DE19832495C1 - Hydrodynamic damper for weapon barrel e.g. for shell launcher - Google Patents

Abstract

The hydrodynamic damper uses a magnetorheological fluid as the damping medium, with the magnetic field for controlling its viscosity provided via electrodes or electromagnets (4) coupled to a voltage or current control device (5). The required viscosity is calculated via a firing processor (6) in dependence on a number of control parameters, relating to the shell, the firing charge and the magnetorheological fluid and supplied to the control device.

Description

The invention relates to a hydrodynamic tubular weapon damper Claim 1 or 2.

It is known that the reaction to launching projectiles is the same oppose forces. The forces are introduced into the launcher when it is launched and have a negative impact on the accuracy of the projectile. Despite the others still In general, acting forces become only one of the launching forces in tubular weapons caused backward acceleration of the pipe assumed.

In order to avoid damage to the launcher, the kinetic energy of the tube is increased the return path is consumed by a hydraulic pipe brake.

A weapon return brake is known from DE 38 24 153 A1, in which the rear running balance of the accelerated weapon parts is converted into flow work. Additional Lich this device is able to provide a differentiated effectiveness of the hydraulic Damping cylinder by changing the effective throttle cross-section in front and To reach the gun barrel return.

JP 08014796 A is able to implement a further weapon return brake are taken from, depending on the weapon return path and the hydraulic Resistance of the damping medium, under magnetic influence, the viscosity of the Damping medium is determined so that there is an expected weapon return path.

Common disadvantage of all known designs of hydrodynamic tube weapons damper, is the inclusion of parameters in their Power control that significantly determines the shooting precision. In the state of the Technology is therefore only known solutions that only dampen the effect Design the route and controllable depending on the pipe running direction.

The object of the invention is to present a hydrodynamic tubular weapon damper, its effectiveness with less construction effort in wide areas by any selectable shooting parameters can be precisely controlled.

This task is solved by a hydrodynamic barrel weapon damper with the in the claims 1 and 2 specified features.

In the simplest way it is now possible to use any Pa that increases accuracy parameters in the control of the momentary damper effect.

Subclaims 3 to 4 further develop the subject matter of the invention. So he strikes Claim 3 before, the viscosity control according to the invention not over the pipe run to design continuously.  

With this measure, the internal ballistic influence caused by the weapon on the Shooting accuracy can be reduced. It is Z. B. an initially quasi free pipe return customizable.

Claim 4 refers to the possibility of determining the control signals the viscosity of the damping fluid from a specialized discrete data calculator to generate one.

An embodiment is shown in a figure and is described in more detail below described.

Instead of the hydraulic barrel weapon damper previously used, one is now closed use with an electrorheological or magnetorheological fluid (ERF / MRF) is filled. The viscosity of this fluid can be determined in an electrical / magnetic field over a wide range continuously in the millisecond range to be changed.

The one to be used with the state of the art DE 38 24 153 A1 essentially Identical tubular weapon damper, is to influence the fluid by appropriate Electrodes or magnets added.

The damping cylinder 1 equipped with these features connects the gun barrel 2 to the mount 3 . The viscosity of the ERF / MRF is determined via the electrodes or electromagnets 4 . The electrodes or electromagnets 4 are controlled by a corresponding control device 5 . The control unit 5 receives its data from the fire control computer 6 or directly from sensors connected to it

In the example shown, the fire control computer 6 detects the type of grenade, the pipe elevation and the temperature of the cartridge powder and in the ERF / MRF. From this data, he determines the damping behavior to be set and determines a voltage or a current to the electrodes / electromagnets 4 via the control device 5 , so that the required viscosity in the ERF / MRF has the required value for the current shot.

The pipe return is detected by sensors and reported back to the fire control computer 6 or the control unit 5 . Thus, the current or the damper characteristics for the next shot can be changed at the moment if necessary so that a permanent, actual setpoint difference cannot arise.

In addition to the simple damper effect, it is possible with the invention to make the damper characteristic variable over the return path. In order not to let the influence of the interior ballistics take effect on the shot accuracy, the fluid viscosity is readjusted depending on the return path of the gun barrel 2 .

The maximum damping effect can thus be placed in the return area of the gun barrel 2 , which is still available after the projectile exit.

For the rest, it goes without saying that the damping effect should always be chosen so that independent depending on the propellant charge used, always the total available standing return path is used.

Known barrel weapon dampers are generally able to be effective with a different damping value even when the cannon barrel 2 is advanced. So far, this has been achieved by a complicated, mostly mechanically effected change in throttle cross section in the damping cylinder 1 or in the damping cylinder bypass. According to the invention, it is now possible to achieve this only by sensing the pipe running direction by means of a signal generated by the fire control computer 6 to the control unit 5 .

In addition to the economical solution of having the control data for influencing the fluid viscosity determined by the fire control computer 6 , which is usually present, there is the possibility of using a specialized data computer for this.

Claims (4)

1.Hydodynamic tubular weapon damper, the damping medium of which is represented by a magnetorheological fluid (MRF), the viscosity of which can be varied, the magnetic field required for viscosity control being determined by at least one of the parameters of the type of garnet, propellant charge, pipe elevation, pipe running direction, temperature of the magnetorheological fluid and temperature of the Cartridge powder is determined and the power or distant signal necessary for viscosity determination is calculated by the fire control computer ( 6 ). 2.Hydodynamic gun weapon damper, the damping medium of which is represented by an electoral logic fluid (ERF), the viscosity of which can be changed, the electrical field required for viscosity control being determined by at least one of the parameters of the type of garnet, propellant charge, pipe elevation, pipe running direction, temperature of the electrorheological fluid and temperature of the Cartridge powder is determined and the power or distant signal necessary for viscosity determination is calculated by the fire control computer ( 6 ). 3. Hydraulic gun weapon damper according to claim 1 or 2, characterized, that he viscosity control over the pipe run in a non-continuous manner follows. 4. Hydraulic gun weapon damper according to one of claims 1 to 3, characterized in that depending on selected parameters at least one electrical power or distant signal to control the electrodes or electromagnets ( 4 ) necessary for viscosity determination by a discrete data computer optimized for these purposes, it is calculated .