Russian attack drone S-70 will become invisible to the enemy

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Russian attack drone S-70 will become invisible to the enemy
Percussion prototype drone S-70 "Hunter", Photo: wikipedia.org

Drone aviation over the past decades it has been proving its significance and consistency. Recent conflicts, especially in Nagorno-Karabakh, prove that modern attack UAVs can have a serious impact on the course of hostilities on the ground. The main hope of the Russian strike aviation is rightly considered the heavy strike UAV S-70 "Okhotnik", the developer of which is the company "Sukhoi".

News about the new Russian strike-reconnaissance drone, which can operate in conjunction with the fifth-generation fighter Su-57, appear quite dosed. So, recently the TV channel "Zvezda" in its program confirmed the version that the attack drone will receive "stealth" nozzles for the engines.



It's worth noting that this is not really news. For a long time at exhibitions "Okhotnik" in the form of a model has been demonstrated with just such a design of the engine nozzle. In this regard, the layout really differs from the currently flying prototype of the technology demonstrator, which was previously the hero of the videos of the Russian Ministry of Defense.

Attack drone S-70 "Okhotnik" will receive a flat nozzle


A distinctive feature of the new Russian attack drone of the Sukhoi company should be a nozzle design that is new for domestic aviation. Unlike the usual round ones, it will become rectangular (flat). Until recently, this design feature was not used in Russian aviation.

Previously, such a move was implemented only on the world's first serial fifth-generation fighter - the American F-22 Raptor. Following him, the American supersonic heavy stealth strategic bomber Northrop B-2 Spirit received the same nozzles. This design makes it possible to increase the stealth of aircraft and their survivability.


A mock-up of the Okhotnik strike drone, Photo: Mikhail Zherdev

According to Sergei Kuzmin, who holds the position of Deputy General Designer of the Motor Design Bureau of UEC UMPO, the new version of the S-70 Okhotnik strike UAV will receive a flat nozzle, which will provide the drone with less visibility. According to Kuzmin, the new product will allow more efficient dissipation of the heat trace from the engine operation. Thanks to this, it will become much more difficult to hit the "Okhotnik" with the help of guided missiles with infrared and thermal homing heads.

According to Kuzmin, this innovation is unique for the domestic aircraft industry. The specialist noted that such a technical solution is not currently used on any domestic fighter. At the same time, Kuzmin emphasized that the introduction of such a nozzle shape has been a worldwide trend since the end of the XNUMXth century. This makes it possible to provide a set of necessary special characteristics in the rear hemisphere of the aircraft, first of all, invisibility.

According to the designer, the new flat nozzle, which was developed in Ufa, will be almost completely hidden in the design of the S-70 Okhotnik strike drone, which will reduce the visible flame from a running engine, effectively dissipating it. For additional camouflage from guided missiles, the developers, during constructive measures in the inner part of the nozzle, cover the hot parts of the engine with cold elements. Due to the cover of the nozzle in the airframe design, the radar signature of the aircraft is also reduced.

"The rocket will not see the hot blades of the engine", - summed up his performance in the program of the TV channel "Zvezda" Sergei Kuzmin.

The specialist also said that the nozzle for an impact drone is assembled using additive technology, in which parts and structural elements are produced on a 3D printer, after which they are assembled and tested at a stand where more than 200 different sensors are installed.

It should be noted that in Ufa, at the Motor enterprise, a rectangular (flat) nozzle was studied back in the early 1990s. It is known that one of the Su-27UB fighters was specially converted into a flying laboratory. The left engine (AL-31F) of the fighter was equipped with a flat nozzle developed by the Ufa enterprise. In this case, the nozzle had the ability to change the reverse and direction of the thrust vector.


A prototype of the S-70 "Okhotnik" drone in flight, video frame of the Ministry of Defense of the Russian Federation

As part of the experiments, about 20 flights were made, which were accompanied by good test results. Among other things, it was noted that the IR signature of a running engine with a new nozzle design was significantly reduced (several times). However, the lack of the necessary funding in the 1990s became the reason for the stoppage of this kind of work.

What are the advantages and disadvantages of a rectangular nozzle


The greatest interest of engineers and designers in rectangular nozzles arose in the early 1970s. At the same time, the interest was initially based solely on the military application of such technology. This sectional shape promised advantages only for combat aircraft. Most of all, researchers were attracted by two possibilities: a decrease in infrared and radar signature and a change in the direction of the thrust vector, which could increase the maneuverability of the aircraft.

Radar signature decreased due to the maximum possible matching of the contours of the engine nozzle with other elements of the aircraft structure. It is practically impossible to do this when using a nozzle with a regular (round) cross-section.

In addition, special radio-absorbing materials were subsequently used in the design of the nozzle elements, as was done on the fifth-generation F-22 fighter. Infrared visibility was reduced due to the correct formation of the ratio of the width to the height of the nozzle and the outgoing jet in order to reduce its temperature.


Fighter of the fifth generation F-22 Raptor, photo: wikimedia.org

The first combat aircraft to take off with new engine nozzles was the American experimental F-15 STOL / MTD fighter. This happened at the end of 1988. The development and generalization of the results of the tests obtained formed the basis for the creation of a flat nozzle for the Pratt & Whitney F119-PW-100 engines, which were installed on the F-22 Raptor fighter.

Besides the obvious advantages, the flat nozzle also has disadvantages. Structurally, the thrust vector on such a nozzle is controlled only in the vertical plane. And this lack of all-aspect ratio, which can be critical for combat fighters, which are focused on maneuverable combat. At the same time, this drawback plays practically no role for shock and reconnaissance UAVs.

Another drawback of this design, which some experts call the main one, is the mass of such a nozzle. In addition to tensile loads, flat nozzles also experience bending loads. Providing for them the required level of rigidity and strength inevitably entails an increase in the mass of the entire structure. It is known that on the experimental F-15 STOL / MTD fighter the increase in weight for each of the two engines was 180 kg.

The rectangular nozzle has an alternative


In any case, today we can say that a flat nozzle is not an uncontested solution for military aviation. The axisymmetric (circular) thrust vectoring nozzle is a serious competitor. In favor of greater maneuverability and to the detriment of radar visibility in the rear hemisphere, the domestic Su-57 and the Chinese fifth-generation fighter J-20 were chosen.


F-35 Israeli Air Force, photo: wikimedia.org

It is not known, however, which nozzles will be installed on the Su-57 fighters with the second stage engines, but now China and Russia are not alone in their choice. The Americans also opted for a traditional axisymmetric nozzle for their fifth-generation F-35 fighter-bomber.

It turns out that the developers of the F-35 preferred increased maneuverability and reduced weight to the detriment of the ideas of stealth technology. At the same time, an interesting feature of the F-35 engine nozzle is the serrated edges, which helps to reduce radar signature, but not as effectively as it would be with a rectangular nozzle.
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  1. +2
    19 October 2021 05: 39
    jagged edges to help reduce radar signature
    1. +6
      19 October 2021 07: 08
      The rowing wheel, which has no analogues in the world, reduces the acoustic signature for submarines)
      1. 0
        19 October 2021 08: 00
        In the photo for the article, who can see the thread of the rectangular nozzle of the "Hunter"?
        1. 0
          19 October 2021 20: 35
          Quote: Stroporez
          In the photo for the article, who can see the thread of the rectangular nozzle of the "Hunter"?

          =======
          Have you read CAREFULLY, or so - "diagonally"? It is also clearly written there that they PLAN to put a flat nozzle on the "Hunter" (it exists so far only on models: the second photo from above), but for now it flies with a round one (third photo).
        2. +3
          19 October 2021 21: 04
          You look at the photo of the layout (where it is paired with a red bucket), there the nozzle is flat. Everything else is just in the plans. And now "Hunter" is as invisible as possible, since it does not exist yet)
          1. -1
            20 October 2021 15: 54
            Quote: Stepan S
            You look at the photo of the layout (where it is paired with a red bucket), there the nozzle is flat. Everything else is just in the plans. And now "Hunter" is as invisible as possible, since it does not exist yet)

            Eh Mayo! Again fantasies with a red bucket and ISS. invisibility due to lack of presence wassat
      2. +5
        19 October 2021 09: 29
        Quote: Zufei
        The rowing wheel, which has no analogues in the world, reduces the acoustic signature for submarines)

        And the jet propulsion unit? And what about the "skat" mover?
        1. +6
          19 October 2021 14: 57
          an interesting feature of the F-35 engine nozzle is the serrated edges,
          That's what I meant ! hi
    2. +5
      19 October 2021 14: 14
      Yes, here in general the convolutions are straightened ... the air intake is angular, the air duct is S-shaped, the turbine is round, the nozzle is rectangular ... and something else is demanded from the plane ...
  2. +2
    19 October 2021 05: 44
    The usual question arises - when?
    1. +1
      19 October 2021 06: 03
      When? How much in what time frame? And then again it will be piece by piece in a year two, three, when potential "partners" dozens of them leave the assembly line.
      1. +1
        20 October 2021 19: 45
        Take and find news, this has been talked about more than once. As well as the fact that the development period is sharply reduced in order to get the devices into serial production earlier
    2. -5
      19 October 2021 06: 08
      Yes, someday they will. It's just that in a "market economy" it's hard to create what has already been created ...
    3. 0
      19 October 2021 06: 51
      As soon as possible!
    4. +3
      19 October 2021 07: 28
      Quote: Ingvar 72
      The usual question arises - when?

      When on the VO for the fifth or seventh time there will be an article about a flat nozzle for the S-70
      There have already been two (or three?) Articles, so count them.
      1. +1
        19 October 2021 07: 33
        Quote: Krasnoyarsk
        There have already been two (or three?) Articles, so count them.

        I would not count on articles on VO. There were more than a dozen of them in Armata, and where is Armata? laughing
        1. 0
          19 October 2021 07: 35
          Quote: Ingvar 72
          Quote: Krasnoyarsk
          There have already been two (or three?) Articles, so count them.

          I would not count on articles on VO. There were more than a dozen of them in Armata, and where is Armata? laughing

          You came in with your trump cards, I have nothing to beat. laughing hi
        2. +2
          19 October 2021 08: 01
          Quote: Ingvar 72
          I would not count on articles on VO. There were more than a dozen of them in Armata, and where is Armata?

          In the same place as the rectangular nozzle of the Hunter Yes
        3. -2
          19 October 2021 17: 09
          in serial production
          1. -2
            19 October 2021 21: 38
            Quote: Janerobot
            in serial production

            Don't sleep! And then all sorts of pictures ... fellow
            1. 0
              20 October 2021 08: 10
              you have reliable information that armata is not in mass production, only without your campaign slogans
              1. -3
                20 October 2021 08: 17
                In Russia, serial production of the T-14 "Armata" will begin in 2022. This was stated by the head of the Ministry of Industry and Trade Denis Manturov. “We are finishing state tests next year. Starting next year, it will already go actively into the series, "he said in an interview with TASS, published on Monday, July 5

                Do you trust the minister and the official media? wink
                1. +2
                  20 October 2021 10: 36
                  "An experimental batch of the latest T-14 Armata tanks has been delivered to the troops," said Vladimir Artyakov, First Deputy Director General of the Rostec State Corporation.
                  how can a batch of tanks be delivered without mass production?
                  1. -2
                    20 October 2021 15: 07
                    Quote: Janerobot
                    how can a batch of tanks be delivered without mass production?

                    Of course, you missed the word "Experienced". Sberbank robots are quicker in thought processes than non-robots in VO. wassat
                    1. +1
                      20 October 2021 18: 11
                      what difference is it experienced or what is it, we say if you have forgotten about batch production, and a batch of tanks is batch production
                      if you do not understand something, first clarify, and then practice wit
                      1. -2
                        20 October 2021 18: 26
                        Have you just accused Manturov of stupidity? belay
                      2. 0
                        20 October 2021 18: 30
                        what are you speaking about?
                        moreover, this manturov is here, I did not write about him, and if you simply have nothing to answer, then just do not write
                      3. -1
                        20 October 2021 19: 12
                        Quote: Janerobot
                        what are you speaking about?

                        Once again, a top-level official, Minister of Industry Manturov, told the official media that Armata will go into production in the 22nd year.
                        You say that a series is an experimental game, and it turns out that Manturov "slightly" does not know what a series is. Accordingly, he .... how to put it mildly? Under-educated or what? request Note - these are your conclusions. wink
                        This is the logic of my friend, nothing personal. bully I hope the curator will not come to you, and the awards will not be deprived. laughing
                      4. 0
                        20 October 2021 21: 04
                        Okay then the question is: if there is a batch of 20 tanks, then how were they produced and what is it?
                        well, there he talked about serial deliveries.
        4. +1
          20 October 2021 08: 15
          I would not count on articles on VO. There were more than a dozen of them in Armata, and where is Armata?

          All enemies have already been intimidated and confused laughing
          1. 0
            20 October 2021 10: 37
            these are the expectations of industrialists, tests always make adjustments
    5. +2
      19 October 2021 13: 14
      Not a gopher! Have you seen the "Hunter"? Of course! And he is not!
  3. 0
    19 October 2021 06: 03
    If we take one of the existing engines as a basis and modify the nozzle, then this option is through passage. If they start working from scratch, then, by analogy with the "product 30", it will take decades.
  4. 0
    19 October 2021 06: 26
    How can you see "hot engine blades" in principle? On the ground?
    1. +1
      19 October 2021 06: 51
      How can you see "hot engine blades" in principle?
      For example, on an air-to-air missile with a seeker.
      1. 0
        19 October 2021 06: 59
        I think the jet of gases is hotter than the blades.
        1. +3
          19 October 2021 11: 07
          Quote: Andrey Moskvin
          I think the jet of gases is hotter than the blades.

          You are wrong.
          The temperature of the blades is noticeably higher than the temperature of the exhaust gases behind the combustion chamber.

          And in the frontal projection - the blades and leading edges of the wing are visible much stronger than the jet of gases ...

          There is a very high probability that the F-35 and F22 radars can determine the type of aircraft flying towards the aircraft by the engines used, or rather the number of turbine blades, and they have different numbers in different engines.
  5. +5
    19 October 2021 06: 49
    adaptive technology, in which parts and structural elements are produced on a 3D printer,
    that the author was sealed up or really confused additive technologies with some other laughing
    1. +7
      19 October 2021 07: 03
      Quote: A.K.
      that the author was sealed up or really confused additive technologies with some other

      A typo is when there are zhi-shi through y. At the same time, it would be nice to explain what a "reverse change" is. In my opinion, the reverse is either there or not. But about its change .... it is not clear. Here either the author's flaws, or an illiterate editing. A sort of conceptual wandering. laughing
  6. +7
    19 October 2021 06: 50
    Following him, the American supersonic heavy stealth strategic bomber Northrop B-2 Spirit
    Chiiiiivoooo? !! If this aircraft exceeds the speed of sound, then only the speed of sound in a vacuum.
  7. -2
    19 October 2021 07: 39
    Why American technology is invisible? These are Soviet technologies !!! Or did the Americans share their technologies with the Russian Federation?
  8. +3
    19 October 2021 08: 51
    "Hunter" has been and remains a platform for developing technologies,
    therefore, it is absurd to wait for its appearance in the form of a "serial" machine.
    In general, the same Su-57, only unmanned.
    1. +7
      19 October 2021 09: 22
      Technology development machines are also needed. Like the Su-47 for example. In the USA and the USSR, hundreds of aircraft were created only for testing hypotheses and testing technologies.
      About the series it is to our propagandists, this particular UAV is useless. Trying to catch up with yesterday. In fact, this is an unmanned F-117 only to the side.
      F-117 / S-70
      Length: 20 / 14 m.
      Wingspan: 13/19 m.
      Takeoff weight (maximum?): 24/25 t.

      Accordingly, his tasks are the same as those of the F-117 or RQ-170, and the price will also be comparable. Attempts to endow him with great opportunities for propaganda nonsense.
      We get a highly specialized aircraft at the exit, with a price tag like a full-fledged fighter, with many technical questions. This is definitely not necessary for our aircraft.
  9. +2
    19 October 2021 08: 57
    "It turns out that the developers of the F-35 preferred increased maneuverability and reduced weight to the detriment of the ideas of stealth technology."
    The author confuses warm with soft. The f35 axial nozzle is needed primarily for vertical takeoff, which is why it was installed, and not because you need to increase maneuverability. Here at su35 it is only for maneuverability. For the su 57, it is not a problem to do this (what is +200 kg), but the designer decided to use all maneuverability to the detriment of stealth, although it would probably be possible to cover the engines from below with some kind of thermoplastic so that they would not shine like that.
    1. 0
      20 October 2021 19: 49
      Only one of the three modifications has vertical takeoff, which is not numerous at all. Another thing is that the conventional F-35 has no nozzle deflection in any case, so the author was still mistaken.
    2. 0
      15 December 2021 21: 02
      the developers of the F-35, in addition to the combat capabilities of the aircraft, had metrics for optimizing its price. this is not an F-22, where we will not stand for the price)
  10. +12
    19 October 2021 10: 09
    The specialist also said that the nozzle for the attack drone is assembled using adaptive technology.

    Adaptive technologies are technologies for people with disabilities.
    Obviously, some of the nozzle elements are manufactured using additive technology.
    In this case, the nozzle had the ability to change the reverse and direction of the thrust vector.

    The nozzle provided the possibility of reversing and changing the thrust vector.
    A self-respecting resource should not release such illiterate material.
  11. +8
    19 October 2021 11: 25
    When the first photo of the S-70 appeared and its interpretation as a super-duper inconspicuous aircraft, everyone who is at least somehow interested in modern flight topics immediately asked the question: "What inconspicuousness can we talk about with such a nozzle?"

    How much then from the cap-throwers and urya-urya - there was mud poured onto the perplexed: "What are you smarter than designers? Everyone knows the designer better than you! Nobody needs these flat nozzles of yours" "....

    Time passed - and it once again put everything in its place ...
    1. -2
      19 October 2021 17: 07
      that is, you think that the F-35 is not an inconspicuous aircraft with such a nozzle
      1. 0
        20 October 2021 08: 16
        and for what are the disadvantages, that is, if the round nozzle is Russian-made, then it is not inconspicuous, but if it is American, then this is real stealth
        1. 0
          20 October 2021 11: 52
          Quote: Janerobot
          and for what are the disadvantages, that is, if the round nozzle is Russian-made, then it is not inconspicuous, but if it is American, then this is real stealth


          The thing is different.
          Look at all modern UAVs with a similar aerodynamic design - they all have a hidden and flattened nozzle.
          And comparing the F-35 with a UAV is the stupidest rigging.
          It is necessary to compare with those in whose field he will play.
          1. 0
            20 October 2021 14: 09
            f-35 and uav obey the same physical laws - and here's a rigging
            if there and there is a round nozzle, why is there stealth and here not stealth
          2. -2
            20 October 2021 19: 53
            In this case, you are just doing the manipulation, trying to justify yourself with different classes of devices, but, as you were rightly told, working under the same laws of physics. Yes, and there were no yells: the majority here immediately realized that this was a temporary solution. Quite quickly, and a flat nozzle model was announced.
            1. +1
              20 October 2021 20: 56
              Quote: El Chuvachino
              In this case, you are just doing the manipulation, trying to justify yourself with different classes of devices, but, as you were rightly told, working under the same laws of physics. Yes, and there were no yells: the majority here immediately realized that this was a temporary solution. Quite quickly, and a flat nozzle model was announced.


              Those. Are you talking out loud that you absolutely do not see the difference in the tasks, methods of using aircraft created according to the "flying wing" scheme and stupidly compare them with fighter-bombers of front-line aviation?
              Did I understand you correctly?

              For you, a set of measures for tasks, methods of using such devices as: B-2, B-21, N-20, Sentinel, Neuron, Stingray, Tarantis, Corax, Hunter and others, as well as the newest US intelligence officer RQ-180 (which BigWhiteBet ", about which articles on the Internet with a gulkin's nose ... And already in the Russian-speaking segment - about zero ...) - have the same concept of application as the F-35?
              Subsonic devices, with a huge time spent in the air (up to 24-32 hours), low-maneuverability, not having developed defensive weapons, serving for "long-term operations in the disputed sky zone" - do you consider it identical to a high-speed, maneuverable multifunctional fighter?
              1. -2
                20 October 2021 22: 22
                Quote: SovAr238A
                Those. Are you talking out loud that you absolutely do not see the difference in the tasks, methods of using aircraft created according to the "flying wing" scheme and stupidly compare them with fighter-bombers of front-line aviation?

                Poke your finger where exactly I said this.
                1. +2
                  20 October 2021 22: 34
                  Quote: El Chuvachino
                  Poke your finger where exactly I said this.

                  Quote from your post ...

                  In this case, you are just doing the manipulation, trying to justify yourself with different classes of devices, but, as you were rightly told, working under the same laws of physics.
                  1. -2
                    20 October 2021 23: 18
                    AND? Do you think white is black, A is B?
                    1. +2
                      20 October 2021 23: 25
                      Quote: El Chuvachino
                      AND? Do you think white is black, A is B?


                      T .. are you talking about the fact that the essence of a maneuverable front-line fighter for you is equal and identical to the essence of "an aircraft for long-term operations in the disputed sky zone"?

                      You, personally, do not see the difference between F-35 and Hunter or Neuron?
                      just don't merge.
                      Tell me what is the difference - this is very important for all readers ...

                      You start to play around, merge - everything will become clear.
                      Start sprinkling with arguments - honor and praise to you ...

                      But reading you for a long time - I plague you that you will not see a word or praise.
                      For a dummy.
                      1. -1
                        20 October 2021 23: 30
                        Arguments what do you want?

                        Your problem is that you think out your own conjectures for others, and then ascribe, in this case to me. I never saw the ghosts of my quotes, where I say that I do not see the difference between the F-35, the Hunter, and so on.

                        If you write outright nonsense, try to hide your pseudointelligence with pseudo-analytics, for, supposedly, in clever words, try to do it at least without this ultimatum kindergarten.
                      2. +2
                        20 October 2021 23: 36
                        Quote: El Chuvachino
                        Arguments what do you want?

                        Your problem is that you think out your own conjectures for others, and then ascribe, in this case to me. I never saw the ghosts of my quotes, where I say that I do not see the difference between the F-35, the Hunter, and so on.

                        If you write outright nonsense, try to hide your pseudointelligence with pseudo-analytics, for, supposedly, in clever words, try to do it at least without this ultimatum kindergarten.

                        I did not see any real words from you what is the difference between an inconspicuous front-line fighter from an inconspicuous bomber and an unobtrusive RTR / EW aircraft ...

                        Take the trouble at least once in your life to really voice the differences in application, tasks, etc.
                        Until now I see a simple empty ...
                        Simple blah blah blah.
                        You are on a technical forum, and they are waiting for you to prove your words ...
                        What is the difference between the F-35 and the Hunter.
                        And we will see your level of knowledge
                      3. -1
                        20 October 2021 23: 42
                        Quote: SovAr238A
                        Work hard at least once in your life

                        Take the trouble to stop lying first and apologize.
                        Quote: SovAr238A
                        You are on a technical forum, and they are waiting for you to prove your words ...

                        I repeat the question, what exactly arguments, what exactly You need?

                        Are you having memory problems? Remind you how the conversation started? That's right, from the engine nozzle, which can be inconspicuous both on a fighter-bomber and on a long-playing UAV. But one of your convolutions suddenly decided to indicate what should be compared with what and how, and what should not, and on the basis of foreign analogs. Are you taking on too much? Maybe you are still some ... nothing to make such statements here?
                      4. +2
                        21 October 2021 01: 10
                        Quote: El Chuvachino
                        Quote: SovAr238A
                        Work hard at least once in your life

                        Take the trouble to stop lying first and apologize.
                        Quote: SovAr238A
                        You are on a technical forum, and they are waiting for you to prove your words ...

                        I repeat the question, what exactly arguments, what exactly You need?

                        Are you having memory problems? Remind you how the conversation started? That's right, from the engine nozzle, which can be inconspicuous both on a fighter-bomber and on a long-playing UAV. But one of your convolutions suddenly decided to indicate what should be compared with what and how, and what should not, and on the basis of foreign analogs. Are you taking on too much? Maybe you are still some ... nothing to make such statements here?


                        Oh ... from the inveterate team of "uryakalok" appeared "literate words"?
                        They even returned to the nozzles ...
                        That is, when asked about anything, it all comes down to blurring? to the deshman troll?
                        Funny.
                        But. I understand what you are trying - and gouging. you on this very empty trolling.
                        You are not Fat, you are a worthless troll ...

                        Commendable ...
                        So that's it. Uryakalka reckless and baseless - there will be no apologies. For you have not said anything that I must apologize for.
                        I remember your shrieking, but I don’t remember anything else.
                        Remind me with links to your theses, in which I am wrong, it is yours - and if your theses are relevant - I will apologize publicly ...
                        But 100% - you will not provide them ... For blah blah blah ...

                        Secondly.
                        Reading you, I understand the command - is that so?
                        It's just very strange to see sometimes a complete stupidity, sometimes an interesting question ...
                        So that's for your team.
                        I wrote several times that on the devices:
                        having a "flying wing" scheme, respectively having a subsonic speed, not having the ability to maneuver, having the task of working in "disputed areas" - the whole main task is reduced to maximum stealth to the detriment of flight characteristics. I have already given a list of aircraft. Add loyal wingman to them.
                        Do you have any authoritative comments on their flying scheme?
                        Why do they all have slotted nozzles?
                        Just think about it?

                        Do you know where the Su-27 family came from?
                        and it came from the North American FX project stolen by our intelligence services from the 335 project ...
                        Suddenly yes?




                        Well, if you look at all the diagrams of airborne vehicles before and after - then yes, the appearance of aircraft such as Su-27 and MiG-29, suddenly. With a complete overhaul, entirely to the whole concept of our mechanical engineering, our production system. which has never happened before on such a scale. and somehow strange it turned out that it was clearly and specifically sharpened for a certain technological level.
                        Which then, neither our minsredmash nor the aviation industry knew how to work ...
                        I had to break the whole Soviet system of work.
                        For the Su-27 and MiG-29 are vehicles that required a complete restructuring of the Soviet economy.
                        Suddenly? Yeah.
                        Check out all the previous models of our aviation.
                        They jumped over a couple of generations one-time.
                        from Su-17 to Su-27 - this does not happen in conventional technology.
                        This is a supercardinal transition. which was in the early 80s.
                        Nobody thinks about it.
                        it was very difficult then.
                        And this is how we understand it very difficult and now ..

                        I am not writing for you - I am writing for those tens of thousands of people - who will come to this article and read it like her. as well as reviews for it.
                        And my review will be relevant, and yours will be empty shit.
                        For, just as I did not ask for relevance from you, so I did not receive it.
                        The dummy is that. and windbag ... Uryakalka, without any arguments ...
  12. +4
    19 October 2021 11: 55
    Russian modern weapons are distinguished by one remarkable feature - they can be developed and improved for eternity.
  13. +5
    19 October 2021 11: 56
    The first combat aircraft to take off with new engine nozzles was the American experimental F-15 STOL / MTD fighter. This happened at the end of 1988. The development and generalization of the results of the tests obtained formed the basis for the creation of a flat nozzle for the Pratt & Whitney F119-PW-100 engines, which were installed on the F-22 Raptor fighter.

    F 117 Nighthawk nervously smokes on the sidelines ...

    If cho, the first flight is 1981 ...
  14. 0
    19 October 2021 12: 38
    Russian attack drone S-70 will become invisible to the enemy

    The flat nozzle will reduce the UAV's IR signature, but it will not become invisible. Moreover, on the mock-up of the UAV it is clearly visible with this nozzle. What kind of invisibility are we talking about?
    1. 0
      15 December 2021 21: 08
      I may be wrong, but from the point of view of the layman, the flat nozzle allows for stealth when returning from a mission. roughly speaking, if you fly at a certain angle, the nozzle will be covered.
      maybe I'm far from a real answer. obviously this is not included in the priority combat qualities, but it increases the survivability of the apparatus. for manned aircraft this is important, for unmanned aircraft it is probably less important.
  15. 0
    19 October 2021 16: 26
    The size of this "hunter" is puzzling. He's so hefty that, in my opinion, you can put the pilot there.
    And about stealth, it is not clear why such torment. "old meter radar on lamps"
    1. +1
      19 October 2021 23: 27
      Quote: clidon
      The size of this "hunter" is puzzling. He's so hefty that, in my opinion, you can put the pilot there.

      The size of the hunter is equal to F-117 or Su-57. Above the alignment resulted.
  16. 0
    20 October 2021 00: 50
    ... with infrared and thermal homing heads it will become much more difficult.

    Uhhh, education
  17. -1
    20 October 2021 01: 50
    "Russian attack drone S-70 will become invisible to the enemy."

    After reading the title, I thought that in the most cunning and proven way: it will not go into the series ..
  18. 0
    20 October 2021 16: 00
    Here, as an example, not F22 should be given, but nozzles F17 and B2 .......

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