RU2212615C2 - Blast tubular booster - Google Patents

Abstract

FIELD: mechanical engineering, in particular, devices designed for high-speed throwing of solid bodies. SUBSTANCE: the blast tubular booster consists of a hollow metal sleeve with a insulated contact in the center of the bottom, propellant charge and electric primers connected by an electric circuit contacts of the propelled body and contact closing plates. The hollow sleeve, serving as a barrel, is the place of arrangement and boost of the propelled body. EFFECT: enhanced flying range of the propellant body and reduced mass of the propellant charge. 2 cl, 1 dwg

Description

 The invention relates to the field of mechanical engineering and is intended, in particular, for high-speed throwing of solids (resistant to large overloads), and can be used for laboratory research, testing of materials in the field of high dynamic pressures, in the development of anti-meteorite protection structures and protection against high-speed fragments, during drilling operations in the dual and defense sectors (large-caliber small arms; barrels, rocket artillery, missiles from ATGMs to ICBMs) and space The values over a wide range.

 Known devices (explosive tubular accelerators VTU (a.s. RF 2072501, IPC F 42 V 1/02) for throwing allow you to accelerate solids with a size of 0.1-10 mm, with a ratio of charge weight and throwing body weight of 500-100000, up to speeds of 8-14 km / s.

 The disadvantages of such devices include a fairly large consumption of explosives. In addition, the strong effect of combustion products on the propelled body, which leads to its significant deformation and possible destruction during acceleration. In addition, the principles of throwing used from 1000 m / s do not allow the use of throwing bodies significantly exceeding laboratory characteristics in weight and size. A significant length of the acceleration channel (pipe) for propelled bodies with dimensions much larger than laboratory ones. Insignificant range of the trajectory of the missile body after exiting the acceleration channel.

 The objective of the invention is to create a new type of explosive tubular accelerator (hereinafter VTU), which will increase the weight and volume of the missile body and reduce the weight of the propellant charge relative to the weight of the missile. Increase the flight range after exiting the acceleration channel with a shorter acceleration channel.

 The technical result that can be obtained by using it is that the parameters of the missile body are increased (weight, volume), i.e., the mass and volume of the missile body increases to the level of widespread use (grams, kg., Ton), increases throwing speed (from 1000 m / s in the lower atmosphere) and the flight range of (heavy) bodies; the weight and volume of the propelling charge are reduced with respect to the weight and volume of the missile body, the length of the acceleration channel (pipe) is reduced, which allows the construction of a VTU compactly.

The solution to this problem is achieved by the proposed explosive tube accelerator (VTU) of a combustible substance (propellant charge), including a propellant charge with electric igniters, a contact closure plate, a throwable body and a hollow metal cup, which is a barrel for its acceleration, the depth of which corresponds to the condition
L = L _(charge) + L _(PL) + PL _(meth) + L _(burnout)
L is the total length of the channel of the booster pipe (depth of the glass);
L _(zar) is the shell length of the propellant charge;
L _(pl) is the thickness of the circuit plate;
L _(meth) is the length of the missile;
L _(combustion) is the channel length corresponding to the complete combustion of a combustible substance;
P - coefficient from 2 to "C" to stabilize the flight of a missile;
"C" - pressure of the products of complete combustion of a combustible substance from igniters in an amount n, corresponding to the pressure during complete combustion of a given combustible substance from one igniter
with an insulated contact (terminal) in the center of the bottom, a propellant charge in an airtight metal sheath under the inner diameter of the cup with two opposite insulated contacts (terminals), inside the shell are electric igniters corresponding to the burning rate condition
n <n (s); n (s) = V / V (m); n = n (s) -n (s) K
where n is the number of electric igniters;
n (s) is the number of electric igniters corresponding to the explosion;
s is the burning rate corresponding to the explosion;
V (m) is the ignition volume of the propellant charge from one electric igniter per unit time;
V is the volume of the entire shell of the propellant charge;
K - coefficient from 0.4 ~ 0.9 is set depending on the tasks being solved.

 For the simultaneous initiation of electric igniters are connected to an electric circuit and brought to the terminals, between the throwing body and the shell is a contact closure plate under the inner diameter of the glass. The characteristics of the VTU vary depending on the tasks being solved, by changing all the structural elements tied into a single whole.

 In the proposed VTU, the accelerated body is accelerated by filling the pipe (barrel) with a propellant charge with several igniters, which made it possible to increase the throwing speed when compressing the propellant charge (reducing the ratio of the charge weight of the combustible substance to body weight), reduce the length of the acceleration channel (pipe), increase dimensions and weight of the propelled body; increase the length of the flight path after exiting the acceleration channel.

 The essence of the proposed VTU is shown in the drawing. BTU consists of a hollow metal cup (8) with an insulated contact in the center of the bottom (9), a propelling charge (2) in a metal shell (1) under the inner diameter of the cup (8) with two opposite insulated contacts (5). Inside the metal shell there are electric igniters (3) connected by an electric circuit (4). Between the missile body (7) and the shell with a combustible substance there is a contact closure plate (6).

 The missile body (7) is accelerated in a metal cup (8) using a propellant charge (2), the design of which ensures complete combustion of the combustible material from igniters (3), in which the VTU device is not yet destroyed due to explosion from pressure overload.

 The proposed device operates as follows.

 After supplying electricity to the VTU using series-connected electric igniters (3), a simultaneous ignition of a combustible substance (2) takes place in the charge housing (1). Inside the glass (8), a pressure is created corresponding to the condition of the burning rate. The combustion products of a combustible substance are gas compressed to a high density, which, expanding, presses on the glass (8) and the contact closure plate (6) adjacent to the missile body (7). Under gas pressure, the contact closure plate (6) sets in motion, in turn pushing the propelled body (7) in front of it. Throwing body (7), moving along the pipe channel (glass (8)), accelerates. By the time the propelled body (7) leaves the cup body (8), the propellant charge (2) completely burns out. At the cut of the glass (8), the throwing body (7) has a maximum speed of movement.

Claims (2)

 1. An explosive tubular accelerator containing a propelling charge, a means of initiating it, a throwing body and a metal hollow cup, which is a barrel for its acceleration, characterized in that the propelling charge is placed in a hermetic metal shell having two opposite isolated contacts and placed under the inner diameter of the hollow a metal cup, the initiating means is made in the form located inside the metal shell, connected in an electric circuit, electric igniters, brought to the positive insulated contacts of the metal shell, while the accelerator is equipped with a contact closure plate.  2. The accelerator according to claim 1, characterized in that the contact closure plate is placed between the missile body and the hermetic metal shell inside the hollow glass.