JP2017101905A - Firing method for artillery shell - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a firing method for artillery shell capable of performing a simultaneous reaching at one object target by a plurality of artillery shells fired from one warship cannon under application of a semi-fixed explosive charge.SOLUTION: This invention utilizes a range extended artillery shell 10 having a rocket motor 13 changing a flight speed; makes a data base including a firing angle, a maximum launching height and flight times that are calculated for each of a plurality of speed changing modes set in compliance with combination of a warship cannon 1 and the range extended artillery shell 10; calculates a launching angle of the artillery shell 10, an ignition timing of the rocket motor 13 and a flight time required up to a target T at the time of getting a distance required up to the target T on the basis of the data base for every speed changing mode; selects in sequence the plurality of launching extended artillery shells 10 from the speed changing mode of long flight time so as to cause them to reach the target T simultaneously; launches the range extended artillery shell 10 corresponding to the selected speed changing mode by the semi-fixed explosive charge 2; and ignites the rocket motor 13 at a timing corresponding to the speed changing mode.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a shell shooting method used when a plurality of shells are fired from a single gun to attack a target.

  As described above, when a plurality of shells are fired from a single gun to attack a target, the plurality of shells are normally landed sequentially at intervals with respect to the target. At this time, if the interval between the bullets is long, it will give the target time to evacuate. It is desirable to have a shell hit the target.

Conventionally, as a method for projecting a shell that hits a target with a plurality of shells as described above, there is one described in Non-Patent Document 1, for example.
This cannonball is fired using a gun that uses a separate charge (fire gunpowder packed in a separate pouch), such as a howitzer, with a wide range of angles and within the maximum range. It is a shooting method that can be taken when the target is located.

  In this method of projecting bullets, MRSI (Multiple Rounds Simultaneous Impact) is used to reduce the amount of shots and the amount of separation charge little by little from a high launch angle. More than one shell can be landed at the same time.

Wikipedia English version Artillery "MRSI"

  However, in the above-described conventional method of shooting bullets, two or more shells are formed by adjusting the amount of gunpowder by changing the number of gunpowder filled with gunpowder for separation after using a separate charge. Although it is made to hit simultaneously, in order to avoid dangerous events, such as a failure | damage by the collision of the medicine capsules at the time of loading, it cannot be denied that a firing interval becomes long.

  On the other hand, in the case of a gun with a short shot interval, such as a war gun, in principle, the amount of gunpowder is changed for the convenience of using a semi-fixed charge (fire gunpowder packed in a different shell from the shell). As a result, there is a problem that a plurality of shells fired from one cannon cannot be landed at the same time on one target, and it has been a conventional problem to solve this problem It was.

  The present invention has been made paying attention to the above-described conventional problems, and was a case of a gun having a short shot interval using a predetermined amount of charge, for example, a gun using a semi-fixed charge. Even so, an object of the present invention is to provide a method of shooting a shell that can simultaneously hit a plurality of shells fired from one warship to one target.

  A first aspect of the present invention is a method of shooting a cannon using a defined amount of charge and firing a plurality of shells from a single cannon with a variable firing angle to attack one target. And adopting a variable speed bullet having a speed changing means for changing the flight speed as the plurality of bullets, calculated for each of a plurality of preset speed change modes corresponding to a combination of the cannon and the variable speed bullet. A database including a firing angle, a maximum altitude reached, and a flight time, and a speed change timing by the speed change means and the speed change means for causing the speed variable bullet to fly when the distance from the gun to the target is obtained. In addition, the flight time until reaching the target is calculated based on the database for each of the plurality of speed change modes, and based on the flight time for each of the plurality of speed change modes. The speed variable cannonballs are sequentially selected from a speed change mode that takes a long flight time of the flight time so that the plurality of speed variable bullets reach the target at the same time, and the speed variable cannonballs at a firing angle corresponding to the selected speed change mode. Is configured to cause the speed changing means to change the flying speed at a timing corresponding to the speed changing mode.

  According to a second aspect of the present invention, when a range extension cannonball equipped with a rocket motor capable of controlling ignition timing as the speed changing means is the plurality of variable speed ammunition, and when the distance from the gun to the target is obtained. The firing angle for causing the range-extended shell to fly, the ignition timing of the rocket motor, and the flight time until reaching the target are calculated based on the database for each of the plurality of speed change modes, and the plurality of speed changes Based on the flight time for each mode, sequentially select from the speed change mode that takes a long flight time of the flight time in order to simultaneously reach the plurality of range extension shells to the target, to the selected speed change mode The range extension cannonball is fired at a corresponding launch angle, and the rocket has a timing corresponding to the speed change mode. It is configured to ignite the over data.

  According to a third aspect of the present invention, the winged shell having a steering wing capable of increasing air resistance as the speed changing means is used as the plurality of speed variable shells, and when the distance from the gun to the target is obtained, Calculate the launch angle for flying the winged shell, the air resistance increase timing by the steering wing, and the flight time to reach the target based on the database for each of the plurality of speed change modes, and the plurality of speeds Based on the flight time for each change mode, the selected speed change mode is selected sequentially from the speed change mode that takes a long flight time of the flight time so that the plurality of winged shells can simultaneously reach the target. The winged shell is fired at a firing angle corresponding to the speed change mode and the steering wing is caused to perform an air resistance increasing operation at a timing corresponding to the speed change mode. It is set to.

  In the cannonball shooting method according to the present invention, first, the speed change mode that takes the longest flight time among the flight times of the variable speed shells for each of the plurality of set speed change modes is selected.

  Next, the variable speed shell is fired with a predetermined amount of charge at the firing angle corresponding to the selected speed change mode, and the flight speed is changed to the speed change means at the timing corresponding to the speed change mode. Make it.

  Here, when the variable speed bullet is a range extended shell equipped with a rocket motor capable of controlling the ignition timing as a speed change means, by igniting the rocket motor at a timing corresponding to the selected speed change mode, For example, the flight speed is increased by igniting the rocket motor at the same time as the launch, or by igniting the rocket motor after a predetermined time has elapsed since the launch.

  In addition, when the variable speed bullet is a winged bullet having a steering wing capable of increasing air resistance as a speed changing means, the steering wing is caused to perform an air resistance increasing operation at a timing corresponding to the selected speed changing mode. Thus, for example, the flying speed is decelerated by causing the steering blade to perform an air resistance increasing operation after a predetermined time has elapsed since the launch.

  Each flight time of the subsequent variable velocity shells following this variable velocity shell is set to be as short as the variable velocity shells that are fired later, so that the first variable velocity bullet will hit the target at the same time. .

  Therefore, after that, the speed change mode that takes a long flight time is selected in order, and the variable speed shell is fired with a predetermined amount of charge at the firing angle corresponding to the selected speed change mode. When the speed change means is made to change the flight speed at the timing corresponding to the mode, the first speed variable cannonball and the subsequent multiple speed variable cannonballs pass the maximum altitude reached for each, You will hit one target at the same time.

  In other words, even in the case of a cannon using a predetermined amount of charge, for example, a semi-fixed charge, a plurality of shells fired from one cannon can be simultaneously landed on one target. It will be.

  In the shell shooting method according to the present invention, a single gun can be used even if it is a gun with a short shot interval using a predetermined amount of charge, for example, a gun using a semi-fixed charge. This has the excellent effect of allowing a plurality of fired bullets to be landed on a single target at the same time.

It is sectional explanatory drawing in alignment with the axis direction of the range extension shell adopted with the shooting method of the shell by one Example of this invention. It is a graph which shows the trajectory at the time of making the range extension bullet in FIG. It is side surface explanatory drawing of the winged shell used by the shell shooting method by the other Example of this invention.

Hereinafter, a method for shooting bullets according to the present invention will be described with reference to the drawings.
FIG. 1 and FIG. 2 show a range extension cannonball and its trajectory employed in a cannonball shooting method according to an embodiment of the present invention.

  As shown in FIG. 1, a range extension cannonball 10 employed in the method of shooting a cannonball of this embodiment is a cannonball fired from a gun 1 having a variable firing angle, and a predetermined amount of charge (for example, , Smokeless gunpowder) is fired using a semi-fixed charge 2 formed by filling the medicine.

  This range extension cannonball 10 includes a bullet case 11, a glaze 12 (for example, D explosive) accommodated on the head 11 </ b> N side of the bullet case 11, and a velocity arranged on the tail portion 11 </ b> T side of the bullet case 11. The rocket motor 13 is provided as a changing means, and the rocket motor 13 is ignited when the range-extending shell 10 is fired, or at a plurality of predetermined selectable timings within the shell rising time after launch. It is supposed to be ignited.

  Therefore, as shown in FIG. 2, when one target T (for example, a target T with a distance of 90 km) is attacked using the above-mentioned one gun 1, first, a rocket motor as the speed changing means described above is used. A range extension cannonball 10 equipped with 13 is adopted, and the launch angle, maximum altitude, and flight time calculated for each of a plurality of speed change modes set in advance corresponding to the combination of the gun 1 and the range extension cannonball 10 are used. Build a database containing

  Based on a database for each of a plurality of speed change modes, the launch angle for causing the range-extended shell 10 to fly to the target T to which the distance is given, the ignition timing of the rocket motor 13, and the flight time until the target T is reached are obtained. To calculate.

  In this embodiment, a speed change mode (non-delay mode) in which the rocket motor 13 is ignited immediately after launching the range extension shell 10 using the semi-fixed charge 2, and the range extension shell 10 is fired for a predetermined time ( After setting the speed change mode (60-second delay mode) to ignite the rocket motor 13 after 60 seconds), the non-delay mode is further divided into low- and high-angle trajectories, and the 60-second delay mode Furthermore, a total of four speed change modes are set for the low-angle and high-angle trajectories.

  Here, in a mode in which the rocket motor 13 is ignited after a predetermined time has elapsed since the range-extending shell 10 is fired, for example, when the ignition timing of the rocket motor 13 is delayed, the rocket motor 13 operates at a high altitude with low atmospheric pressure. Therefore, even with the same rocket motor 13, rocket performance such as theoretical specific thrust and flight speed is improved. On the other hand, since the speed increase by the rocket motor 13 is close to the maximum altitude, the effect of the speed increase on the entire trajectory is reduced. As described above, the influence of the change in the ignition timing of the rocket motor 13 on the flight of the extended range ammunition 10 cannot simply be said to be large or small, but it can be said that it is comparable to the conventional change in the amount of separation charge.

  As described above, in this embodiment, the extended range ammunition 10 is adopted, and the rocket motor immediately after the extended range ammunition 10 is fired in consideration of the shooting interval (several seconds) of the war gun 1 capable of anti-air shooting. The no-delay mode for igniting 13 is set together with the 60-second delay mode.

  Next, in this embodiment, the firing angle for flying the extended range shell 10 in the set speed change mode and the flight time until reaching the target T are based on the database for each of the four speed change modes. calculate.

[Rocket motor ignition immediately after launch (no delay mode)]
・ No low-time low trajectory trajectory (Depressed trajectory IV)
Initial speed 1132m / s, firing angle 21.7 degrees, flight time approximately 86 seconds.
・ Non-timed high firing angle ballistic (Lofted ballistic I)
Initial speed 1132m / s, launch angle 68.4 degrees, flight time about 215 seconds.
[Rocket motor ignition 60 seconds after launch (60 seconds delay mode)]
・ 60 seconds low firing angle trajectory (depressed trajectory III)
Speed of fire of 62.9 degrees, ignition altitude of 15.8km, acceleration of about 561m / s, flight time of about 112 seconds.
・ Large 60 seconds high shooting angle ballistic (Lofted Ballistic II)
83.0 degrees of firing angle, acceleration of about 572m / s at an ignition altitude of 19.6km, flight time of about 130 seconds

  Thereafter, the longest flight time among the flight times in order to allow the four range-extended shells 10 to reach the target T simultaneously based on the flight times calculated and set for each of these four speed change modes. Select the Lofted Ballistic I, which is a non-delayed high firing angle trajectory with a flight time of about 215 seconds, and use the semi-fixed charge 2 at a firing angle of 68.4 degrees corresponding to the selected Lofted Ballistic I. As a result, the rocket motor 13 is ignited simultaneously with the firing of the extended range shell 10.

From then on, the lofted trajectory I is selected sequentially from the lofted trajectory II, which has the longest flight time, and the range-expanded shell 10 is fired by the semi-fixed charge 2 at each firing angle corresponding to the selected trajectory II to IV. At the same time, when the rocket motor 13 is ignited at each timing corresponding to the trajectories II to IV, the first range-extending shell 10 and the subsequent three range-extension shells 10 follow the trajectory I determined for each. By flying along ~ IV, it hits one target T at the same time.

  Therefore, even in the case of the gun 1 using the semi-fixed charge 2 as in this embodiment, a plurality of extended range ammunitions 10 fired from one gun 1 for one target T are simultaneously applied. You can hit it.

  The configuration of the shell shooting method according to the present invention is not limited to the above-described embodiment. As another configuration, for example, as shown in FIG. 3, a plurality of steering blades 23 capable of increasing air resistance. A configuration may be adopted in which the winged munitions 20 having the above as a speed changing means are a plurality of variable speed munitions.

  Here, when the winged shell 20 having four steering blades 23 arranged at 90 ° intervals as speed changing means is adopted as the speed variable shell, the timing corresponding to the selected speed changing mode, for example, the wing After a lapse of a predetermined time from the firing of the cannonball 20, the two adjacent steering blades 23 are steered in one direction, and the remaining two steering blades 23 are steered in the other direction. By increasing the resistance, the flight speed can be reduced without deviating from the trajectory.

  Further, in the above-described embodiments, the case where the shell shooting method according to the present invention is used for ship gun shooting is shown, but the shell shooting method according to the present invention is not limited to shooting using a ship gun.

1 Cannon
2 Semi-fixed charge (specified amount of charge)
10 Range extended shell (variable speed shell)
13 Rocket motor (speed change means)
20 Winged shell (variable speed shell)
23 Steering blade (speed changing means)
T target

Claims (3)

A method of shooting a cannon using a prescribed amount of charge and firing a plurality of ammunition from a single cannon with a variable firing angle to attack a target,
Adopting a variable speed bullet having a speed changing means for changing the flight speed as the plurality of shells,
Build a database containing the firing angle, maximum altitude, and flight time calculated for each of the multiple speed change modes set in advance corresponding to the combination of the gun and the variable speed shell,
When the distance from the gun to the target is determined, the firing angle for flying the variable speed bullet, the speed change timing by the speed changing means, and the flight time until the target is reached are the plurality of speed change modes. Calculated based on the database for each
Based on the flight time for each of the plurality of speed change modes, sequentially select from the speed change mode that takes a long flight time of the flight time in order to simultaneously reach the plurality of speed variable cannonballs to the target, the selection A method of shooting a shell that fires the variable velocity shell with the charge at a firing angle corresponding to the speed change mode and causes the speed change means to change the flight speed at a timing corresponding to the speed change mode.   A range-extended shell provided with a rocket motor capable of controlling ignition timing as the speed changing means is used as the plurality of speed-variable shells, and when the distance from the gun to the target is obtained, Calculate the launch angle, the ignition timing of the rocket motor, and the flight time until reaching the target based on the database for each of the plurality of speed change modes, and based on the flight time for each of the plurality of speed change modes, The range extension cannonballs are sequentially selected from a speed change mode that takes a long flight time among the flight times so that the plurality of range extension cannonballs reach the target at the same time, and the range extension cannonballs at a firing angle corresponding to the selected speed change mode. And igniting the rocket motor at a timing corresponding to the speed change mode. Shooting method of ammunition as claimed in.   A winged shell having a steering wing capable of increasing air resistance as the speed changing means is used as the plurality of speed variable shells, and firing for causing the winged shell to fly when the distance from the gun to the target is obtained. The angle, the air resistance increase timing by the steering wing, and the flight time until reaching the target are calculated based on the database for each of the plurality of speed change modes, and based on the flight time for each of the plurality of speed change modes. The winged shells are sequentially selected from a speed change mode that takes a long flight time of the flight time so that the plurality of winged bullets reach the target at the same time, and the winged bullets are emitted at a firing angle corresponding to the selected speed change mode 2. The bullet firing according to claim 1, wherein a bullet is fired and the steering wing is caused to perform an air resistance increasing operation at a timing corresponding to the speed change mode. Method.

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