JPS5822900A - Rear injection induction device for recoilless firearm - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a "recoilless firearm" typified by a recoilless gun.

Conventional recoilless firearms have a 1α tangential rear jet to make them recoilless, so automatic loading of cartridges is not possible, and the shooter cannot stay behind. This functional limitation has hindered the technological development of recoilless firearms and has resulted in a distraction from the qualitatively ideal property of ``recoilless''.

The purpose of the present invention is to ensure the recoil-free nature of firearms, provide a device for automatic rear loading of cartridges, and save the "rear space" (6) necessary for a shooter to be present if necessary. The objective is to provide a ``back injection guidance device for recoilless firearms'' that achieves this goal.

Hereinafter, the present invention will be explained in detail with reference to the drawings.

[Rear injection guide device for recoilless firearms] consists of [rear injection guide pipe 1 (3) and “rear injection pipe” (5). The "rear injection guide tube" (3) is a space behind the cartridge (2) for installing mechanical devices necessary for automating firing, such as an automatic ammunition loading device, and for the people who operate them. In order to realize the rear space (6), it has the function of bypassing the rear injection of gunpowder gas. The ``rear injection tube'' (5) directs the flow of gunpowder gas diverted by the ``rear injection guide tube'' (3) into the ``rear space,'' which is a coaxial extension of the bullet launch tube J (1) (gun barrel). It plays the role of summarizing after (6). In this way, the ``rear injection guidance system for recoilless firearms;
).

Sir, let me describe some specific examples shown in the figure.

Figure 1 shows the simplest "rear injection guide device for recoilless firearms", which consists of one "rear injection guide pipe" (3), followed by one "rear injection pipe" (5). Consists of. Its operating principle pl+ is as follows.

When the cartridge (2) is ignited, the bullet and gunpowder gas pass through the bullet launch tube (1) and produce a reaction force (F) against the firearm. In addition, the gunpowder gas also flows in the direction of the "fi-direction injection guide pipe" (3) and the rear injection pipe (5), and the reaction force (11 □l, (2f
) occurs. The relationship between these vectors when the tube diameter is adjusted and there is no recoil is as shown in the following equation.

F, +F2-0 ・・・・・・・・・・・・・・・
...... (1) 1'l +2r1"O...
・・・・・・・・・・・・・・・・・・ (2) (However, a couple occurs in E(2).)) III. Since the sum of the vectors is the sum, the firearm as a whole does not move. However, in the case of AJ(2), "1 couple" occurs. Also, these powers, (1 "1")
The action of (2F) substantially acts as a vibrating force due to the time difference in which the gunpowder gas acts, which is the width of the force.

For this reason, the ``rear injection guidance device for recoilless firearms'' of the type shown in Figure 1 is not perfect in terms of [+11], but when seeking an approximate effect, it is an f1 effect.

Next, we will discuss a rear-injection guidance system for recoilless firearms that theoretically does not generate ``couples'' or ``vibrations.''

Figure 2 shows two "rear injection guide pipes" (3) and one "rear injection guide pipe" (3).
This is a recoilless firearm recoilless firearm guidance system 1 that has a rear injection tube (5) and removes the couple and vibration that occur in equation (2). When the diameter is adjusted and there is no recoil, the relationship between each vector is as shown in the following equation.

F10 F2=0 ・・・・・・・・・・・・・・・
・・・・・・(:))lfl+1f2-0 ・・・
・・・・・・・・・・・・・・・・・・(4)2 '1
+2f2 ”0 ・・・・・・・・・・・・・・・
(5) That is, the sum of the vectors is zero and no couple occurs.

Therefore, this type is the simplest type of [back-injection guidance device for recoilless firearms] that requires precision. however,
In practice, some vibration may occur due to errors in machining or uneven spraying of the hole gas, but it is effective for purposes where normal effects are desired.

Next, we will discuss the ``reverse injection guidance device for recoilless firearms,'' which aims to achieve high precision and practical effects. The difference between this type and the type shown in Figure 1 and the type shown in Figure 2 is the number of "rear injection guide tubes" (3). Generally, it is stable when the number of "rear injection guide pipes" (3) is three or more. Here, the primary purpose of the "rear injection guidance device for recoilless firearms" is 1. To realize the "rear space" (6) for installing an automatic ammunition loading device behind the cartridge (2). Therefore, in order to use a highly efficient type of "rear space" (6), the simplest number of "rear injection guide pipes" (3) is four.

This is shown in Figure @3, and when the tube diameter is adjusted and there is no recoil, the relationship between each vector is as shown in the following equation.

p, +F2-0 ・・・・・・・・・・・・・・・
・・・・・・(6) 1f□+1'2+□f3+, f420 ・・・・・・・・・(7) 2f engineering+2 f2+ 2
f: s + 2 f 4 ” 0 ・・・・・・
Self (8) IJII, the sum of the vectors is zero, no couple occurs, and no vibration occurs.

Next, in the rear injection guide pipe 1 of a recoilless firearm, which generally has n rear injection guide pipes (3) and one rear injection pipe j (5), the pipe diameter is adjusted, The relationship between each vector when there is no recoil is as shown in the following equation.

F1+F220 ・・・・・・・・・・・・・・・
...(911f1+1f2+, f, 10-...=
+, fn=0 ・---(10)2r1+2f2+
, f, +−−−−+2frl=O−−−−(11)n
[rear injection guide pipe J (3) of i number such that exceeds 4
This is especially true for large-caliber firearms.

In summary, [rear injection guide pipe J (3)] one has an approximate effect, two has an accurate but unstable effect, and three or more is stable.

Next, the "rear injection pipe" (5) will be described in additional detail.

"Back injection tube" (5) is "bullet launch tube J (1)
It is on the same axis as the (gun barrel). Due to this, the forces (F) and (F2) in the opposite direction to the firing force are balanced and the entire firearm does not move, but this principle is the same as the principle of recoilless guns, and the belongs to. The novelty of the "rear injection pipe" (5) here is that it brings together another function, the "rear injection guide pipe" (3), at the rear.

That is, a plurality of rear injection guide pipes J (:31)
Make the injection into one, adjust the injection direction and gas IE, and adjust the shape of the firearm. However, a device with two or more "rear injection guide pipes" (3) does not necessarily require "mikado injection pipes" (5), but in that case, the gunpowder gas is "back injection guide pipe" (3). It is injected directly to the rear and outside from the guide pipe (3).

Figure 4 is an example.

In summary, regarding the number of "rear injection pipes" (5),
Some have one tree, some have two or more trees, and some have none.

As is clear from the above, [backward injection a of recoilless firearms]
There are the following implementation bright lines for the 4 device 11J.

■ Consists of one "rear injection guide pipe" (3) and one "rear injection pipe" (5).

■ Consisting of two rear injection guide pipes (3) and one rear injection pipe (5).

13) Consisting of three or more "hyperactive injection 4-pipe I" (3) and one "rear injection pipe" (5).

・4) Consisting of three or more "rear injection guide pipes (3)" and two or more "rear injection pipes" (5).

(Mackerel) Consists of two wooden "rear injection guide pipes" (3),
Those that do not have the rear injection Q4 pipe (5).

0 ; Consisting of a "rear injection guide pipe" (3) that is larger than a carousel, and does not have a "rear injection pipe (5)."

Note that the bullet launch tube J (1) and the rear injection guidance device for recoilless firearms must be rigidly connected and have sufficient strength.

[Brief explanation of the drawing]

Figure 1 shows a recoilless firearm with a recoilless firearm rear injection guide system consisting of one ``rear injection guide tube'' (3) and one ``rear injection tube'' (5). Cross-sectional view of main parts. Figure 2 shows the recoil U+, which has an ashless #J firearm rear injection guidance device consisting of two rear injection guide pipes (3) and one rear injection pipe (5). Figure 3 is a cross-sectional view of the main parts of the firearm. A perspective view of the wedge part of a recoilless firearm with a bag. Figure 4 shows the main parts of a recoilless firearm, which consists of four ``rear injection guide tubes'' (3) and has no ``rear injection tube'' (5). A perspective view of. ■... Bullet launch tube (- gun barrel as an example). 2.2
．． - Cartridge. 3... Rear injection guide pipe. 4... Part of the closing machine. 5... Rear injection pipe. 6...Automatic ammunition loading device for cartridges, etc., and rear space J07 for shooters...Structure to provide rigidity.

Claims (1)

[Claims] In recoilless firearms, realize a "rear space" (6) that can be used as air + 1fi for installing rear automatic ammunition loading devices of cartridges, etc., and space for the shooter [rear injection guidance of recoilless firearms] Device"