Military Review

40 years to the legendary Mi-24 combat helicopter (part of 10) Technical specification

12



The helicopter is made according to the classic single-rotor scheme with a tail rotor. Crew members are placed separately: navigator-operator and pilot in individual cabins, flight mechanic in the cargo compartment.

The carrier system is a five-blade propeller with a diameter of 17 300 mm with hinged blades attached to the sleeve, rotating clockwise (as viewed from the top of the rotor). The shape of the blades is rectangular in plan, the relative thickness is -11,12%, the chord is 580 mm. The design of the blade is typical: extruded spar, repeating the outer contour of the contours of the nose of the blade, made of aluminum alloy, to which the tail bays with aluminum casing and honeycomb core are glued. To provide the necessary rigidity, the upper and lower flanges of the side member are inside the rib. The edges close to the toe serve as guides for the counterweight consisting of separate parts providing the necessary lateral centering of the blade.

The helicopter's transmission includes a three-stage main gearbox BP-24, a tail propeller shaft connecting the main gearbox to the gearbox and intermediate gearbox, as well as an intermediate gearbox with a tail gearbox. The tail gearbox transmits torque to the steering screw, changes the direction of rotation of the shaft and reduces its speed. The three-bladed pulling tail rotor with a mechanical change in flight pitch rotates clockwise. The range of angles of installation of the blades from -7 ° 55 'to + 20 - 25 ° - depending on the activation or deactivation of the system SPPU-52. The tail rotor blade is all-metal, with a glass-plastic cover. The diameter of the tail rotor - 3908 mm.

The power plant consists of two turboshaft engines TVZ-117В, auxiliary power unit AI-9В with a starter-generator STG-3 and a fan unit for cooling the main gearbox. The longitudinal axes of the engines are parallel to the center plane of the central part of the fuselage with an inclination forward and downward relative to the building horizontal at an angle 40 ° 30 '. On the exhaust pipes provided for the installation of the EVA. To protect the engine from sand and dust, ROMs are mounted in the engine air intakes. Engines are equipped with autonomous anti-icing, oil and starting systems. The AI-9B auxiliary power unit is located behind the main gearbox across the fuselage.

40 years to the legendary Mi-24 combat helicopter (part of 10) Technical specification
Operator's cabin


The cockpit


The nose of the fuselage with the installation of USPU-24


EVA


NAR blocks and APU-8 / 4-U launch pipes for ATGM 9М114


Main landing gear


Cargo and passenger compartment and the view from it on the pilot's seat


The fuel system includes five built-in tanks with a total volume of 2130 liters equipped with a neutral gas system and polyurethane foam inserts, fuel pumps, fuel lines, valves, a fuel gauge and a drainage system. Fuel - kerosene brand T-1 or TC-1. Tanks are located under the floor and in the back of the cargo compartment.

To maintain the centering of the helicopter in the process of generating fuel, the main tanks are located near the center of mass, under the floor and in the back of the cargo compartment; The order of development of fuel is regulated by automation. For long-haul flights, up to four PTB-450 fuel tanks with a capacity of 450 each are suspended under the wing.

The fuselage of the helicopter is a semi-monocoque, consisting of the nose and central parts, the tail and end beams, separated by one technological and two constructive connectors. The crew and cargo cabins are sealed and equipped with air conditioning.

The cargo compartment with four windows on each side has the following dimensions: length 2825 mm, width 1460 mm and height 1200 mm. On her right and left sides are double doors. For convenience, the upper and lower, equipped with steps, door leaves have locks open position. There are two portholes in the upper flaps. The first three portholes on both sides open inwards and are equipped with brackets for fastening small weapons landing. On both sides of the diametral plane of the helicopter, folding "seats for the landing force are installed.

Above the cargo compartment there is a compartment in which the TVZ-117В engines are located, the main gearbox, auxiliary power unit and hydropanel. A fan installation is located above TVZ-117, in front of the main gearbox. The tail beam is of oval section, semi-monocoque design. Inside it on top of the brackets fixed transmission shaft. In the lower part of the beam there is a unit DISS-15D with antennas, and on the left side there are two signal flares ESCR-46. A flashing beacon is mounted on the upper surface of the tail boom behind the VHF antenna.

The end beam consists of a one-stick controlled stabilizer and vertical tail. In the end beam are intermediate and end gears, as well as connecting the tail transmission shaft connecting them. On the output shaft of the gearbox, closed by a pylon, the steering screw is fixed. There is a safety tail support at the bottom of the horizontal part of the end beam.

Wing consoles - two-spar design, trapezoidal shape in the plan. To place weapons on each console, there are two pylons and a special beam on the bottom of the vertical ends that are bent down. In the upper front part of the left end-set installed cinema camera C-13-300-1OO-OS.

Chassis - three-bearing, retractable, with pyramidal safety support under the end beam. Front steered support - two-wheeled, with K329A non-brake wheels (size 400x200 mm). On the main supports are single brake wheels KT135 (720x320 mm). Cleaning and release of the chassis - by means of hydraulic drive.

The control of the helicopter in the longitudinal, transverse and vertical directions is carried out with the help of a swashplate, the track control is controlled by a tail rotor. The slider of the automaton is connected with the stabilizer: the coordinated deviation of the latter creates the longitudinal control moment corresponding to the flight mode.

In the cockpits of the pilot and navigator-operator-torah mounted control knob, pedal and lever "step - gas." The helicopter is equipped with autopilot VUAP-1, which is part of the SAU-B24-1. In the channels of the control system in three axes and the pitch of the rotor in an irreversible pattern are included four executive control units KAU-110. The limit control angle of the SPPU-52 steering rotor blades is included in the track control channel. To protect the tail transmission shaft from overload when the pilot gave a “foot” to the pilot, the hydraulic damper SDV-BOOO-OA was installed in the track control system. The control system wiring is mostly hard. Cables are used to control the stabilizer, stop the engine, rotor brake and, in part, the tail rotor (from the main to the tail gearbox).

The helicopter has three hydraulic systems: main, auxiliary and emergency, working from individual pumps NP-92А-4.

Pneumatic system - balloon type. The cylinders used are internal cavities of the main landing gear and a reserve cylinder located in the compartment of the power plant.

Radio communication equipment provides communication with the ground, between helicopters and between crew members. It consists of the P-860-1, P-863 VHF radio stations, as well as the Eucalyptus-M828 P-24 (for communication with ground forces) and the Karat-M24 HF radio station. The communication between the crew members is supported by the intercom SP-8U. NAZ has P-855UM emergency radio stations.

Flight navigation equipment includes ARK-15М and ARK-U2 radio stations with a P-852 receiver, a Doppler velocity and demolition meter Diss-15D, a radio altimeter A-037, and flight instruments in the pilot’s cabin. The special equipment includes the identification system “yours is alien” SRO-2, the radiation indicator of the L-006 radar “Birch”, the speech informant RI-65, the device for interfering with rockets with the GOS CO-EP-V1А “Lipa” installed on top of the fuselage in front of the tail boom and ASO-2В units along the sides behind the wing.

The life support system includes air conditioning and an oxygen system for flying at altitudes above 3 km. The armament consists of built-in shooting-cannon and hanging. The first is the installation of USPU-24 with a YakB-12,7 machine gun with 1470 ammunition ammunition. The machine gun is operated by the navigator-operator with the help of the KPS-53AB sight station with the KS-53 collimator sight. Suspended weapons include guided and unguided weapons. Unmanaged include NAR, bombs, incendiary tanks and containers KMGU-2. Shooting the NAR and from the firing-cannon containers is carried out by the pilot using the automatic sight АСП-17В, which is also used for firing from the machine gun YakB-12,7 fixed parallel to the longitudinal axis of the fuselage. The PUS 36-71 firing control equipment allows production of four, eight and 16 rockets from each block.

Guided weapons include ATGW "Sturm-V". The eight 9М114 ATGMs are placed on APU-8 / 4-U mounted on wingtips and external pylons. Aiming is carried out by the navigator-operator, and targeting by the equipment of the RCCH in semi-automatic mode.

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
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  1. Prapor Afonya
    Prapor Afonya April 2 2013 07: 49 New
    +3
    The next, tenth series laughing
  2. smprofi
    smprofi April 2 2013 12: 52 New
    +6
    and about suspended weapons is EVERYTHING? belay
    no ... I'm so dissenting!

    Unguided rockets

    C-5




    The S-5 uncontrolled aircraft missile consists of a solid-fuel engine with a fuel bomb placed in a turned steel case, to the front of which a warhead with a fuse is attached, and to the rear there is a nozzle with attachment units. The stabilizer petals are articulated forward along the flight, covering the nozzle when folded. Their shape exactly repeats the outer contour of the nozzle, and the required plumage area is recruited due to the number of petals. When storing C-5 and equipping the launch blocks, the petals are held in a folded position by a ring of thick paper or plastic, and when starting and leaving the guide they open under the action of a spring and an incoming air stream.

    The S-5M and S-5M1 missiles are designed to combat enemy manpower and weakly protected targets (vehicles), artillery and missile positions, airplanes at airfields, etc. Their warhead is combined - high-explosive action with a fragmentation shell, which, when broken, forms about 75 fragments weighing 0,5-1 g. The length of the S-5M rocket is 882 mm.

    The S-5MO rocket is equipped with a 2,1 kg warhead of reinforced fragmentation, consisting of twenty steel rings with notches for regular crushing. The warhead in the explosion gives 360 fragments of segments weighing 2 g.

    To combat armored vehicles created S-5K with a mechanical fuse B-586. Weight of the projectile with a fuse 3,65 kg. The weight of the warhead is 1,13 kg. Weight BB 287 g.

    In 1971, the S-5KO multipurpose missile with the combined cumulative-fragmentation warhead was adopted. The weight of the rocket is 4,45 kg, the weight of the warhead is 1,6 kg.

    The S-5S and S-5SB missiles are equipped with a warhead stuffed with 1000-1100 swept strike elements to destroy manpower.



    The launch of the S-5 rocket is carried out using 32-barrel unified blocks UB-32.
    1. smprofi
      smprofi April 2 2013 12: 55 New
      +3
      C-8

      S-8 unguided missiles are designed to destroy various types of ground targets: from manpower to armored vehicles.



      The S-8 missile retained the concept and layout of the S-5 rocket.

      Based on the basic design of the S-8 with a universal cumulative-fragmentation warhead, several rocket modifications were developed: the S-8M and S-8KOM with a modernized warhead of enhanced fragmentation action and a solid-fuel engine with an extended operating time.



      The S-8S missile has a warhead carrying 2000 arrow-shaped striking elements for engaging manpower.

      The S-8BM missile has a penetrating concrete-piercing warhead piercing a reinforced concrete layer up to 0,8 m thick.

      The S-8D and S-8DM missiles have a warhead with a volumetric detonating mixture; 2,15 kg of the liquid components of the explosive are mixed and form an aerosol cloud of a volume-detonating mixture. Explosive explosive action is equivalent to 5,5-6 kg of TNT.



      To launch the S-8, twenty-charge B-8V20A blocks are used.

      1. smprofi
        smprofi April 2 2013 12: 58 New
        +2
        C-13



        S-13 unguided missiles belong to air-to-ground missiles. The basic missile of the system is a concrete-piercing unguided rocket S-13, consisting of a high-energy rocket engine of solid fuel of large elongation and a penetrating warhead.

        The S-13T missile has a penetrating 2-module warhead that fires inside the attacked object after breaking through its protective layer (up to 6 m of land or 1 m of reinforced concrete). When it gets into the runway, up to 20 m surface.

        The S-13-OF missile has a high-explosive fragmentation warhead, which gives 450 fragments weighing 25–35 g that can penetrate armored personnel carriers and infantry fighting vehicles when ruptured.

        The S-13 and S-13T missiles have a warhead of reduced diameter (90 mm versus 122 mm of the main part of the rocket).

        1. smprofi
          smprofi April 2 2013 13: 00 New
          +3
          C-24



          The design of the heavy unguided rocket ARS-240 began at NII-1 in accordance with Decree of the Council of Ministers of the USSR No. 2469-1022 of March 19, 1953. The missile was intended to destroy ground targets. The high-explosive fragmentation warhead contains 23,5 kg of explosives. A solid propellant rocket engine (operating time 1,1 s), consisting of 7 pieces (72 kg) with a star-shaped channel, is used as a power plant. The engine has 7 nozzles arranged in a circle. The bevel of the nozzles relative to the longitudinal axis allows the rocket to spin up to 450 rpm.

          For regular crushing, the casing of the warhead has grooves and mesh quenching with microwave currents. In an explosion, it forms up to 4000 fragments. To enhance the damaging effect, a non-contact radio fuse RV-24 "Beetle" was used, which operates at a height of 30 m above the target. To destroy protected objects, a B-575 contact fuse is used, which has three degrees of deceleration (depending on the type of target). The coating of the attacked structure makes its way into a robust warhead enclosure, which is undermined after deepening into the object.

          1. smprofi
            smprofi April 2 2013 13: 02 New
            +3
            Guided missiles

            9M17P "Phalanx-PV"




            The Falanga-PV anti-tank missile system is designed to destroy enemy’s armored vehicles with semi-automatic and manual control in direct optical visibility.

            Created in the Design Bureau of Precision Engineering (chief designer A.E. Nudelman) on the basis of the Falanga-M complex. Adopted in 1969, since 1973 the Mi-24D combat helicopters with four 9M17P ATGMs went into production.



            The 9M17P rocket is made according to the normal aerodynamic design and, in general, is similar to the 9M17M rocket of the Falanga-M complex. The main difference is the use of a new semi-automatic radio command system coupled to the Rainbow-F equipment on a carrier helicopter. Aiming missiles at the target is carried out according to the method of three points. Governing bodies - aerodynamic wheels.
            1. smprofi
              smprofi April 2 2013 13: 05 New
              +3
              9M114 "Sturm-V"

              The Sturm-V complex is designed to destroy modern tanks, infantry fighting vehicles, ATGM and SAM missile launchers, long-term firing points like DOT and DZOT, low-flying low-speed air targets, as well as enemy manpower in shelters.



              The rocket of the Sturm-V complex (of all modifications) is made according to the duck scheme. The rocket is a two-stage. Control and guidance equipment - an optical sight with an integrated direction-finding channel, ballistic computer, radio command communications equipment "Rainbow-Sh." Type of launch - from the transport and launch container with the help of a knockout charge.



              Missile guidance system - semi-automatic, radio command, with infrared tracking signal. It has high noise immunity due to the use of two special codes and five fixed frequencies when hovering a missile. To control the shooting, special programs have been developed that allow the rocket to initially fly along a trajectory above the line of sight, and when approaching a tank at a distance of 500-700 meters, it lowers and hits the target. This enables the operator, regardless of weather conditions and rocket engine operation, to always see the target. At the maximum firing range, the accuracy of the ATGM control system does not exceed 0,6 arc minutes. This allows you to fire at any small armored targets and even helicopters in hover mode and approach. The maximum height of destruction of air targets (launch at sea level) is 3000 meters.

    2. avt
      avt April 2 2013 20: 31 New
      +1
      Quote: smprofi
      and about suspended weapons is EVERYTHING? belay
      no ... I'm so dissenting!

      Well issued !!! good I washed the author specifically today! I’ll wait and I’ll spit it until they stop good laughing At least one but I’m throwing. laughing
  3. smprofi
    smprofi April 2 2013 13: 18 New
    +2
    R-2V "Barrier-V"

    The Barrier-V anti-tank missile system was developed by the Ukrainian Luch design bureau. The maximum firing range used by the ATGM R-2V complex is 7500 m, armor penetration behind dynamic protection is not less than 800 mm.

    1. smprofi
      smprofi April 2 2013 13: 22 New
      +3
      9M120 "Attack"

      The missile of the Ataka-V aviation missile system was created on the basis of the 9M114 missile of the Sturm-V complex using a more powerful engine, which allowed to increase the firing range of the complex, as well as a new, more powerful warhead.





      The most effective use of the UR "Attack" at a range of 800 to 4000m. In this case, the helicopter is located at low altitude in the zone of least vulnerability. The probability of defeating the tank (distance = 4 km) is 0,65-0,9. The launch tube serves as a guide for the rocket being launched, as well as a container for transporting and storing the rocket. Type of launch - from the transport and launch container with the help of a knockout charge.

      1. smprofi
        smprofi April 2 2013 13: 26 New
        +4
        9M39 "Needle-V"



        The Igla-V missile is designed to destroy slowly and medium-flying air targets. The weight of the rocket is 10.8 kg. The flight speed reaches 570-600 meters per second. Range is limited to five kilometers. The needle is equipped with a fairly powerful 2 kg warhead. The needle is able to withstand large overloads and has excellent noise immunity characteristics. It is a type of "let-forget", that is, a fully automatic target tracking system.



        The Eagle uses a dual-spectrum GSN 9E410 developed by LOMO, JSC with logical selection, capable of distinguishing between true and false targets under conditions of artificial interference in the infrared range. In the homing head there is also protection against the influence of interference modulation stations. Compared with previous models of SD, the firing range on reactive targets at oncoming courses has significantly increased due to a significant increase in head sensitivity. The Needle has a radar interrogator. The vortex sensor in the fuse provides in-depth detonation of a high-explosive fragmentation warhead and the remains of the detonation-friendly propellant propellant fuel. The “needle” effectively hits an air adversary when it uses heat traps with a drop rate of up to 0,3 seconds. and a radiation power exceeding that of the target itself. The likelihood of hitting a Phantom-type jet in the oncoming course is 0,48, and on the catch-up - 0,33. In the case of heat traps, this probability is reduced by only 30%. Compared to the Strela-2M portable anti-aircraft missile system, the probability of hitting a target with a missile of the new Igla and Igla-V complex increased by more than 8 times.

  4. skrava
    skrava April 2 2013 18: 30 New
    0
    There are many inaccuracies, and launchers from Sturm-V are installed on launchers from Phalang