Military Review

40 years to the legendary combat helicopter Mi-24 (part 2) Modifications A, B and D

33
Modifications A, B and D


The first modification of a combat helicopter, the Mi-24A (245 product), launched into serial production in 1971 -MV "with RCSN. The operator guided the 4П4М / К-12.7В guides, mounted on the 1П9М / К-146В guides, through the 9ШШ17 optical sight with wide and narrow fields of view and, accordingly, with two image gains. The Phalanga-MV complex had low efficiency. The minimum launch range was equal to 2 km, the maximum -32 km. The probability of hitting a rocket in a tank did not exceed 4%.

Mi-24A in the museum of 344-th pulp and paper industry, Torzhok


Machine gun A-XNUMHA designs N.M. Afanasyev was put into service in September 12.7 and modernized in 1953. His rate of fire was limited to 1966 rds / min; received from the state tests 900. / Min refused because of the low survivability of the trunk.

The Mi-24А armament also included UB-32А-24 units with NAR C-5 and bombs in caliber up to 500 kg on the beam holders BDZ-57КрВ. The NAR was launched by a pilot using a PKV sight, bombing by an operator using OPB-1Р.

During the development of the first production Mi-24A, the front pilots paid attention to its good maneuverability and controllability. The car obediently performed turns on the slide, combat turns with a roll exceeding 60 °, and gained height with a pitch angle to 50 °, which significantly exceeded the established limits.

40 years to the legendary combat helicopter Mi-24 (part 2) Modifications A, B and D
Record helicopter A-10

Mi-24A in the Central Museum of the Armed Forces, Moscow


Placement of weapons on the left console: Phalanga-M ATGM 9М17М on the 2П32М-К-48 launcher and NAR units


Mi-Xnumha Sun Vietnam


Mi-Xnumha Sun Ethiopia


Mi-24A in Afghanistan


Mi-24A in South Africa


But a number of shortcomings came to light. Due to the high specific load on the area swept by the main rotor, in case of failure of both engines, the helicopter did not provide a safe landing in the autorotation mode in high altitude conditions and at elevated air temperatures.

TVZ-117 “raw” engines with a resource not exceeding 50 h caused a lot of complaints. The plant in Zaporozhye produced 1972 TVZ-60 “zero” series with 117 by the end, which passed with a number of deviations and limitations. They were used to master the serial production of the Mi-24 in Arsenyev, as well as for operational tests of helicopters in various conditions. Subsequently, TVZ-117 “zero” series was written off, without burdening the plants with the first overhaul. According to the analysis of the operation of the first TVZ-117 OKB S.P. Izotova developed a number of activities aimed at improving the engine. In August, 1972 successfully completed state tests of the modified TVZ-117. He became a model for the 1 series; these engines were made around 200.

For a specific type of army wits dubbed the Mi-24A "Crocodile". This name later passed on to other modifications. Mastering the machine was not without curiosities. It was the first domestic helicopter with retractable landing gear. Having forgotten about this, pilots often forgot to remove the landing gear after takeoff and release it before landing.

Mi-24A


Mi-xnumb


Mi-24D


Mi-25


In parallel with the Mi-24 in 1971, there was a modification of it with advanced weapons - the Mi-24B (product 241). The A-12.7A machine gun in the NUV-1 was replaced with the YakB-12,7 in the USPU-24 mobile remote installation with the KPS-53AB aiming station. As the ATGM used 9P145 "Phalanx-PV" with semi-automatic RKSN "Raduga-F".

Mi-24B prototypes in 1971 -1972 successfully passed the first stage of flight tests, but further work on it turned: the operation of the Mi-24A confirmed the previous conclusion of the military about the unsatisfactory review from the pilot and operator. During night flights at low altitude, ground lights were reflected in the flat panes of the lantern, which sometimes led to the loss of spatial orientation by the pilot.

Mi-24B on trial, 1971


OKB them. M.L. Mile has developed a new version of the nose of the helicopter with separate pilot and operator cabs at different levels with significantly improved visibility. In the summer of 1972, two new cars with new cabs were produced, designated Mi-24B (product 242). 23 September of the same year Mi-24В made the first flight. The development of ATVS 9K113 "Sturm-B" was behind schedule, so the Air Force offered an intermediate version, the Mi-24D, with a new cockpit, but with weapons of the Mi-24B type.

MI-24D

The state tests of the Mi-24D (product 246) took place from February to November 1974. Engineer G.I. Kuznetsov, test pilot S.V. Petrov, M.V. Razomazov and L.3. Tatarchuk. One of the main differences of the Mi-24D from the previous serial modification was the use of the YakB machine gun. The Council of Ministers decree on creating high-grade 24-mm and 12,7-mm machine guns for B-7,62 was issued in December 1968. The development of a large-caliber machine gun, which received the TKB-063 code, was entrusted to the TsKIB SOO, and 7,62-mm four-barreled TKB-XNXX.

Prototype Mi-24D


Installation of USPU-24 with a YakB machine gun and the antenna RKSN kRaduga-F ”on the 2P32M-K-48 starting device and NAR blocks


Mi-24D in the Central Museum of the Great Patriotic War


Dimensional model of the ATGM 9М17П on the launching device 2П32М-К-4В


Container UPK-23-250 and block UB-32А-73

























Already in December 1968, the customer approved the draft four-barreled 12,7-mm machine gun with automatic flue gas and 5000 firing rate / min, developed by PG. Yakushev. The highlight of the design was the mechanical starter, which consisted of a torsion bar and a planetary mechanism that provided the initial promotion of the barrel unit. This made it possible to abandon the electric motor used for this in foreign multi-barrels.

Three months after the defense of the technical project, the machine gun began to be fired. A serious problem was to ensure the required survivability of the trunks. She was provided by applying a cobalt alloy KVN-2 and cartridges with phlegmatized gunpowder. After testing TKB-063 at SRI-61 in 1971 - 1972. the design was finalized and in September 1972 was given three samples of the machine gun for ground state tests. They were successfully completed in August 1973.

In parallel, the designer machine gun PG Yakushev and his student B.A. Borzov improved their offspring. A sophisticated four-piston gas engine consisting of 88 parts, they replaced with a single-piston 12 parts. In December, 1972 in TsKIB SOO tested two machine guns with this novelty. The design has become more reliable and convenient in operation.

In the summer of 1974, the machine gun TKB-063, refined according to the results of state tests 1973, passed the ground tests at the Research Institute-61 and was put into mass production at the KMZ in Kovrov.

After the death of Yakushev in 1973, his work was continued by B.A. Borzov and V.I. Volkov. In 1975 - 1977 a machine gun mounted in a remote mobile unit USPU-24 passed a positive assessment of flight tests on the Mi-24D and Mi-24V. In March 1976, by a regulation of the Council of Ministers aviation machine gun YakB-12,7 (9A624) design Yakushev-Borzov was adopted.

The anti-tank complex 9P145 "Phalanga-PV" with semi-automatic guidance was created in KB "Tochmash" under the supervision of Chief Designer A.E. Well delman. In 1970, this ATGM successfully passed state tests and in May 1972 was adopted for service.

The effectiveness of the Mi-24D with the Phalanga-PVT ATCM increased, and the missile guidance process in real combat became simpler: the probability of a direct hit of the 9М17П missile in a tank exceeded 80%. The operator could use the complex and with manual guidance, which was used for light interference, performance at dusk, failures of semi-automatic equipment and the use of 9М17М rockets. At the same time, the minimum launch range increased to 0,6 km.

In 1973, the KMZ began the large-scale production of the 9М17П ATGM. It differed from the 24М9М rocket previously used on the Mi-17А by installing new tracers-lamps of increased power, which ensured a uniform radiation intensity throughout the entire flight trajectory. The launch range was 0,45-4 km, the launch weight was 31,6 kg, the average trajectory flight speed was 170 m / s.

With 1973, the Mi-24D was built by two factories - in Arsenyev and Rostov-on-Don. The order for its launch into mass production at the Rostov plant was released on 13 February 1972, and the following year the Rostovites handed over the first five helicopter gunships to the customer. These machines were equipped with TVZ-117 2 series engines with 300 h resource, in April 1976, the overhaul life was established at 500 h, with a general designated 1000 h. They produced about 2000 2 series engines, a significant part of them was operated before so far

In total, 1977 Mi-340D helicopters were built around 24 in Arsenyev and Rostov. For deliveries abroad developed export version, called the Mi-25. These machines, produced at RVZ, were distinguished by a simplified set of equipment and the “Scorpion” ATGM - the “Phalangi-P” export variant.



Mi-24D of the Armed Forces of Hungary



Mi-24D AF GDR


Mi-24D sun of Cuba


Mi-XNUMHD sun Mali



Mi-24D of the Armed Forces of Poland


Mi-24D of the Armed Forces of Slovakia


To be continued ...
Author:
Articles from this series:
40 years to the legendary Mi-24 combat helicopter (part of 1) Creation
40 years to the legendary combat helicopter Mi-24 (part 2) Modifications A, B and D
40 years to the legendary Mi-24 combat helicopter (part of 3) Modification B
40 years of the legendary combat helicopter Mi-24 (part of 4) Modifications P and VP
40 years to the legendary combat helicopter Mi-24 (part of 5) Modification Mon
40 years to the legendary Mi-24 combat helicopter (part of 6). Modifications of P, K and VM
40 years to the legendary Mi-24 combat helicopter (7 part) Mi-35
40 years to the legendary Mi-24 combat helicopter (part of 8) Foreign upgrade options
40 years to the legendary Mi-24 combat helicopter (part of 9)
40 years to the legendary Mi-24 combat helicopter (part of 10) Technical specification
40 years to the legendary Mi-24 combat helicopter (part of 11) Mastering in structural units
40 years to the legendary Mi-24 combat helicopter (part of 12) in Afghanistan
33 comments
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  1. Sirocco
    Sirocco 23 March 2013 10: 06 New
    10
    Mi 24, so to speak, is a field worker. laughing A kind of AK 47, in Helicopter Engineering, is now adequately presented with its updated look in the form of Mi - 35. Kingdom of Heaven is Milu. honor and respect for his work, and the work of all those who create these machines.
    1. Chicot 1
      Chicot 1 23 March 2013 12: 12 New
      20
      Quote: Sirocco
      Mi 24, so to speak, a field worker


      wink wink wink .
  2. avt
    avt 23 March 2013 10: 14 New
    +5
    good A good continuation, I hope the author of the Afghan period will show no worse.
    1. Andrey77
      Andrey77 23 March 2013 15: 50 New
      +5
      Afghanistan has brought worldwide fame to this machine. I hope the site will tell you about the role of "Crocodile" in this war. For the sworn allies (USA) were jealous ..
      1. ICT
        ICT 23 March 2013 19: 21 New
        +1
        here was a cycle about the Afghan period:

        http://topwar.ru/21468-vertushki-afganistan-mi-24.html
  3. radio operator
    radio operator 23 March 2013 10: 30 New
    +5
    It is interesting to see from photographs the formation of this rotorcraft from a freak - the ugly duckling Mi-4AV to the predatory appearance of a monster that inspires awe and horror, Mi-24.
    Truly, a good technique must be beautiful.
  4. Stas57
    Stas57 23 March 2013 10: 57 New
    +5

    Mi 24, so to speak, is a field worker.

    and above all mountains
    1. smprofi
      smprofi 23 March 2013 14: 47 New
      +1
      Quote: Stas57
      and above all mountains

      laughing some civilians in the first part, in the comments, do not think so ...
      1. Sirocco
        Sirocco 23 March 2013 16: 13 New
        +1
        Some who consider themselves military personnel inattentively read and view published photos. lol I have not heard of such a helicopter, an aircraft created only for mountainous terrain, the mountains begin at 1000 meters. Cuba, Mali, Poland, Germany, In these countries, some mountains))))) laughing
  5. understudy
    understudy 23 March 2013 11: 43 New
    +3
    For me, 24D is the most beautiful helicopter. It inspires its appearance and respect and fear. fellow
  6. erix-xnumx
    erix-xnumx 23 March 2013 11: 59 New
    +3
    Helicopter soldier.
  7. Shturmovik
    Shturmovik 23 March 2013 12: 33 New
    +3
    Great helicopter, glorious warrior!
  8. Prapor Afonya
    Prapor Afonya 23 March 2013 12: 34 New
    +3
    An example from real combat practice is also known: during the Iran-Iraq war, the Mi-24 was shot down by a Phantom with cannon fire. Thus, the ability of combat helicopters to perform tasks to combat an air enemy was proved.
    1. Iraclius
      Iraclius 23 March 2013 14: 02 New
      +2
      And from the same war, it is known that the American A-10 Thunderbolt II attack aircraft effectively hit the GAU-8 prodigy ... with their own guns. lol
      1. smprofi
        smprofi 23 March 2013 15: 26 New
        +2
        Quote: Iraclius
        American attack aircraft A-10 Thunderbolt II

        you already remember "Storm in a Glass", this is not the Iran-Iraq war
        1. Iraclius
          Iraclius 24 March 2013 13: 32 New
          +1
          Yes, yes, I made a reservation. Desert Storm, of course. yes
    2. smprofi
      smprofi 23 March 2013 15: 16 New
      +1
      Quote: Prapor Afonya
      Thus, the ability of combat helicopters to perform tasks to combat an air enemy was proved.

      Iran-Iraq war - from 1980 to 1988 ...
      hmmm ... in the year 1976 or 77, I watched a couple of educational films, labeled "Secret" about VOPs: one was on the history of creation, the second was used with the chronicle of military operations (Vietnam, the Middle East) and exercises ( mainly the territory of the Federal Republic of Germany). and I saw something like a manual, also stamped, on combat helicopters with "helicopter-helicopter" and "helicopter-fighter" air combat schemes. so ... what the Arabs performed - everything had been tried by the "white man" long before them
  9. Iraclius
    Iraclius 23 March 2013 12: 46 New
    +1
    Option Mi-24D really became a formidable combat vehicle. And this can be seen even in the changed appearance. YakB machine gun - a real sewing machine! 5000 rds / min - this is not for you khukh-mukhras! good
    And what was the armor protection of the car?
  10. barbiturate
    barbiturate 23 March 2013 12: 48 New
    +1
    an excellent helicopter, glory to the creators, the statements of the probable enemy on it are known, the 5+ strike weapon complex was created, now his sons are needed, with an analysis of whether the compartment for the landing is needed, such a load on the main rotor, etc. We have always been able to do!
  11. cahekmosa
    cahekmosa 23 March 2013 13: 11 New
    +2
    flying BMP, super technology, and time confirms this
    1. Iraclius
      Iraclius 23 March 2013 13: 13 New
      +2
      By the way, just like a flying BMP, a helicopter seems to be not very good - if there is infantry on board, the car is overloaded, which negatively affects the dynamic characteristics. request
      1. smprofi
        smprofi 23 March 2013 15: 07 New
        +1
        philosophical conversation

        Quote: Iraclius
        negatively affects dynamic performance


        Mi-24 - combat transport helicopter. for some reason they want him to be a super-duper VOP and wipe his nose with the same AH-1 Cobra or AH-64 Apache. This is a different class. and with different initial tasks in the design and creation.
        look closely from 1'16 ":

        [media = http: //www.youtube.com/watch? feature = player_embedded & v = oDucAcCKG6I]

        and the fact that because of "poverty" (in the absence of real attack helicopters) the Mi-24 was used as a GP ... well, who is to blame for that?

        for some reason, no one doubts that, for example, a tank is needed to break through the line, a specialized machine is needed for reconnaissance, and armored personnel carriers / infantry fighting vehicles are not particularly suitable for these purposes
        1. Iraclius
          Iraclius 24 March 2013 13: 36 New
          +1
          You're a little cunning. The technical assignment was issued specifically for the transport-combat helicopter. Those. "flying infantry fighting vehicle". It was assumed that the machine should equally well transport and drop infantry, and support it with fire. It was only later that the viciousness of such a concept became clear and the Mi-8s of various modifications appeared precisely as transporters capable of supporting them with fire, and the Mi-24, in fact, turned into a purely shock machine.
          1. smprofi
            smprofi 24 March 2013 18: 30 New
            +2
            Well, why are you cunning?

            Quote: Iraclius
            vehicles must equally well transport and drop infantry, and support it with fire.

            but doesn't do it? or with a full load, the Mi-24 is not able to write aerobatics? well so ...

            Zaporizhzhya "Motor Sich" now makes new engines TV3-117VMA-SBM1V

            In the process of testing, it was possible to set a new climb rate for helicopters: Mi-24 - gained altitude of 5 kilometers in 9 minutes. These indicators are twice the standard indicators for this type of combat vehicles.
            The gas turbine turbojet engine TV3-117VMA-SBM1V is equipped with a free turbine, which makes it possible to automatically set take-off power depending on the type of helicopters. This engine also has extended resources - 1200 flight hours, and up to the first overhaul - 4000 hours. Moreover, according to the developers, the Ukrainian engine has a limit on the ambient temperature of + 52 ° C, while for all other engines that are currently used in aviation, this threshold does not exceed + 38 ° C. During testing, the launch of the TV3-117VMA-SBM1V engine was verified at an altitude of 6000 meters. The real breakdown of the engine in a high-altitude chamber is 9000 meters.


            although, again ... to demand GP capabilities from a transport-combat helicopter - well, this is not serious! and the Mi-24 did not turn into a purely impact machine, but turned!
  12. vadson
    vadson 23 March 2013 13: 21 New
    +1
    crocodile - a good animal, 5 +++++++
  13. suharev-52
    suharev-52 23 March 2013 14: 05 New
    +2
    One of the best representatives of helicopters in the world. Keep it up. Sincerely.
  14. smprofi
    smprofi 23 March 2013 14: 52 New
    +1
    some drawings will not hurt







  15. Vital 33
    Vital 33 23 March 2013 15: 05 New
    +2
    Yes, the car is damn good. Even foreign pilots admit it ...
    The pilots called the modification with the first cockpit a "veranda", if I'm not mistaken ...
    1. smprofi
      smprofi 23 March 2013 15: 18 New
      0
      in the first part was discussed, do not be lazy, read the comments
  16. dark_65
    dark_65 23 March 2013 16: 11 New
    +1
    What a Roman sword from the time of Caesar, that a helicopter, just perfectly made weapons (in this case, murders. But they thought about it, it's nice to look at them, hold in their hands (in our case, control levers), a sense of reliability, because it’s just WEAPON with capital letter .. and I think that with its functionality, neither one nor the other will not lose for a very long time.
  17. WS
    WS 23 March 2013 19: 23 New
    +2
    I sat in both cars, in the first one with a veranda it was somehow more fun, a friend sits in front, passengers can "reach out" for a visit, I didn't notice this at 24D, but the review is cool. In 24A, in my opinion, it was possible to disconnect the machine gun and drag it with you, in 24D it was built-in.

    Mi-35 is an export option, it appeared in our units due to the fact that foreigners probably refused. Maybe someone has an opinion on this matter?
    1. smprofi
      smprofi 23 March 2013 19: 52 New
      +1
      the veranda was abandoned due to the fact that the flashlight flashed and the pilot with the shooter was hard to see
      Quote: WS
      Mi-35 is an export option, it appeared in our units due to the fact that foreigners probably refused. Maybe someone has an opinion on this matter?

      my opinion:
      there is simply a "public play": the T-72 was modernized - a super new T-90 appeared, the existing Mi-24 was modernized - the Mi-35 appeared (at the same time, they somehow completely forgot that even under the Soviet Union, export vehicles were designated by such an index) ... but the journalists happily beat the tambourine: "New Mi-35 helicopter!"
      1. Shturmovik
        Shturmovik 23 March 2013 20: 08 New
        +2
        I am not a special connoisseur of helicopters, but I can notice that when I was in Torzhok and watched this car, I left only good impressions. New avionics, weapon navigation system
  18. воронов
    воронов 24 March 2013 18: 25 New
    +2
    Cool us Crocodiles over the river and in the UK rescued
  19. Proud.
    Proud. 24 March 2013 20: 56 New
    +2
    Quote: Sirocco
    Mi 24, so to speak, is a field worker.

    ... and a plowman. Even not so.