RU2735634C2 - Projectile for aircraft damage - Google Patents

Abstract

FIELD: military equipment; space equipment.

SUBSTANCE: invention is intended for use in combat space equipment for aircraft damage. Missile consists of body, damaging element and pyro charge for ejection of damaging element. Said body is coupled with body by multiple hinged parallelogram and additional multiple hinged parallelogram. Additional hinged parallelogram is installed perpendicular to main multiple hinged parallelogram. Damaging element is connected to an additional multiple hinged parallelogram. Target sensor is in form of a pin. Piezoelectric element is secured at its end. It is configured to generate electric current at impact for the purpose of pyro charge explosion initiation.

EFFECT: increase of destructive ability.

3 cl, 3 dwg

Description

The proposed invention relates to military equipment. The main area of use is the destruction of space objects. Can be used to destroy aircraft.

Known manipulator, designed to ensure fast action and large reach of the working body with a slight displacement of the output link of the displacement drive, containing a multiple articulated parallelogram (AS USSR No. 963847 M. CL V24B 9/00).

However, in this manipulator the multiple articulated parallelogram is not used as a powerful energetic means capable of increasing the speed and energy parameters of the input pulse. This quality side of the multiple articulated parallelogram has not been used in military technology.

As a prototype, a device for ramming an aircraft is taken, containing a steel thin-walled body in which a cat with a cable is placed, a pyro-charge for throwing out the cat. Steel cat with teeth opening from the action of a spring (USSR inventor's certificate No. 65104 Mcl. F42B 13/26).

This device is not capable of hitting space objects, which, as a rule, have a strong multi-layer shell. The low lethality of the known solution is due, firstly, to insufficient speed and energy indicators of the cat at the moment of hitting the target, since a small pyrocharge is used to eject the cat, and secondly, the moment of ejection of the cat is determined visually, which leads to both premature and delayed emissions. With premature emissions, kinetic energy is lost, and with delayed ones due to the ricochets of the projectile, the target is not hit at all.

The aim of the invention is to increase the lethality.

This goal is achieved by the fact that in a projectile for hitting aircraft, containing a body that damages the body, a pyro-charge for ejection of the damaging body, the damaging body is connected to the body by a multiple articulated parallelogram and equipped with a target achievement sensor, and the leading part of the multiple articulated parallelogram is connected to the piston installed in a multiple articulated parallelogram is connected to a piston installed in the housing chamber, in the working part of which a pyro-charge is placed to eject the damaging organ.

In addition, the projectile is equipped with an additional multiple articulated parallelogram, installed perpendicular to the main one.

Another novelty is the implementation of the target achievement sensor in the form of a pin, at the end of which a piezoelectric element is fixed, electrically connected to the pyro-charge for ejection of the striking organ.

Distinctive features from the prototype are essential, since each of them is necessary, and all together with the restrictive ones are sufficient to achieve the goal.

Thus, the placement of a pyrocharge in a chamber with a piston makes it possible to achieve greater acceleration forces of the damaging organ in comparison with the prototype, which increases the damaging ability. Indeed, in the prototype, the maximum pressure of the gases generated during the combustion of the pyrocharge is practically equal to the value at which the damaging organ moves from its place. With further combustion of the pyrocharge, the pressure on the bottom of the striking organ does not increase, but drops to zero, since after the latter leaves the body of the charge, the gases are dispersed in a vacuum.

Such a sign as the presence of a connection between the piston and the striking organ, which ensures their simultaneous movement, makes it possible to increase the time of action of the accelerating force on the striking organ and thereby increase its speed and lethality. In the prototype, the accelerating force acts on the striking organ for a very short time, while it is in the body of the fire charge. In the stated solution, the accelerating force acts all the time from the explosion of the pyro-charge to the destruction of the target.

The implementation of the connection between the piston to the damaging organ in the form of a multiple articulated parallelogram, in which the driven part contains n times more parallelograms than the leading, is also a factor that increases the damaging ability. This is due to the fact that with a rigid connection between the piston and the striking organ, the force created by the explosive gases gives all the elements of the system the same acceleration. In the claimed solution, this force is distributed between the piston and the striking organ in proportion to the ratio of the parallelograms in the driving and driven parts of the multiple articulated parallelogram. Since with the claimed form of communication, in comparison with the rigid one, the share of the damaging organ accounts for a large amount of force, the acceleration and, as a consequence, the damaging ability will be higher. Let the force created by the explosion of the pyrocharge be equal to 100 units; the masses of the piston and the projectile are the same and equal to a unit of mass; the number of parallelograms in the driven part of the multiple articulated parallelogram is 9, and in the leading one is 1. Then from the expression for the rigid connection:

- масса поршняWhere:

- piston mass

- масса поражающего органа

- mass of the damaging organ

We find:

For a connection in the form of a multiple articulated parallelogram, the following expression is valid:

- ускорение поршняWhere:

- piston acceleration

- ускорение поражающего органа

- acceleration of the damaging organ

Converting this expression, we get:

Thus, the use of a multiple articulated parallelogram with n = 9, in comparison with the rigid connection of the piston and the striking organ, makes it possible to almost double the acceleration of the latter.

Installation of an additional parallelogram perpendicular to the main one increases the rigidity of the connection between the piston and the damaging organ, which eliminates ricochets and increases the damaging ability.

Of the distinctive features of the prototype, it is known to use a multiple articulated parallelogram in the invention along.with. USSR No. 963847. However, in the inventive projectile and in the known solution, the multiple articulated parallelogram has a different purpose, while using its different properties. In the known solution, the multiple articulated parallelogram is designed to ensure speed and achieve a large reach of the working body with a small displacement of the driving link. In the claimed projectile, it is used to increase the lethality due to the property of increasing the speed parameters of the input pulse as many times as the number of parallelograms of the driven part is greater than the number of parallelograms of the leading part. The rest of the distinguishing features from the prototype were not found in the found analogs, therefore, the claimed projectile meets the criterion of "significant differences".

The essence of the invention is illustrated by drawings of various modifications of the projectile, where Fig. 1 shows a front view of the projectile before the fire charge is triggered; in fig. 2 is a front view of the projectile after the pyrocharge has been triggered; in fig. 3 is a side view of the projectile after the pyrocharge is triggered.

A projectile for hitting aircraft contains a steel body 1, connected by a multiple articulated parallelogram 2 and an additional multiple articulated parallelogram 3 with a striking organ 4. An additional multiple articulated parallelogram 3 is installed perpendicular to the main parallelogram 2, which makes the structure rigid. The main multiple hinged parallelogram consists of a driving part 5 and a driven part 6. The driving part 5 of the parallelogram 2 is installed in the cavity 7 of the housing 1, and the hinge between the driven and driving parts is fixed in the housing, and the opposite hinge of the driving part is connected by the rod 8 to the piston 9 located in the chamber 10, filled in the sleeve screwed in the body 11. In the working part of the chamber 10, a pyro-charge 12 is installed on the piston 8 to eject the working member 4. An additional multiple articulated parallelogram is fixed to the body by means of two hinges installed in the slot 13 of the projection 14. The slot 13 is made perpendicular to the cavity 7. A target achievement sensor is installed on the striking organ 4, made in the form of a pin 15, at the end of which a piezoelectric element 16 is fixed, which, through an amplifier, is electrically connected to the pyro-charge to eject the striking organ 4.

The claimed projectile is aimed at the target and, with the help of any propelling charger or chargeless device, rushes in its direction. In the future, tracking and targeting is carried out by an automatic homing system installed in the destructive organ. When the projectile reaches the target, a piezoelectric element first collides with it, which generates a current from the impact. This current is amplified by the amplifier and initiates the explosion of the pyrocharge. The gases formed during the explosion press on

piston 9 and move it along chamber 10 from the main multiple articulated parallelogram fixed in the hinge housing. The piston 9 through the rod 8 pulls the free hinge of the driving part 5, bringing it together. Simultaneously with the leading part, all the links of the driven part 6 are brought together. Since in the same time the damaging organ travels a distance n times (where n is the number of links in the driven part) greater than the piston 9, so the velocity of the damaging organ V2 will be n times greater than the piston speed V1.

V2 = n * V1

The high ejection rate of the damaging organ determines its high kinetic energy, and, consequently, high damaging ability.

Compared to the prototype, the claimed charge has a greater lethality. First, due to the use of a chamber with a piston, the connection of the piston with the striking organ by a multiple articulated parallelogram increases the velocity of the striking organ. Secondly, thanks to the target achievement sensor, the exact moment of the ejection of the damaging organ is provided. In the prototype, the moment of the ejection of the damaging organ is determined visually, and therefore the probability of untimely release of the damaging organ is high. With premature emissions, some of the kinetic energy is lost. With delayed emissions, the projectile first ricochets off the target, and then the striking organ is ejected past the target.

Compared with modern systems of warfare in space, for example, laser weapons, the claimed projectile is simple and cheap. Indeed, in order to carry out hostilities with a laser installation and its systems, it is necessary to detonate an atomic bomb in space. The powerful luminous flux from the explosion is absorbed by the laser installation, turning it into a laser beam. Implementation of such a method of warfare entails colossal costs.

The increase in the speed of the damaging organ in the claimed solution in comparison with the prototype is confirmed by the following simplified calculation.

The maximum pressure of explosive gases in the prototype is approximately equal to the forcing pressure (250-500 kg / cm2). In the declared solution, due to the closed space of the chamber with a piston, it is 6-10 times larger (see "Manual on shooting", Ministry of Defense, 1973, pp. 6-8). The time of action of explosive gases on the striking organ in the prototype is very short and is practically equal to the formation time. In the claimed solution, the time of action of explosive gases on the piston is about 10 times longer than the formation time and is equal to the period from the start of forcing to hitting the target.

Given the following conditions:

• the ratio of the number of parallelograms in the driven part to the number of parallelograms in the driving part is equal to n = 9;

• the mass of the piston is equal to the mass of the striking organ

• the mass of the multiple articulated parallelogram is neglected, since the mass of the piston is deliberately overestimated;

.• the cross-sectional areas of the piston and the striking organ are equal

...

We compose the equations:

where: P pr - the pressure of the explosive gases in the prototype, equal to approximately 400 kg / cm2

t CR - the time of action of the pressure of explosive gases on the striking organ in the prototype

P claim - pressure of explosive gases in the claimed solution, equal to approximately 2800 kg / cm2

t application - the time of action of explosive gases on the piston in the claimed solution is approximately 10 t pr

Substituting numerical values and expressing some quantities in terms of others in equations 1 and 2, we get:

Dividing equation 2 by equation 1 we get:

р

R

Converting, we get:

Thus, the speed of the damaging organ in the claimed solution is about 60 times the speed of the damaging organ in the prototype.

Claims (3)

1. A projectile for hitting aircraft, containing a body, a damaging organ, a pyro-charge for ejecting a damaging organ, characterized in that in order to increase the damaging ability, the damaging organ is connected to the body by a multiple articulated parallelogram and equipped with a target achievement sensor, and the leading part of the multiple articulated parallelogram with a piston installed in the housing chamber, in the working part of which a pyro-charge is placed to eject the damaging organ. 2. A projectile according to claim 1, characterized in that it is equipped with an additional multiple articulated parallelogram, mounted perpendicular to the main multiple articulated parallelogram. 3. The projectile according to PP. 1, 2, characterized in that the target achievement sensor is made in the form of a pin, at the end of which a piezoelectric element is fixed, electrically connected to the pyro-charge.

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