Military Review

China unveils stealth helicopter concept based on American Black Hawk

13

The author of The Drive magazine Tyler Rogoway believes that the PRC's desire to create stealth helicopters looks quite natural in the general context of the development of stealth technologies in the Middle Kingdom. Not so long ago, it became known about the development of a stealth helicopter model, which is being carried out by the Chinese Institute for Helicopter Research and Development, a subsidiary of the Chinese aviation corporation (AVIC).


Having studied the photos of the model that got to the press, Tyler Rogoway concludes that the shown helicopter is, apparently, a version of the adaptation of the Chinese Z-20 medium-duty helicopter, which in the United States is considered a clone of the H-60 ​​Black Hawk helicopter.

History creation of the Z-20 helicopter is unique in itself. In the 1980s, when the Cold War was still going on and the United States viewed China as a tactical ally against the USSR, including in the confrontation in Afghanistan, a number of American weapons were exported to the Celestial Empire. However, after the events in Tiananmen Square in 1989, the export of military equipment from the United States to China stopped. But American helicopters were taken as the basis for creating a multi-functional platform for the People's Liberation Army of China.

In fact, attempts to modify the H-60 ​​Black Hawk into a stealth helicopter are not unique. Stealth helicopters are also being developed in the United States. According to Rogoway, the US stealth hawks became famous for their participation in the 2011 raid to assassinate Osama bin Laden.

China unveils stealth helicopter concept based on American Black Hawk

As for the Chinese developments, even earlier, the American observer writes, there were signs that Beijing was working on the design of stealthy helicopters. But there have been more rumors about the development of stealth helicopters than true information. It would seem that China will have to make up a lot before releasing an unobtrusive copy of the Z-20. But the capabilities of the Celestial Empire should not be underestimated.

Tyler Rogoway believes that Chinese developments are quite real, and here's why. First, China, according to the observer, has long been engaged in industrial espionage, stealing new technologies from the United States. Over the past decades, Chinese intelligence agencies have managed to ferret out a huge amount of secrets of the American aerospace industry.

Second, the Chinese are rethinking the experience of using the Black Hawks in Operation Neptune's Spear in 2011. One of the helicopters lost its tail section. The Pakistani military covered the wreckage of the helicopter with a cloth and then secretly removed it from the scene. But it was too late: reporters were able to get photographs showing the previously hidden US stealth helicopter technology. Two weeks later, the United States still forced Pakistan to return the wreckage of the helicopter. But those days that the tail was at the disposal of the Pakistani military might well have been enough to familiarize the Chinese engineers with it.

According to Tyler Rogoway, thanks to the tail of the American helicopter, China has gained extensive knowledge in the field of materials science, production methods, and helicopter configuration. In the hands of Beijing was a lot of highly classified know-how to create a copy of the Black Hawk. The loss of the tail has increased China's knowledge base on stealth helicopters by at least a decade, the columnist points out.

Naturally, China simply could not help but take advantage of such a chance. As a result, a conceptual model appeared, reminiscent of an American helicopter, but with some innovations. According to Rogoway, the Chinese modification of the Z-20 helicopter in question has a trapezoidal airframe, and the exhaust appears to be directed into an enlarged tail boom and out of the upper ventilation system to minimize the infrared signature.

The tail of the helicopter looks less convoluted than that of the American Stealth Hawk. Rogoway believes that this may be due to the desire of the Chinese to reduce the radar signature. There is no doubt, the American observer stresses, that China will still implement the concept of a stealth helicopter, given the scale of investments that the PRC leadership is making in the development of the aerospace industry.
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Photos used:
Twitter / East Pendulum
13 comments
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  1. Ramadan
    Ramadan 1 June 2021 09: 22
    +5
    The strategy of a nimble C grade: if you don't know the answer yourself, then find it from someone who knows.
    1. Doccor18
      Doccor18 1 June 2021 09: 33
      +9
      Quote: Ramazan
      The strategy of a nimble C grade ...

      It is precisely from such "C grade" that large businessmen and politicians emerge ...
      1. Paul zewike
        Paul zewike 1 June 2021 09: 48
        +1
        Those. All those who make life worse :)
        1. Peak
          Peak 1 June 2021 10: 00
          -2
          the Chinese are rethinking the experience of using the Black Hawks in Operation Neptune's Spear in 2011. One of the helicopters lost its tail section. The Pakistani military covered the wreckage of the helicopter with a cloth and then secretly removed it from the scene. But it was too late: reporters were able to get photographs showing the previously hidden US stealth helicopter technology. Two weeks later, the United States still forced Pakistan to return the wreckage of the helicopter. But those days that the tail was at the disposal of the Pakistani military may well have been enough to familiarize the Chinese engineers with it.


          China unveils stealth helicopter concept based on American Black Hawk

          I don’t understand in any way that the Chinese found such a "stealth" in Black Hawk to design their own stealth helicopter on its basis ???

          A machine as a machine, with an EPR +/- characteristic equal to other analogues request ...
          1. Shurik70
            Shurik70 1 June 2021 11: 08
            -1
            I wonder how the principle of "invisibility" is realized?
            In stealth aircraft, the absorbing coating only partially renders invisible, since it effectively absorbs only one radio wave range. The main thing is the angles that reflect the radio beam to the side.
            You can't do that in a helicopter.
            1. Nikolay Ivanov_5
              Nikolay Ivanov_5 1 June 2021 20: 54
              -1
              The main thing is to say that he is invisible until others believe it.
    2. Dmitry V.
      Dmitry V. 1 June 2021 10: 31
      +5
      You might think that when the Chinese pilot flew in with an unexploded sidewinder in the fuselage, ours got into a pose and said - no, we won't copy, it's not human ...

      Sidewinder is a vivid example of how one person in the complex thought over and combined a wide range of original solutions. This is a very interesting rocket in engineering terms, which has a number of truly ingenious solutions found by one person. His last name is McClean and he served in the United States Navy. Taking an unguided rocket as a basis, he created a very integrated, extremely economical design.

      and further
      "Sidewinder" ended up in NII-2, in my department. We began to study it and for the first time encountered those original solutions that I described above. We quickly figured out how the homing head works, although only a piece remained of the mirror. But the photocell is well preserved. Khorol quickly reproduced the electronic-optical part, but for a long time we could not understand how the "top" mirror rotated. It was clear that we were faced with some kind of electric motor, but its specific design remained unclear. Professor M. I. Romanov from MEPhI, a specialist in electric drives, got down to business. He quickly figured out the riddle. A magnet was fixed on the mirror, and when the current passed through the stator winding, this magnet was drawn in by the arising magnetic field and the mirror began to rotate. At this time, the moving magnet itself made a switch - the current was supplied to the next winding - and so, rotating, the magnet switched the current to the next windings. The winding was located in the rocket body, forming the stator of the electric motor. Romanov looked at us and said:

      - Guys, this is a gramophone synchronous motor ...

      It turns out that sometime before the war, gramophones were created on this principle.

      And we could not understand anything because the Chinese managed to pick out the stator winding from the compound that had filled it. And when a bunch of wires were sent after us, we did not understand how they turned on. Okay, Romanov helped.

      How the steering gear works, they could not understand until they received the cover. At first, the Chinese simply did not give it to us, but we were sure that it was in it that the feedback potentiometer should be located, since it was not found anywhere else. We have already understood that the drive is powered by powder gases, but it cannot simply "slap" the rudders, but must deviate in proportion to the signals, but this requires feedback. We started sending requests to China: "Send the cover!" In the end, they found it, sent it, and - there was no potentiometer in it. But at this time in TsAGI in the wind tunnel the rudders were blown. But we are used to: when we receive data on the blowing of our rudders, the hinge moments in the angle of attack of the rocket and in the deflection of the rudder are always small, because they always try to balance it so that there is no load on the drive from the asymmetry of the air flow around it. Suddenly, we suddenly get some fantastic moment on the steering wheel deflection, which shows that when the deflection occurs, a very strong imbalance of loads occurs. At TsAGI, well-known specialists V.I.Shurygin and A.F. Mitkin were involved in blowing. I came to them and say:

      - You missed it. You have an error of orders of numbers.

      - This cannot be, - they laughed, - thank God, we have been blowing for almost a hundred years, the technique has been worked out. But, if you want, we will blow it again.

      The initial data was confirmed. And then it dawned on me that due to the shape of the steering wheel, there is a feedback - purely aerodynamic. This means that a potentiometer is not needed; at the same time, automatic adjustment of the transmission ratios for the speed head is obtained ...

      For such brilliant engineering solutions, in my opinion, the American McClean should have erected a monument during his lifetime. For they have radically influenced all rocketry in the world. All French developments of the Majik missile by the Matra company copied the Sidewinder line. All Israeli short-range air-to-air missiles followed the same line. All anti-tank missiles, which were built in the famous Instrument Design Bureau (KBP) in Tula by A.G. Shipunov, - portable missiles of S. P. Invincible "Strela", "Igla" - they were also built according to the ideology of "Sidewinder". Just like the American Stingers ... McClean created an entire era in rocketry.

      https://tech.wikireading.ru/6089
      So not only our K-13 borrowed other people's solutions - it would be foolish not to use it.
      But it turned out that we made the K-13 better: our photodetector had a higher sensitivity, a lower level of threshold noise, and therefore a more stable target lock. We not only copied Sidewinder, but also improved it in a number of ways. For us, this rocket became a good school that allowed us to understand the philosophy and technology of American technology.
  2. Intruder
    Intruder 1 June 2021 10: 58
    0
    appears to be channeled into the enlarged tail boom and out of the upper ventilation system to minimize infrared signature.
    Or maybe just a Chinese analogue, the NOTAR system !? What good is it to disappear in the exhaust of the gas turbine of the onboard gas turbine, which works in the stabilization and control system of this bird ...
  3. smaug78
    smaug78 1 June 2021 11: 04
    -4
    Polonshchina, Samsonovschina and further down the list ...