RU2328694C2 - Heavy armoured personnel carrier mounted on tank base chassis - Google Patents

Abstract

FIELD: armoured fighting vehicles.

SUBSTANCE: aarmoured bulkhead is extended until it intersects the plane of a top nose sheet and is connected to the later by means of a front inclined wall, provided with a built-in dynamic protection with resistance to armour-piercing projectiles of up to 40 mm calibre at the level of resistance of the hull broads. The angle of the inclined wall is 30°÷55°. The inner height of the boards with the bulkhead is 1.26÷1.37 of the inner height of the base chassis hull. A commander's seat and a driver mechanic's seat are mounted in the front portion of the living compartment instead of nose fuel reservoirs of the base chassis whereby the machine's centre line is shifted to the boards. The fuel supply is compensated by placing additional fuel reservoirs into armoured compartments formed in the sidewall framework of the extended portion of the bulkhead.

EFFECT: invention allows accommodating in the living compartment a landing party corresponding to one motorised rifle section with standard armament.

5 cl, 6 dwg

Description

The invention relates to objects of armored vehicles and can be used to create combat vehicles, including heavy armored personnel carriers, made on the basic chassis of modern tanks, for example T-72, T-80, T-90 and their modifications.

The Israeli Ahkharit heavy armored vehicle for transporting troops is known (see Jane's Defense Systems Modernization, 1995, vol.8, No. 9, p.8; or Military Technology, 1996, vol.XX, issue, 8, p.58-61), made on the base chassis of the T-55 tank with a dismantled tower and converted combat and engine-transmission compartments (MTO) of the tank. In the upper part of the hull, a superstructure is made, which is equipped with crew and landing hatches, a set of weapons and additional protection. A hinged door is installed in the aft sheet, and a hinge is installed in the MTO roof for the convenience of landing entry and exit. The machine is equipped with additional protection in the form of blocks of dynamic protection. TOGA Armor and Chobham Passive Armor.

The disadvantages of the known machine are predetermined by the use of the chassis of the T-55 tank, whose tactical and technical characteristics are significantly inferior to the tanks of the modern generation both in terms of protection and maneuverability.

A known flamethrower machine (see RF patent No. 2172921, F41H 7/02, 2000), adopted as a prototype, containing the body of the base chassis of a modern tank, for example T-72, with its MTO, undercarriage, control compartment with a mechanic's hatch driver. Instead of the roof, the hull is equipped with an armored low-profile box-shaped superstructure covering the sides of the hull and forming an inhabited compartment together with the control compartment. In the rear wall of the superstructure are made flamethrower hatches. And the side walls are made in the form of an armored frame and extended to the rear of the hull with the protection of the aforementioned hatches. On the roof of the superstructure there is a tank rotating turret of the commander with a hatch and anti-aircraft machine-gun installation.

Known machine has the following disadvantages:

- the small internal volume of the inhabited compartment does not allow landing in it in an amount corresponding to one motorized rifle compartment (11 people) with full-time weapons, since it does not seem possible to move the driver’s workplace forward due to the small angle of inclination of the upper nose sheet, and also due to the placement of the commander in the superstructure;

- the presence in the habitable compartment of the standard bow fuel tanks of the base chassis, which not only occupy a significant amount, but also increase the fire and explosion hazard.

The present invention solves the problem of creating a heavy armored personnel carrier with enhanced operational and combat characteristics.

The technical result achieved in solving the problem is to increase the number of transported troops to 11-13 people by increasing the volume of the inhabited compartment and to increase fire and explosion safety.

The problem is solved in that the armored superstructure is advanced forward until it intersects with the plane of the upper nasal sheet and is connected with it by a forward inclined wall equipped with built-in dynamic protection to ensure the resistance of this wall from armor-piercing shells of caliber up to 40 mm at the level of resistance of the hull sides, while instead of the nasal fuel tanks of the base chassis, the front of the inhabited compartment is equipped with the commander and driver’s seats with an offset from the longitudinal axis of the machine to the sides, and compensation fuel pass is provided by placing additional fuel tanks in armored compartments formed in the chassis sidewall extended forward part of the superstructure.

The front inclined wall of the armored superstructure is made in continuation of the upper bow sheet, and the angle of their inclination from the horizontal plane is selected from the range of 30 ° ÷ 55 °, while the internal height of the sides with the superstructure is 1.26 ÷ 1.37 of the internal height of the base chassis.

In the inhabited compartment, 11 airborne seats can be installed, placed along the sides transversely to the movement.

In the inhabited compartment can be installed 13 seats of paratroopers, placed in rows in the direction of travel.

In the aft part of the superstructure, on the back inclined wall, landing hatches are installed, the covers of which are made with an isosceles triangle profile with an angle between the forming surfaces equal to 125 ÷ 130 °, fixed with the possibility of rotation on the torsion shafts up towards the nose of the machine, locking in the open position and use as a frontal armor protection of the landing at the entrance-exit, while on the roof of the superstructure in front of the hatches, protective strips of gaps between the torsion shafts and the roof are welded.

The analysis of the main distinguishing features showed that:

- advancement of the armored superstructure forward to the intersection with the plane of the upper nose sheet, communication with it by the front inclined wall, the implementation of the front inclined wall of the armored superstructure in the continuation of the upper nose sheet, an increase in the angle of their inclination from the horizontal plane to 30 ° ÷ 55 ° compared to the base chassis (22 °) while ensuring the required level of protection, it allowed to increase the useful volume of the machine (inhabited compartment) and to push the driver’s and commander’s seats forward, freeing up space for landing but;

- the indicated increase in the angle of inclination from the horizontal plane of the upper nose sheet and the front inclined wall of the armored superstructure, although it reduces their armor resistance, however, the use of built-in dynamic protection ensures their resistance to armor-piercing shells of caliber up to 40 mm at the level of resistance of the sides of the tank’s base chassis, which guarantees protection an armored personnel carrier from being struck by fire from small-caliber cannons of NATO standard, for example, the Swedish company Bofors, installed on various military vehicles;

- the placement of the entire fuel supply in the armored compartments formed in the frame of the side walls of the superstructure not only increased fire and explosion safety, but also made it possible to use the space that was freed from the bow tanks of the base chassis to accommodate the commander and driver’s seats with a shift from the longitudinal axis of the machine to the sides;

- installation along the sides of the inhabited compartment transversely to the movement of 11 seats of the paratroopers provided the possibility of transporting a motorized rifle compartment with standard weapons;

- the installation in the inhabited compartment in rows in the direction of travel of 13 seats of paratroopers provided an opportunity, in addition to the motorized rifle compartment, to transport, for example, aviation and artillery gunner-spotters;

- installation in the aft part of the superstructure of the airborne hatches, made with the possibility of turning on the torsion shafts up towards the nose of the machine, with the possibility of locking in the open position, allowed to use them to protect the landing from fire from small arms and fragments at the entrance-exit;

- the implementation of the caps of the landing manhole with a profile in the form of an isosceles triangle with an angle between the forming surfaces equal to 125 ° ÷ 130 °, made it possible to use the internal volume of the covers to accommodate the heads of the last row of paratroopers.

The invention is illustrated by drawings, which depict:

- figure 1 is a side view of a heavy armored personnel carrier, the hatches of the paratroopers in the open position;

- figure 2 is a top view of a heavy armored personnel carrier;

- figure 3 is a top view of a heavy armored personnel carrier with the roof removed and 11th paratroopers;

- figure 4 is a top view of a heavy armored personnel carrier with the roof removed and the 13th paratroopers;

- figure 5 is a rear view of a heavy armored personnel carrier with open landing hatches;

- figure 6 is a side view of the open landing hatch.

The heavy armored personnel carrier on the base chassis of the tank, for example T-72, T-80 or T-90 (see Fig. 1, 2), contains an armored hull 1 with a motor-transmission compartment 2 and a running gear 3. The hull 1 instead of the roof is equipped with a low profile , box-shaped, armored superstructure 4, which is placed along its sides and consists of a front inclined wall connected to the upper bow sheet 5, aft inclined wall 6 and side walls 7, 8. The armored superstructure 4 is advanced forward until it intersects with the plane of the upper bow sheet 5. Side wall length 7, 8 corresponds to the length of the frontal upper sheet 5 and the rear plate 9. The internal height of the hull sides with a superstructure 4 is 1.26 ÷ 1.37 the internal height of the base unit housing. The walls of the superstructure 4 together with the housing 1 form a habitable compartment, equipped with seats for accommodating the crew of the car and the landing. To increase the internal volume of the inhabited compartment, the upper nasal sheet 5 is installed at an angle of 30 ° ÷ 55 °, and the front inclined wall is made in its continuation. Instead of the standard front fuel tanks of the base chassis in the front of the inhabited compartment, the driver’s seat 10 is offset forward and to the left side from its position on the base chassis, and the commander’s seat 11 is offset from the longitudinal axis of the vehicle to the starboard side. Seats of paratroopers 12 in the inhabited compartment can be placed in two versions:

- along the sides of the habitable compartment (back to board) transversely to the movement - 11 seats 12 (see figure 3);

- rows in the direction of travel - 13 seats 12 (see figure 4).

On the roof 13 of the superstructure 4 are installed: a driver’s hatch 14, a rotating turret commander’s turret 15 with an anti-aircraft machine gun 16 and additional landing hatches 17. In the aft inclined wall 6, landing hatches 18 are installed, the covers of which are made with an isosceles triangle profile with an angle between the generatrix surfaces equal to 125 ÷ 130 °, mounted with the possibility of a turn on the torsion shafts 19 up towards the nose of the machine, made with the possibility of locking in the open position and use as frontally armor protection landing at an input-output (see Fig. 5). At the same time, on the roof of the superstructure 4 in front of the landing hatches 18, protective strips 20 are welded to ensure that the gaps between the torsion shafts 19 and the roof overlap (see Fig. 6).

The upper inclined bow sheet 5 with the front inclined wall is provided with an integrated dynamic protection 21, and the sides of the housing 1 are protected by on-board removable screens 22 of the dynamic protection.

The armored superstructure 4 is provided with additional protection: each side wall 7, 8 is made in the form of an armored frame with spaced armor with the formation of internal cavities in the form of armored compartments 23 and is equipped with hinged dynamic protection in the form of blocks 24. At the same time, the front projection is resistant from small-caliber armor-piercing shells caliber up to 40 mm at the level of resistance of the hull sides. The fuel system of the engine includes tanks 25 and 26, located in the armored compartments 23, while the compensation of the fuel supply placed in the nose fuel tanks of the base chassis is ensured by placing additional fuel tanks 26 in the armored compartments 23 formed in the frame of the side walls 7, 8 extended forward part of the superstructure 4.

When operating a heavy armored personnel carrier, the above structural elements operate as follows.

The frontal projection of the inhabited compartment is protected by the upper nasal sheet 5, passing into the front sheet of the superstructure 4 with integrated dynamic protection 21.

The increase in the level of protection of the side projections of the superstructure 4 is provided by the mounted dynamic protection units 24 mounted on the side walls 7, 8.

The lower part of the side projections of the machine is protected by removable side screens 22 of dynamic protection.

The driver, commander and paratroopers are comfortably placed in the inhabited compartment, while the commander using the turret 15 can conduct circular surveillance of the terrain and conduct targeted fire from the anti-aircraft machine gun 16.

In the absence of fire contact with the enemy, paratroopers can enter and exit through hatches 17, 18.

When landing in a combat situation, the paratroopers leave the inhabited compartment through hatches 18, which are raised up towards the nose of the machine and locked in the open position, while performing frontal armor protection at the entrance-exit.

The fuel in the tanks 25, 26 is protected from fire and explosion by the armored compartments 23. The protective bars 20 prevent bullets and fragments from falling into the gap between the roof of the superstructure 4 and the torsion shafts 19 with the hatches 18 open.

The level of armor resistance of the claimed heavy armored personnel carrier significantly exceeds the resistance of the known light armored personnel carriers and infantry fighting vehicles.

Thus, the present invention solved the problem of creating a heavy armored personnel carrier with enhanced operational and combat characteristics.

Claims (5)

1. A heavy armored personnel carrier on the base chassis of the tank, containing an armored hull with integrated dynamic protection, a motor-transmission compartment, an inhabited compartment formed by the sides of the hull and a low-profile box-shaped armored superstructure, placed along the sides, the side walls of which are made in the form of an armored frame with spaced armor with the formation of internal cavities in the form of armored compartments used to install fuel tanks, crew seats of the car and the landing, installed in the habitable division, characterized in that the armored superstructure is advanced forward until it intersects with the plane of the upper nasal sheet and is connected with it by a front inclined wall provided with integrated dynamic protection to ensure the resistance of the wall from armor-piercing shells of caliber up to 40 mm at the level of resistance of the hull sides, while the seat the commander and the driver are installed in front of the habitable compartment with an offset from the longitudinal axis of the machine to the sides, and to compensate for the fuel supply in the armored compartments formed in the to the side walls of the forward part of the superstructure, additional fuel tanks are placed. 2. The heavy armored personnel carrier according to claim 1, characterized in that the front inclined wall of the armored superstructure is made in continuation of the upper nose sheet, and the angle of their inclination from the horizontal plane is selected from the range of 30 ÷ 55 °, while the internal height of the sides with the superstructure is 1, 26 ÷ 1.37 of the internal height of the base chassis. 3. The heavy armored personnel carrier according to claim 1, characterized in that in the inhabited compartment there are 11 paratrooper seats placed along the sides transversely to the movement. 4. The heavy armored personnel carrier according to claim 1, characterized in that in the inhabited compartment there are 13 paratrooper seats arranged in rows in the direction of travel. 5. The heavy armored personnel carrier according to claim 1, characterized in that in the aft part of the superstructure on the rear inclined wall are mounted landing hatches, the covers of which are made with a profile in the form of an isosceles triangle with an angle between the forming surfaces of 125-130 °, fixed with the possibility of a turn on torsion shafts up towards the nose of the car and locking in the open position, with the possibility of using as an armored frontal defense landing at the entrance and exit, while on the roof of the superstructure in front of the hatches are welded e planks with overlapping gaps between the torsion shafts and the roof.

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