Device for experimental development of separating jet projectiles

FIELD: military equipment, in particular, experimental devices for development of the separation process of jet projectiles.

SUBSTANCE: the device has a mock-up of the nose cone with the separation compartment and a mock-up of the rocket section which are positioned on a tray-type rigid base. The base is made in the form of inner and outer channel-type support guides symmetrically fastened to one another by the bases and engageable by side shelves with the surfaces of the mock-ups of the nose cone and rocket section of the projectile in the vertical and horizontal directions. The device is provided with brake blocks positioned on the base before the mock-ups of the separating parts at distances corresponding to the acceleration paths of the separating parts in the trajectory. The brake blocks are made in the form of cylinders, whose end face surfaces are provided with axisymmetric inner and outer cone-shaped fixing surfaces. The mass of the brake blocks is selected from the condition of provision of axial g-loads not exceeding the allowable values, and the quantity of the brake blocks is selected from a definite relation.

EFFECT: reduced labor content of the process of separation of jet projectiles.

3 dwg

 

The invention relates to military technology, namely the experimental devices failover process separation rockets, mainly volley fire.

For analysis of in-vessel process, assess the validity of the results of theoretical research and test rockets in the separation process uses a variety of approaches to conducting experimental development PC. In this case, one of the important tasks of testing is to ensure the safety and reusability of the test object (often warhead payload), which allows to reduce the number of expensive tests and thus reduce the time and cost to develop new weapons.

Based on the book Avernish "Designing test stands for testing and control of onboard aircraft systems" (Moscow, Mashinostroyeniye, 1983, str) known design stand with playback shock pulse during acceleration. The experimental device is composed of a test object placed on the cart braking device. It is mounted on the guides and provided with a piston rod with a piston, which accelerated with the required overload due to selection of sample powder, triggered the working compartment of the accelerating device (gun).

This poster design of the device allows for use of the energy of the powder charge to reproduce shock pulse during acceleration; through the use of a braking device in the form of a compressible spring to provide braking of the truck with the test object. However, the spring brake device difficult to use for damping of power impacts arising in the process of dividing mass of about 200 kg at speeds of 30-40 m/s Therefore, the stand of safety reasons can only be built in the calculation of the relatively small capacity of the shock pulse, sufficient for testing small items.

Thus, the task specified experimental bench device is playing and the damping of the shock pulse small intensity.

Common features of known technical solutions proposed by the authors design a poster setup is the presence of a compartment with a powder charge and a rigid base with rails hosting the test object.

In patent No. 2235302 (application No. 2002122582 from 20.08.2002,, IPC G 01 M 7/08, G 01 N 3/313) known to stand for testing products on impact, accelerating and braking device of the booth.

Stand for testing products on shock contains the accelerating device is in the form of a barrel, charging the camera with a powder charge and an initiator, a carriage for mounting the test items connected by eyelets with the guides, and brake device. An accelerating device is mounted on the barrel of the artillery through the support frame with the clamp, and the guides are made of flexible steel wire rope, passed through the slots in the support and stretched along the gun.

An accelerating device for testing products for shock includes charging the camera with a powder charge, a bottom cover and a triggering device. The initiating device made in the form of a premix chamber, in which there is an additional powder charge and the electric igniter installed perpendicular to the axis of the barrel and communicating radial channel with a circular groove with a corner jumper with side loading chamber.

Braking device for testing products for shock-contains damper device and the energy absorber. The damper device is mounted behind the brake section and made in the form mounted on each guide sleeves connected by an elastic connection. Moreover, the guides passed through the blocks that are installed on the base end of the brake section and the energy absorber is made in the form of a tape of elastic material, the inertial mass is which are distributed along the length of the brake plot by law, providing the required acceleration of the carriage with the product when braking.

The design of the stand adopted by the authors for the prototype, allows to carry out tests on shock due to the presence of the accelerating device with a powder charge of providing a given level of current load, and a braking device with a damping device, providing the required acceleration of the carriage with the product when braking its on rails.

However, the practical use of such devices and, first of all, for effective braking divided parts of the projectile (RF and MS)receiving power pulses in the separation process, is problematic due to the complexity of the operation and the necessity of placing it in two opposite directions (RF and MS).

Thus, the objective of this experimental device is the test products on the regulated impact generated due to the charging of the chamber with the powder charge.

Common symptoms are known percussion stand proposed by the authors design an experimental device for testing multiple PC in laboratory conditions is the availability of compartments (chambers) with a powder charge and a braking device with the guides.

Unlike the prototype in pre the proposed design of the device for testing multiple PC on bench:

- the base is made in the form of internal and external reference guides channel shape, symmetrically bonded bases and persistently interacting side shelves with surfaces layouts brain and missile parts of the projectile in the vertical and horizontal directions;

the device is further provided with brake blocks, placed on the base before layouts separable parts at distances corresponding to the routes of dispersal of the shared parts of the projectile on a trajectory;

the brake blocks are made in the form of a cylinder, the end surface has a rotationally symmetric inner and outer clamping surfaces of conical form;

- the mass of the brake units is selected to provide axial overload, do not exceed the permissible values of the congestion on the shared elements of the projectile during operation, and the number of brake units is determined by the ratio

where

mip, mT.B.weight of separable parts and brake unit, respectively;

VipVto- speed shared parts in the process of separation and brake blocks at the end of the braking process;

i - the index of the shared parts.

The task of the invention is to reduce speeds on the to achieve layouts brain and missile parts during movement along the guide, reducing the impact of congestion on the tested models of MS and RF at the time of collision with the obstacle (trap) and the reduction of the full path of the shared elements of the split point up to full braking.

This technical result in the implementation of the invention is achieved by the fact that in the construction of the known device that contains the layout of the head part with the compartment separation and layout rocket parts placed on the rigid base tray-type, the base is made in the form of internal and external reference guides channel shape, symmetrically bonded bases and persistently interacting side shelves with surfaces layouts brain and missile parts of the projectile in the vertical and horizontal directions.

The device is further provided with brake blocks, placed on the base before layouts separable parts at distances corresponding to the routes of dispersal of the shared parts of the projectile on its trajectory. In this case, the brake blocks are made in the form of a cylinder, the end surface has a rotationally symmetric inner and outer clamping surfaces of conical shape (αto≈22°). The mass of the brake units is selected to provide axial overload, do not exceed the permissible values of the congestion on the shared elements of rape is in the process of operation. And the number of brake units is determined by the ratio

where

mip, mT.B.weight of separable parts and brake unit, respectively;

VipVto- speed shared parts in the process of separation and brake blocks at the end of the braking process;

i - the index of the shared parts.

A new set of structural nodes and elements, as well as the kinematic relations between them allows you to get a new positive effect. For example, the execution of the base device in the form of internal and external reference guides channel shape, symmetrically bonded bases and persistently interacting side shelves with surfaces layouts brain and missile parts of the projectile in the vertical and horizontal directions, provides by increasing the number of lines of contact more smooth shockless movement layouts on the tray guide precluding the emission of RF layouts and GC in the separation process.

The supply device of the brake blocks made in the form of cylinders, the end surface has a rotationally symmetric inner and outer clamping surfaces of conical shape, owing to a collision between the moving and stationary elements to gradually extinguish / min net is motion models in the process of their movement along the guide and thereby reduce the shock load at the moment of collision with the obstacle. In addition, by reducing the full path of the layouts from the division point to full braking, it is possible to use the device in conditions indoors.

The choice of mass of the brake units of the conditions for ensuring axial overload, do not exceed the permissible values of the congestion on the shared elements of the projectile during operation, ensures the safety and efficiency of the experimental device in the testing conditions. The number of brake units, determined from the ratio

appointed from the condition Vto=0 or Vto=Vass. In the first case, there is complete inhibition of separable parts PC based, and the second to the specified or allowable mode vanishing MS and RF from the base.

The essence of the invention is illustrated by drawings, where figure 1 shows a General view of the experimental device figure 2 - layout of sensors measuring the speed, and figure 3 is a longitudinal section of compartment separation.

Device for testing multiple PC on bench contains the layout GC 4-Bay division 5 and layout rocket part 6, on the basis of tray-type 1, characterized in that its base is made in the form of inner 7 and 8 external reference direction is managing channel form, symmetrically bonded bases and persistently interacting side shelves with surfaces layouts brain and missile parts of the projectile in the vertical and horizontal directions.

The device is further provided with brake blocks 2 placed on the base before layouts separable parts at distances corresponding to the routes of dispersal of the shared parts of the projectile (LMSand LRFon the path.

The mass of the brake units is selected to provide axial overload, do not exceed the permissible values of the congestion on the shared elements of the projectile during operation, and the number of brake units is prescribed in the conditions of complete or partial inhibition of separable parts (Vto=0 or Vr=Vass).

The experimental arrangement is as follows.

To enable device is initiating pulse to the charge separation 11. The products of combustion of the charge fills the working cavity of the compartment division 5, and when the value of the pressure corresponding to the pressure force, is the destruction of the node crossing 12. Under the action of internal pressure (detected by sensor type LH-412) shared elements (layouts MS and RF - 4,6) begin to accelerate, and when the magnitude of the total displacement is equal to the path opening (Lsun =LRF+LMS), there is a complete separation of layout and Autonomous movement along the guide 1 in opposite directions.

In the process of movement of layouts for their external surface persistently interact with side shelves channels 9, 10 and prevent the loss of the shared parts of the guides. And move the layout in the horizontal direction (right and left) are prevented due to the persistent interaction with the lateral guides (shelves) external channel 10, and a possible move in the vertical direction is prevented, first, due to the persistent interaction between the two side rails of the inner channel 9 (down) and, secondly, due to the mass forces of layouts, excluding emissions from their routing guides up. Thus, due to the linear interaction models with four side rails of the base is achieved steady movement in the direction of the brake blocks. At the same time when crossing layouts zones dimensions (Lu), on the borders of which are emitters of light with a photodetector 3, is provided by measuring the velocity of separation of layouts MS and RF with the necessary degree of precision.

When the mock WARHEAD and the first RF brake blocks 2 is the collision process involving interaction of internal and external fix the regulating surfaces of the conical shape and the loss of kinetic energy layouts. The mass of the brake blocks must be chosen from the condition of providing axial overloads that do not exceed permissible overload acting on the shared elements of the projectile during operation. This condition in a simplified form can be represented in the formwhere

niSS- permissible loads on the shared part of the projectile;

miUSK- the mass of the accelerated parts;

migr.- the mass of the brake unit;

ϕCR- the value of the loss coefficient of the kinetic energy at impact separable parts of the projectile and brake blocks.

It should be noted that to reduce congestion at the moment of collision layouts brake units can be equipped with dampers that use, in the simplest case, a tight elastic rubber, mounted on the axial ends of the brake blocks. This, naturally, reduces the present value of the loss factor ϕCR.

Further movement of layouts with attached cargo similar to that described above, which, ultimately, leads to partial or complete inhibition of separable parts on the ground. When the braking process is characterized by the choice of the value of the final speed braking (Vto=0 or Vto=Vz is d ). Thus, due to the gradual braking is ensured the safety of layouts that can be explored and re-used. In addition, due to the reduction of the braking distance of the partial layout allows the use of experimental devices in a closed space.

Thus, the experimental device in accordance with the proposed invention allows to expand possibilities of its practical use and reduce the time and cost to the development process of separation rockets on bench.

The invention can be used for experimental testing of projectiles with detachable warheads and, primarily, for reactive systems of volley fire.

Specified positive effect is confirmed by the results of the testing of several prototypes is divided rockets, carried out in laboratory conditions on the experimental device, taking into consideration the distinctive features set forth in the present invention.

Device for testing multiple rockets containing the layout of the head part with the compartment separation and layout rocket parts placed on the rigid base tray-type, characterized in that the bases of the tion made in the form of internal and external reference guides channel form, symmetrically bonded bases and persistently interacting side shelves with surfaces layouts brain and missile parts of the projectile in the vertical and horizontal directions, the device is further provided with brake blocks, placed on the base before layouts separable parts at distances corresponding to the routes of dispersal of the shared parts of the projectile on a trajectory, in this case, the brake blocks are made in the form of a cylinder, the end surface has a rotationally symmetric inner and outer clamping surfaces of conical shape, the mass of the brake units is selected to provide axial overload, do not exceed the permissible values of the congestion on the shared elements of the projectile during operation, and the number of brake units is determined by the ratio

where

mip, mT.B.weight of separable parts and brake unit, respectively;

VipVto- speed shared parts in the process of separation and brake blocks at the end of the braking process;

i - the index of the shared parts.



 

Same patents:

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