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Fighting vehicle BM-24

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    Basing

    :

    chassis

    management system:

    Uncontrolled

    Warhead:

    -explosive, Chemical

    Application:

    Multiple rocket launchers

    Country:

    Russia

    Range:

    11 km.

    year development:

    1951

    fighting machine BM-24 Fighting vehicle BM-24 was intended for the suppression and destruction of fortifications, strong points and nodes of resistance, destruction and suppression of artillery and mortar batteries, destroy and suppress manpower and materiel in concentration areas. < / p>

    During development system designated "M-31A." Development was carried out based on the tactical and technical requirements on the number 007 rocket system "M-31A" for the 4th Artillery Office Home Office of the Armed Forces, approved the artillery commander of the armed forces, Chief Marshal of Artillery Voronov 04/25/1947

    BM-24 (GAU index - 8U31) was established in GSKB Spetsmash (former CSC at the plant "Compressor" Moscow) under the leadership of VP Barmina. As a combat vehicle chassis was adopted vehicle trail ZIS-151 (ZIL-151). One prototype symbols - EPM-44.

    military trials of M-31A - the future M-24 fighting machine BM-24 turbojet and 240.6 mm caliber shells were carried out in the period from July 25 to August 31, 1950 at the State Central landfill (GPC) ( Kapustin Yar), led by Lieutenant-General of Artillery SF Nilov. For this purpose, the landfill were delivered four prototype combat vehicle BM-31A and 1,000 rockets M-31A. Apart from them, in order to conduct comparative tests on HPC were served 4 regular combat vehicle BM-31-12 and 325 rounds of M-31UK with fuses GVMZ-1. For testing purposes and objectives concerned:

    verification of combat, technical and operational characteristics of the system and their compliance with the tactical and technical requirements;

    determine the possibility of solving problems on the defeat and destruction of well-covered purposes (manpower and materiel located in the trenches) within the whole range of shooting at different angles of vertical and horizontal fire, as well as the suppression and destruction of strongholds. < / p>

    definition of reliability and effectiveness of the projectile M-31A fuse with B-361 in their usability goals when firing and transport.

    identification of structural, operational and ballistic advantages and disadvantages of the combat vehicle BM-31A, M-shell and fuse 31A B-361 in comparison with the regular BM-31-12 with M-31UK projectile and fuze GVMZ-1.

    issuing conclusions on the feasibility of adopting the Soviet Army artillery BM-31A, projectile M-31A and B-361 fuse instead of regular BM-31-12, M-31UK and GVMZ-1.

    In tests was performed combat vehicles running in a charged state and comparative shooting. Test mileage combat vehicles and missiles were successful.

    After all the necessary tests and repeated changes in the Regulation on the adoption of a, the latter was signed in February 1951. Unfolded simultaneously work on the serial production of shells, fuses and a new system of combat vehicles M-24. According to others the system was adopted by the Soviet Army on the basis of the decision of the Council of Ministers № 875-441ss from 22.03.1951.

    System became the first post-war system, adopted by the Soviet Army, which was part of the firepower of the USSR, and later foreign countries: West Germany, Egypt (United Arab Republic) (including the shells of M-24F (F-961 index) and M-24FUD (index F-961U), Cuba, Poland, North Korea, Syria, Somalia, Israel (captured as a trophy and production was organized at least projectile), Angola, Mozambique, and possibly others. In the mid 80 - x system it was still in service with the Soviet Army and issues guidance service on fighting machine BM-24 (index 8U31) and shells.

    Fighting vehicle BM-24 belonged to the brigade (shelves) subordination of the body. In total, the small or mechanized corps had 54 fighting machine BM-24.

    In BM-24 for 240-mm shells turbojet was created fighting machine BM-24T chassis medium artillery tractor crawler AT-S (item 712). Fighting machine BM-24T entered service tank corps of the Soviet Army. Compared with wheeled combat vehicle BM-24T was expensive, had a lower speed on the highway, reduced lifespan. But, having a high cross, was able to act in a tank part in cross-country. The principal difference BM-24T from BM-24 was a replacement for tubular cell guides.

    In November 1952, a draft of the theme: "Fighting vehicle BM-24P-based floating tracked armored personnel carriers (to 750)" for firing projectiles turbojet M-24F.

    In accordance with the USSR Council of Ministers № 144-85ss of 4 February 1956 on the tactical and technical requirements GAU number 007109 from 10 February 1956 developed high-explosive projectile turbojet long range MD-24-F rocket system supplied M-24 . July 10, 1958 g in military unit 33491 was tested for accuracy by shooting areas experienced long-range missiles turbojet MD-24F design NII-1. Shooting is done with a single rail mounted on the carriage 152mm howitzer cannon-ML-20. Note that in the 30-ies in the USSR on the basis of artillery firing experienced a single rocket was created installation area of missile weapons (see photo) and polygons artillery mount (see photo) to run 245 mm rocket explosive projectile . This solution was used in the polygon practice in the future (I wonder what the U.S. military in Iraq also found multiple rocket launchers on the basis of artillery with transport and launch container from combat vehicle Brazilian MLRS ASTROS - see photo). < / p>

    USSR Council of Ministers N 426-211 on April 17, 1957 NII-1 was determined GKOT lead organization for the development of a missile "MV-24F" with a ramjet engine and a range of 30-40 km in set of M-24, with a target date of presentation of the technical project in the III quarter of 1958. In the process, the specialists faced a number of difficulties, in particular, the presence of specific vibrational combustion ramjet chamber, special issues of structural strength, etc.

    an unspecified date created or worked Rockets MS-24 and MS-24FUD Equip poison.

    After

    edition of the service "Fighting vehicle BM-24 (8U31 index)" in 1958, fighting machine BM-24 was subjected to modernize in order to increase the strength of mechanisms and its performance characteristics as a whole. New model was given the name "Fighting vehicle BM-24M (index 2B3)".

    In 1957, the Main Artillery Directorate (GAU) is concerned job predeskizny elaborate combat vehicle BMD-24B.

    Composition

    fighting machine BM-24 Fighting vehicle BM-24, developed by the classical scheme with the placement of the artillery on the back of the modified chassis truck ZIS-151. Artillery unit BM-24 package includes 12 of the guide, farm, swing frame, cabinet, stretcher, lifting, turning and balancing mechanisms, electrical equipment, sights and special equipment chassis. Package guide frame (cell) type made of tubular elements Each guide - four longitudinal tubes fastened four frames - easy form spatial structure within which is located a rocket. Each rail mounted lever pin, two Zamkova-locking mechanism holding the rocket in the stowed position from moving back and forth. Guides located on a farm in two rows (see diagram). In each row of mutually parallel directing only the average number 9 and 2, 11 and 4 of the remaining guides are arranged so that they form a fan convergent, ie, the guide number 5 and 7, 6 and 8 are arranged at an angle relative to the four division inclinometer middle rail and the guide number 1 and 3, 10 and 12 - the angle goniometer in seven divisions. Farm with mounted rails 12 is in the form of spatial and welded together with them forms part of the rocker (see photo). Note that the idea of using branched guide has been implemented in the design of the machine, the proposed Kleigels late in the first half of the XIX century (see the diagram and description).

    swing frame with a swinging part, turning, lifting and balancing mechanisms, iron sights is the rotating part of the launcher. Rotating frame under the action of rotating mechanism rotates on a pedestal, which supports the three vertical rollers. Six horizontal rollers center the rotation of the swing frame and hold it on the cabinet from tipping over. Tumba is rigidly attached to the subframe, the subframe, in turn, is fixed to the axis of the vehicle Langeron.

    rotary screw-type mechanism is used to traverse rails within ± 70 ° from the longitudinal axis of the combat vehicle. Linkage screw type, serves to impart guide elevation angles. From the hoist guide can be shaped elevation angles of +10 to +50 ° sector of the horizontal firing ± 70 °, and from 0 to 50 ° to the horizontal fire sectors, 25 ° to the right and left sides. Hoist and manual rotary mechanisms. Counterweight mechanism spring, push-type, serves to reduce stress on the arm hoist drive.

    Electrical serves to ignite the powder charge projectile, it consists of two batteries, switch, junction box, wires, contacts folding levers and external coil. Electric current flows from the battery to the switch in the booth, fighting machine, and from there by wire (alternately) to contacts folding levers guides. With the flip of the lever contact is routed to the current candle shell, thereby igniting the powder charge in the projectile and shot.

    Special equipment chassis BM consists of cab protection, protection of fuel tanks and gasoline separator, jacks, intercom, seat support leg, wings, and a bracket for a fire extinguisher. Cab guard protects the cab and it is in settlement of the action of the gas jet projectile when fired, and the protection of fuel tanks and fuel tanks and gasoline separator prevents gasoline separator from mechanical damage.

    When shooting on the ground fell two jacks located at the rear of the combat vehicle. Jacks needed for unloading springs rear axles and optimum stability when shooting. Firing of the combat vehicle can be performed both from the shelter using the remote coil (up to 80m from the war machine), and directly from the cockpit BM.

    Loading the combat vehicle produced manually using a special grip and tray. Two rooms calculation raised projectile gripper, and the third shell for supporting the bottom of the nozzle. Then shell laid on the tray and it shall be sent to the guide before the projectile will go beyond the rear stopper (see photo).

    for firing fighting machine BM-24 used a 240-mm high-explosive shells turbojet M-24F and M-24FUD extended range (see description), as well as MS-24 kitted poisonous substance. In 1962, were adopted by the turbojet MD-24F (see description) and MS-24UD, with extended firing range (16000m and 17500, respectively). Nosecone shell 3X1 MS-24 equips 19 kg of substance "P-35". Shell MS-24UD had a longer range, but contained less toxic substances (12 kg).

    fighting vehicle with the gun crew, charged with twelve shells, is able to make without refueling march up to 600 km and can open fire salvo after 1.5-2 min after the command "Go to battle." Of combat vehicle can fire at a high rate of fire: the first 12 rounds may be issued for 6-8 seconds, and every next 12 shells - in 3 - 4 min.

    Modernization

    Artillery unit modernized combat vehicle BM-24M (index 2B3) became mounted on the modified truck chassis ZIL-157.

    In particular, changes were made to mount and secure the guides on the farm of the artillery. Fixing each guide was ensured by 4 bolts with lock washers (using electric welding clamp was canceled).

    In pursuit

    tables was installed instead polushesternya worm worm gear.

    The design

    subframe front transverse channel has been extended for the purpose of securing to him sheets adjustable left and right fuel tanks.

    The design of rotating mechanism instead of steel worm worm was introduced with a bronze jacket. The number of turns of the screw has been reduced from 15 to 7.

    In

    special equipment chassis were introduced some structural changes, since a truck chassis ZIL-157 differed from the chassis ZIL-151. The front part of the seat (on four numbers calculation) was performed folding.

    Fighting vehicle BM-24M (index 2B3) was completed panorama PG-1 gun-collimator K-1.

    PERFORMANCE

    Sizing

    Caliber, mm

    240,6

    Number

    guide

    12

    rail length, mm

    2000

    highest elevation, hail

    50

    lowest elevation, hail

    0

    traverse angles, deg:
    - At elevations from 0 to +10 ° (in the sectors of horizontal fire from ± 45 ° to ± 70 °)
    - At elevation angles of +10 to +50 °


    25
    ± 70

    eyepiece height panorama mm

    1475

    Overall data

    Length, stowed, mm

    6930

    Stowed Width, mm

    2320

    Width in firing position, mm

    2650

    Height Stowed mm

    2800

    height at maximum angle of elevation, mm

    3510

    Weights

    Weight

    charged fighting machine with the calculation 8 people, kg

    8910

    Weight fighting machine in the stowed position, without calculation, kg

    7110

    weight combat vehicle with shells, kg

    8910

    Weight artillery unit, kg

    1420

    Weight

    guide kg

    30,5

    farm Weight, kg

    205

    Weight

    swing frame, kg

    280

    weight tables with worm gear, kg

    200

    Weight lifting mechanism

    kg

    60

    weight counterbalancing mechanism kg

    40

    Operating Data

    minimum time needed to produce a full volley with

    6-8

    time from traveling to combat without loading, min

    1,5-2

    time required for loading the combat vehicle, min

    3-4

    force on the handle drive hoist kg

    Prior

    10

    force on the handwheel drive rotating mechanism, kg

    Prior

    8

    Change elevation in one revolution of the flywheel drive hoist

    0 ° 40 '

    Changing

    angle per one rotation of the rotary drive mechanism handwheel

    1 ° 40 '

    Maximum speed

    charged combat vehicle on a paved road, km / h

    60

    greatest depth of the ford with a hard bottom, surmounted charged fighting machine, mm

    750

    greatest gradeability charged fighting machine with dry and hard ground, hail

    28





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