Military Review

A bad omen for NATO. The hidden side of the infrared stealth "Hunter-B"

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The subject of an extremely contradictory spectrum of expert opinions was a video demonstration published by the Russian Defense Ministry on the first flight of a prototype of the promising Russian strike UAV C-70 Okhotnik-B, which took off from the runway of the aerodrome of the V.P. Novosibirsk Aviation Plant. Chkalov 3 August 2019 year.




On the one hand, the successful 20-minute test flight of an advanced strike drone, which demonstrated the stable operation of a computerized electrical remote control system and the relatively high flight performance of a flying wing aerodynamic design, marked a new milestone in the development of the Russian unmanned aviation. An “iron” parity was established between the lead developer of S-70, the Sukhoi Company aviation holding company, and the leading Western aircraft building giants Dassault Aviation and Northrop Grumman Corporation, who designed the nEUROn and X-47B drone UAVs. On the other hand, in the design of the glider of the first flight model of the Okhotnik-B UAV, two critical technological shortcomings were noted - the “half-open” architecture of the location of the AL-31F / 41F family of turbofan engines and a standard round nozzle that increased the infrared signature of the drone tens of times in comparison with foreign analogues.

In a series with a new nozzle and modern engine nacelle architecture. The magical transformation of "Hunter-B"


Evil tongues managed to call this configuration of the engine location an “incurable chronic disease” of “Okhotnik-B”, which consists in exposing the most heat-contrasting elements of the UAV power plant in front of the “far-sighted” and highly sensitive optical-electronic sighting systems for viewing the front hemisphere OSF, “Pirate”, “SkyWard -G "and DAS installed on the multi-role fighters" Rafale "," Typhoon ", JAS-39E" Gripen-NG ", as well as F-35A / B / C and operating in the medium-wave (3 - 5 microns) and long-wave (8 - 12 μm) infrared wavelength ranges .

Nevertheless, literally three weeks after the first flight of the "Hunter-B", a bullet point was put on alarmist food for thought. On the eve of the official opening of the International Aviation and Space Salon MAKS-2019 news Runet's publications were full of photographs of the prototype of the serial S-70 with radical structural processing of the tail of the airframe. In particular, the “Okhotniki-B” serial modifications should receive integrated nacelles of the “closed architecture” deep into the fuselage and advanced flat “wedge-shaped” nozzles of the “upper opening” with heat-resistant upper edges shifted forward. What are the advantages of this constructive solution from the specialists of the Sukhoi company?

Recessed deep into the fuselage of the “closed architecture” engine nacelle will minimize heat transfer from the “hot zone” of the AL-31F / 41F engine in general and the combustion chamber in particular to the surface of the Okhotnik-B airframe. Moreover, in the space between the red-hot nodes of the “hot zone” of the engine and the inner surface of the engine nacelle, a specialized multilayer heat-resistant nano-screen can be installed, the interlayer spaces of which will be blown with cold atmospheric air, pumped by a significant number of miniature air-ducting capillaries paired with additional compact air intakes located in leading edges of the wing (outside the mechanization units), or on the generatrix of the main air intake ika.

Currently, the most effective shielding of the “hot zones” of the turbojet twin-circuit afterburning engines of the F135-PW-100 / 600 / 400 and M88-2 series boasts the American 5 multi-generation fighter F-35A / B / C “Lightning II” multipurpose fighters of transitional generation "Rafale". This is evidenced by infrared images of fighter data previously published on Western military analytical sites, obtained by the FLIR System company during several international aerospace salons. In these photos, the engine nacelles warm up and are not observed at all even in afterburner operating modes, which cannot be said about our MiG-29, Sushki and even the F-22A Raptor.

As for the uniqueness of the design of a flat nozzle for serial modification of the C-70 Okhotnik-B, we are not only talking about the displacement of the nozzle channel relative to the axis of the low-pressure turbine and the rear engine mount (it allows to reduce the infrared visibility of the UAV in case of observation by aircraft infrared stations such as OSF and "Pirate"), but also about shifting the top edge of the nozzle forward. This solution allows you to "hide" the infrared radiation of the red-hot upper edge behind the "wedge-shaped" tail section of the "Hunter" airframe at maximum engine operating modes. Consequently, it will be practically impossible to detect this “hot” structural element using ground-based infrared sights provided by modern mobile air defense systems of Western manufacture, while it will be possible to detect a partially cooled jet stream only at a distance of 30 - 40 km into the rear hemisphere and 15 - 25 km - to the front hemisphere. From these distances, Okhotnik-B will be able to work out the enemy’s objects with the widest range of high-precision weapons.

Of course, avoiding the use of an afterburner “Hunter-B” afterburner in a power plant will exclude the possibility of operating at the desired speeds in 1,2 - 1,4М. Nevertheless, the likely integration of the more “high-torque” Product 117 engine (of the order of 15000 kgf) will provide the C-70 with a quite acceptable range of high subsonic flight speeds from 970 to 1050 km / h. At the same time, the estimated range of our stealth drone will be 500 km higher than the unmanned brainchild “Dassault” and “Northrop”.
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  1. NEXUS
    NEXUS 30 August 2019 10: 35
    +14
    At the same time, the estimated range of our stealth drone will be 500 km higher than the unmanned brainchild “Dassault” and “Northrop”

    The hunter will be such a prototype and 5 for years to come. Nobody knows what it will be both externally and internally in the production version. And all these fortune-telling on coffee grounds are fed up with the order.
    1. Mestny
      Mestny 30 August 2019 10: 40
      +9
      This mantra "nothing will be" the main thing to repeat without stopping. Then the hated mode will immediately collapse.
    2. The comment was deleted.
      1. NEXUS
        NEXUS 30 August 2019 11: 58
        -1
        Quote: rudolff
        That’s for sure, Andrey. You can recall how glamorous Armata was in the form of models and how clumsy turned out to be in reality. Until the serial Hunter, another years ...

        Hi there. hi
        Armata will also be brought in for years too ... as well as its appearance will change. It is important that it is not buried in the archives.
        As for the Hunter, then ... I think some of its modifications will be very different from this prototype.
        1. Ehanatone
          Ehanatone 30 August 2019 12: 39
          -24
          "Armata will still be brought to life for years ... as well as its appearance will change. It is important that it is not buried in the archives."
          It would be better to have been buried:
          A raw, publicized product, a product of the ambitions of the new UVZ director, made on the knee, who buried the product of the Improvement 88 program, which was in the final stage of creating test samples ...
          And now it will be a dopilivat and dopilivat, if ever a dopilit, and this is still not recalling the foreign electrics, which there before .... a lot there ...
          1. Eduard Egorov
            Eduard Egorov 30 August 2019 15: 02
            +10
            What foreign electronics on Armata costs? or is it just your guesses, or guesses just like you.
            1. plotnikov561956
              plotnikov561956 31 August 2019 06: 25
              -9
              Regarding electronics ... the answer lies in your pocket ... All you need to do is go to the store and buy a Russian computer
              1. Sevastiec
                Sevastiec 31 August 2019 15: 48
                +4
                There is an objective difference between what you can buy in a store and what is installed on military equipment.
                I’ll explain if you don’t know this: in order to bring competitive microelectronics to the market, you need to build an entire industry, invest billions, spend years ... and finally see that the market has gone far ahead. Catch up with other countries in this production, this is an over program that is unlikely to pay off.
                But this does not mean that the country does not have technologies and its elemental base. For military production, it is CRITICAL important to have one and therefore has its own small-scale production. Moreover, there, as a rule, it is not required to have the most powerful processor, as in a gaming computer. And to capture the consumer market, I repeat, these are gigantic unjustified costs.
    3. morgan_67
      morgan_67 1 September 2019 09: 26
      0
      5 years? Based on the experience of 15 - 20 years, this can still be believed. But in general "America is in a panic", "everyone in Europe is trembling."
  2. Nikolaevich I
    Nikolaevich I 30 August 2019 10: 47
    +8
    How nice to "hear"! Straight a shot of Old Mariinsk balm in a cup of coffee! Evgeny seemed to have been replaced, as the one who annoyed the "cop" (that is, the local commander ...), a parrot from a pet store! Keep it up! We believe in Damantsev! fellow Puck! Puck!
    1. Paranoid50
      Paranoid50 30 August 2019 23: 43
      +1
      Quote: Nikolaevich I
      We believe in Damantsev!

      And just something "threw the phase." laughing
  3. Operator
    Operator 30 August 2019 10: 54
    +1
    Article plus, definitely

    It clearly needs to be moved to the "Armaments" section to replace any pseudo-analytics like "New Commander of the US Navy. From Vice Admiral to Commander."
  4. Ka-52
    Ka-52 30 August 2019 10: 57
    +10
    Recessed deep into the fuselage of the nacelle of "closed architecture"

    Eugene should get rid of his habit of inserting words like "closed architecture", "gallium nitride", etc. into place and out of place.
    At the moment, the most effective shielding of the "hot zones" of turbojet dual-circuit afterburners

    shielding, in principle, can do little, because if the problem of heat removal from the screens is not solved, then sooner or later they will glow no worse than what they cover.
    This is evidenced by infrared images of fighter data previously published on Western military analytical sites, obtained by the FLIR System company during several international aerospace salons

    The objectivity of these photos is a separate issue. Rather, the correctness of comparison. Because there are different flight parameters of the aircraft on them and different camera angles and different shooting conditions.
    not only about the displacement of the nozzle channel relative to the axis of the low pressure turbine

    A flat nozzle already provokes shock waves in its supersonic part, and displacement will only intensify this effect
    1. MBRSS
      MBRSS 30 August 2019 17: 13
      +1
      what does it mean provokes? Compaction surges are an essential attribute of a supersonic jet in general.
  5. gridasov
    gridasov 30 August 2019 10: 57
    -14
    Clear sabotage of the tasks of designers in front of the army is obvious. In fact, the drone should be counted on a one-time use, which means it must be very cheap. That means you need to place an effective mover on the frame from the building corner providing both maneuverability and flight duration and carrying capacity. All! Complex configurations, control mechanisms for the car 20 minutes of use, but why.
    1. Ka-52
      Ka-52 30 August 2019 11: 05
      +7
      Clear sabotage of the tasks of designers in front of the army is obvious. In fact, the drone should be counted on a one-time use, which means it must be very cheap. That means you need to place an effective mover on the frame from the building corner providing both maneuverability and flight duration and carrying capacity. All! Complex configurations, control mechanisms for the car 20 minutes of use, but why.

      Wow, Gribasov began to express himself in human language, without these bogeyman
      A fundamentally new knowledge system is needed. It is necessary to comprehend the flight of the aircraft on the factors of changes in the electromagnetic fluxes, which at low speeds determine the hydro-gas-dynamic processes, and on the higher ones, namely the electromagnetic ones.

      laughing
      I don’t even know if it’s good or alarming what lol
      1. Fedor egoist
        Fedor egoist 30 August 2019 11: 30
        +6
        Quote: Ka-52
        Wow, Gribasov began to express himself in human language, without these bogeyman

        Self-learning neural network "gridasov" has reached a new level:
        Quote: gridasov
        So on the frame from a building corner it is necessary to place an effective propulsion device providing both maneuverability and flight duration and carrying capacity. All!

        To the level of thin trolling laughing laughing laughing
    2. Sahalinets
      Sahalinets 30 August 2019 11: 48
      +1
      Well, for one-time use, only a drone like the Black Hornet or Lancet is appropriate, anything more complicated will be prohibitively expensive.
    3. Private-K
      Private-K 1 September 2019 11: 15
      +2
      Cheap disposable long-range shock drones are called rockets.
      1. gridasov
        gridasov 1 September 2019 12: 40
        -2
        A missile is not capable of maneuvering at short distances, hovering or maneuvering vertically. Or it still needs to be explained?
        1. Private-K
          Private-K 1 September 2019 13: 06
          +1
          Are long-range drones capable of hovering? No. Rockets, like drones, are capable of "patrolling" waiting for a command or self-detection of a target.
          And just as missiles are capable of maneuvering, so no drones will be able to be capable for a long time - all available long-range drones "maneuver" at the level of a flying iron.
          Those. all that you wrote is nonsense.
    4. The comment was deleted.
  6. Prutkov
    Prutkov 30 August 2019 15: 28
    +1
    I would suggest not so much trying to make the plane invisible, but to make it so that UAVs in the infrared spectrum and on the radar can give the same marks as other aircraft (F-16, Mirage, Gripen). Those. it would be a kind of UAV - a chameleon.
    1. gridasov
      gridasov 30 August 2019 16: 57
      0
      This is by the way a very healthy thought. But then you need to transform the algorithms leading to stealth on the contrary to transform it into other tasks.
  7. JD1979
    JD1979 30 August 2019 18: 46
    +1
    Well, that's the answer to the dispute about the action of the hunter and the Su-57 in the "same ranks" - the hunter will not be able to keep the cruising Su-57.
  8. SovAr238A
    SovAr238A 30 August 2019 23: 02
    0
    ...
    What have I read now?

    It's just that the whole school of aircraft engineering, all of our Aerospace Universities, are simply reset to zero ..
    It turns out you can just
    integrate into the fuselage of the nacelle


    The principles of weight distribution. balance. the position of the centers of gravity. strength characteristics, inertia, calculation of overloads - all that. what dozens of years learn and how do the basics of aircraft construction begin - everything is simply crossed out by models and magazines.
    1. gridasov
      gridasov 1 September 2019 12: 32
      0
      But it doesn’t seem to you that a lot of problems have been created artificially, which are then heroically overcome and solved by progressive scientific thought. At the same time, simple schemes for increasing the energy of the propulsion unit combined with the engine eliminates this mass of problems. Fifteen minuses speaks for itself that people do not think with expanded perception, but affirm or even do not understand why they put minuses. Indeed, in fact, no one has ever seen the propulsion scheme of which I speak. Moreover, this is already a minus in advance. Because mass is an impersonal unit in both physics and the human being.
      1. Vlad.by
        Vlad.by 4 September 2019 09: 37
        0
        So we are not only schemes, we have not seen the essence of that super-duper mover.
        Some blah blah blah.
  9. Sergeantpro
    Sergeantpro 30 August 2019 23: 12
    +1
    Quote: Sahalinets
    Well, for one-time use, only a drone like the Black Hornet or Lancet is appropriate, anything more complicated will be prohibitively expensive.

    In the full sense, not even the first Soviet ones were disposable. And so, now even disposable barmalei are sculpted from polystyrene and adhesive tape.
  10. Sars
    Sars 31 August 2019 04: 27
    0
    It is necessary to begin manufacturing as it is. Until he is perfected, the Hunter can perform certain tasks.
    Bomb the Turks, nightmare the Americans in the Black Sea, etc.
    1. gridasov
      gridasov 1 September 2019 12: 35
      0
      Like the fact that no one thinks how to deal with UAVs. Yes, with these speeds and maneuverability, as well as low payload, these aircraft become a target
  11. V1er
    V1er 31 August 2019 05: 52
    +1
    And for some reason, no one posted a photo of the changed appearance. Here.
  12. Sergeantpro
    Sergeantpro 31 August 2019 13: 09
    0
    Quote: V1er
    And for some reason, no one posted a photo of the changed appearance. Here.

    It's simple: Now they will tell you that it is made of cardboard, the hatches are thin and it will never take off, because everyone stole yesterday.
    1. gridasov
      gridasov 1 September 2019 12: 37
      +1
      Yes, any physicist will say that an acute angle will glow and burn out. And on radars or in the corresponding range of electronic magnetic disturbances, more than the hot outgoing gases will be visible
  13. gridasov
    gridasov 1 September 2019 13: 55
    +1
    I am paying full attention to the fact that everyone is hooked on the term -disposability. No one is against reusability, but in terms of simplicity and cost and functionality of performing tasks, it is necessary to lay more complex parameters of situations. After all, combat conditions do not always develop in our favor and the enemy should not be underestimated
  14. Captain45
    Captain45 1 September 2019 22: 39
    +1
    video demonstration of the first flight of a prototype of the promising Russian strike UAV S-70 “Okhotnik-B”, which took off from the runway of the aerodrome of the Novosibirsk Aviation Plant named after V.P. Chkalova 3 August 2019 year.

    And in the photo to the article of snow knee-deep. Although in Novosibirsk, everything can be, including snow in August.
  15. Alex Fox
    Alex Fox 2 September 2019 10: 34
    0
    Quote: plotnikov561956
    Regarding electronics ... the answer lies in your pocket ... All you need to do is go to the store and buy a Russian computer

    So what prevents you from going and buying? Or give the store address? http://www.ineum.ru/computers come buy
    1. lukewarm
      lukewarm 6 September 2019 09: 43
      0
      I went in. http://www.ineum.ru/vk-elbrus-401pc
      Personnel on Linux for 203 rubles ... "However ..." © I'm a patriot, but not so much ....