speed helicopter S-97 Raider

According to the portal defensenews.com, Sikorsky revealed the details of the crash of the prototype of the American high-speed helicopter S-97 Raider, and also described the future development of the Future Vertical Lift (FVL) program.

The accident occurred 2 August in the flight center of the company Sikorsky Development, located at the airport of West Palm Beach (Florida). The prototype worked out a hang in the framework of a test flight, but at some point the pilots had to make a hard landing.

According to Chris van Buyten, vice president of technology and innovation at Sikorsky, during a hard landing, the helicopter received “significant damage”, and both pilots got off with minor injuries, were able to muffle the engine and leave the car on their own. The damaged prototype, which has flown 20 hours and passed 100 ground tests, is now being restored and will continue to pass tests next year.

Initially, among the probable causes of the accident, a non-standard coaxial scheme of the main screw was called, but during the investigation this version was not confirmed. Sikorsky points out that the helicopter’s systems did not work properly, and instead of a soft landing, the car fell from a two-meter height. The developers call the problem of software and declare that they are already working to eliminate it. At the same time, Sikorsky claims that the first accident demonstrated excellent chassis performance, high safety of pilot seats and the fuel system.

Helicopter S-97 Raider - a promising development, which is created for the American army in the framework of the program Future Vertical Lift (FVL). Due to the coaxial scheme of the main and the presence of the pushing screw, this machine can reach speeds over 400 km / h and cover distances greater than 600 km. For comparison: the maximum speed of the Bell OH-58 Kiowa light multipurpose helicopter is 222 km / h. Tests "Raider" are of great importance for the helicopter industry, because we are talking about a fundamentally new machine with unique combat capabilities and speed characteristics.

Comments

[Topotun]

They are testing their beast, we are our (like Milevtsy and Kamovtsy also designing something), let's see what comes of this venture ....

[Maz]

And they have this first rotorcraft with a coaxial screw system. And we have a series. Still tormented by the guys.

[Abigor]

The propeller like Carlson's stuck in the back, really speed will increase. Maneuverability will decrease, but it is declared as high-speed.

[Gray brother]

Quote: Abigor

The propeller like Carlson stuck in the back, really speed will increase

It would be better if they stuck a turbine, it can twist the screw and blow back))) and no propeller is needed with all sorts of shafts, gearboxes and other unnecessary parts.
In addition, flaps could be installed to compensate for the reactive moment in an emergency.

[Aviator_]

A small series of helicopters without a tail rotor with jet rotor torque compensation (NOTAR scheme) manufactured by MD Helicopters has been successfully operated (MD 520N, MD 500, MD 600N). At the end of the 80 we had a project of the same Kamov Ka-118 company scheme, but we could not do it. The scheme showed itself only on light helicopters, for speed it does not work.

[Gray brother]

Quote: Aviator_

The scheme showed itself only on light helicopters, for speed it does not work.

For a coaxial circuit, the reactive moment does not need to be compensated. Nada blow back)))

[Aviator_]

Naturally, therefore, the NOTAR scheme is used only on machines with one rotor.

[Gray brother]

Quote: Aviator_

Naturally, therefore, the NOTAR scheme is used only on machines with one rotor.

I am aware, but on a coaxial scheme you can simply direct the jet stream back, and not invent a gyroplane in a new way.

[Aviator_]

The main obstacle in creating a high-speed helicopter is the rotor. Without it, the device is not a helicopter, but at the speed of 400-450 km / h something needs to be done with it, no additional rear engines will give anything special.

[Gray brother]

Quote: Aviator_

the device is not a helicopter, but at a speed of 400-450 km / h something needs to be done with it

PSV 400-t reached and heated, even exceeded without any propellers in one place.

[Aviator_]

This is good, especially if you recall that the Mi-24 has long had a speed record of 360 km / h

[Aviator_]

By the way, Ka-118 was thought with one rotor, which for Kamovtsy was a departure from their traditional solutions

[jonhr]

This is the most powerful comment in recent times.

[d ^ Amir]

what will come of this venture ....

Good afternoon!!! with different approaches to the production of cars it will be like with the F-35 and Su-57 ... they will announce the release of the car and will eliminate jambs for a few more years, our car will fly right away ... but for a few years later ... what of the approaches I won’t tell you the right one ... but we don’t have as much money as sasch ...

[steelmaker]

Wishes. When it comes to promising developments, I would like the author at the end of the article to simply mention that we also have such developments or are not underway.

[gridasov]

Well, it’s understandable when engineers, without delving into the essence of the physical process, will drive the car for decades and then there will be no demand from them. But physicists must understand that the physical processes on the blades with this concept of interaction with the flight environment cannot be promising. New algorithms and fundamentally new concepts of propulsion are needed. And they are. Therefore, the Americans, the Russians, and this is obviously too high an opinion about their abilities.

[Topotun]

Behind the abilities of both those, these are the SCHOOL. And it’s very serious. Do not underestimate them. And the experience of developing such systems, with a huge number of products that have not gone into the series, but nonetheless implemented in metal. Therefore, the problems of these machines and their bottlenecks they represent.

[gridasov]

You can agree that the SCHOOL really exists, but just do not forget that this is a SCHOOL of knowledge about low-potential interactions. There are practically no concepts of high-potential interactions. Is it really not clear that the fundamental foundations of all these secret and non-secret machines and engines, and especially the movers, have no fundamental differences. Then what can they imagine if they cannot move to a new stage of development. Or someone said that development ended there. But on the other hand, I understand how difficult it is to imagine that there may be a completely new technology. Worldly vanity separates people from understanding the fundamental foundations of the real world — especially when it comes to specific knowledge and a completely new path of development.

[Aviator_]

Bravo, Gridasov, you've been gone for a long time! I really miss you. Go ahead, eliminate the “physical processes on the blades at such a concentration of interaction with the flight environment” and we will be happy!

[gridasov]

The irony in your words is obvious, but I will clarify that the conversation is about methods for creating the maximum pressure force of an elastic flow. This means that at the point of contact of the flow transformed on the blades and that part of the medium that directly contacts this flow from the blades, it must be maximally not only polarized, but also harmonious in interaction. Why are modern turbines noisy? Because we do not take into account the break-through moments of the rotation of the jets in the part where the contact occurs and the flow hits the wall of the external environment as a target. Hence the huge noise. Moreover, if the jet is introduced tangentially, then the interaction processes have a harmonious form. . And further I will say that the whole process from the moment the “exaggerated” air particle enters the turbine blade and until it breaks off, has motion algorithms not only in the movement of this particle, but also in interaction with other groups of particles at each sequential point of the process . Therefore, when we examined this process using our own methods, then many phenomena became obvious. In general, the irony is out of place.

[gridasov]

I will say more, or rather again, I repeat that the turbine in general should be considered as a unipolar electric. an engine, but only amplified by effects caused by the polarization of the surfaces of the flow by elastic flow. Then it becomes obvious that you can essentially create a turbine with a fundamentally new quality of result.

[gridasov]

I do not participate in another thread of discussion about the engine built on the concept of EM Drive. So, it is our design that allows us to solve all the problems of increasing the polarization of the ionized stream and the possibility of creating a process without supplying external energy, and the possibility of generating it for self-feeding.

[Topotun]

Sorry, but you confuse concepts a little. In this thread, we are talking about helicopters (i.e., an aircraft with a rotary propeller mechanism for generating lift), and not about turbines. For example, the MI-4 engine of the helicopter was generally a piston motor .... And the question is HOW to cut high speeds of the machine, provided that the screw creates a lot of resistance and does not exceed the mechanical load on the screw. Well, no one is discussing the type of engine of this helicopter here ... And our design bureau has long received a picture of the flow around a blade by the air flow in various flight conditions. Well, do not underestimate our designers.

[gridasov]

I do not confuse concepts. The conversation should be about creating a machine capable of flying faster than modern helicopters, but with all the capabilities of a helicopter and more. Such opportunities for the use of the blades have reached a critical level. Therefore, it is necessary to use completely new principles and the movers themselves, which will open up the prospect of development and will be real in the possibility of application. . That's what I’m talking about. This means that any discussion of the principles based on the use of blades and modern turbines as key elements for expanding the flight parameters of an aircraft is simply a “crushing of water in a mortar”.

[Bronevick]

Very interesting unit.

[APASUS]

What can be honestly envied by the Americans, without croaking, is the allocation of funds for research and development. Here they are great, sometimes their ideas border on insanity, but as a rule they turn into a reserve.

[Ingvar0401]

Pros .... and Sikorsky at one time ... A sensible specialist .....

[Aviator_]

Sikorsky in America went bankrupt 2 times - in the 1929 year, during the Great Depression, and in the 1939 year, during its second wave. After the 1929 year, he began to make flying boats, and successfully, but he was eaten by the company Consolidated, which produced the famous Catalina. After that, he took up helicopters, which then no one needed at all, his prototypes showed themselves well in the southeastern theater, which allowed to finalize and deploy a series that showed itself perfectly in the Korean War. Unfortunately, we didn’t have such a calm theater of operations, all Kamov’s gyros were knocked out in the battle of Smolensk in 1941.

[gridasov]

I suppose you are now asking .... and "gridasova"

[Brut]

Have you moved?

[gridasov]

I make the last effort so that Russia still has the main claims for future dominance in the world. It is obvious to me that breakthrough discoveries that are the basis or point of repulsion to the future are, nevertheless, achievements of the mind of individual individuals. Absolutely not many people are able to resist the pressure of information and be its derivative, but to be able to use the information in order to develop. Therefore, technologies for analyzing big information data that expand our understanding of the real world is the basis for understanding technologies for efficient movement in space and the atmosphere and any environment. People just need to make a little effort to understand that not everything can be imagined as we see it now. At the same time, we rely on modern analysis technology, and it can be completely different.
And as for the move, it is already a matter of time.

[Alexaker]

Conder will be removed from the rear, it may stop falling)) it confuses the axis of forces))