JPH0791898A - Missile - Google Patents

Abstract

PURPOSE:To provide a missile in which a kinetic energy can be kept or increased during its flying operation and the missile can positively pass through a target. CONSTITUTION:This missile is provided with a ram jet combustion device 10 having an air intake port 11 at its hollow head part and having a ram nozzle 12 at its tail end, a penetrator 2 arranged within the ram jet combustion device 10 and having a solid fuel 3 fixed therein, and a strat 5 for supporting the penetrator 2 on an axis of the ram jet combustion device 10. The penetrator 2 and the strut 5 are connected through a silver brazing part 6 which is melted in response to a completion of combustion of the solid fuel 3 with an air flow of high temperature flowing from the air inlet port 11 and compressed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION This invention is to obtain an initial velocity and fly,
The present invention relates to a flying object that penetrates a target by kinetic energy at that time when the target is reached.

[0002]

2. Description of the Related Art Conventionally, as the above-mentioned flying body, for example, as shown in FIG. 3, there is a rocket-type flying body 51 having a stabilizer 52 on a tail portion 52. The rocket-type flying body 51 is given an initial velocity to fly ballistically to a target, and at the stage of reaching the target, the kinetic energy at this time penetrates the target.

In the case of this rocket-type flying body 51, the air resistance received during the flight decelerates to decrease the kinetic energy. Therefore, recently, the rocket-type flying body 51 is changed to a ramjet to fly. Attempts have been made to accelerate and maintain or increase kinetic energy.

Regarding the rocket-type flying body described above, for example, "Latest Defense Technology Taisei" February 11, 1985.
Date, page 163 to page 164, published by R & D Planning Co., Ltd.

[0005]

However, in the above-mentioned conventional rocket-type flying body 51, as described above,
At the stage of reaching the target, the rate of piercing the target is not high because the kinetic energy is significantly reduced.

Further, when the rocket type flying body 51 is made into a ramjet to maintain or increase kinetic energy during flight, a large amount of fuel cannot be loaded due to design restrictions. The burning time of fuel becomes short. In other words, after the combustion of the fuel is completed, the air resistance received by the ramjet components such as the air intake port, the combustor, and the ram nozzle causes a rapid deceleration, and in the end, the kinetic energy when reaching the target is sufficient to achieve the target. There is a problem that it is difficult to say that the target penetration rate is high like the above,
It has been a conventional problem to solve this problem.

[0007]

It is an object of the present invention to provide a flying object capable of maintaining or increasing kinetic energy during flight and reliably penetrating a target. The purpose is to do.

[0008]

A projectile according to the present invention comprises a ramjet combustor having a hollow shape, an air intake port in the head portion, and a ram nozzle in the tail portion, and the ramjet. It is provided with a core provided in the combustor and fitted with a solid fuel, and a strut for supporting the core on the axis of the ramjet combustor. It is characterized in that the bullet core and the struts are connected via a hard brazing portion that melts at the end of combustion of the solid fuel due to the air flow. As a means to solve

And in one embodiment, the core has:
A strut sliding groove is provided in the axial direction.

In this case, the temperature of the compressed air flow flowing in from the air intake port is about 1700K at an altitude of 0km and a Mach number of 5, so that the hard brazing portion connecting the core and the strut is 900K ~. It is desirable to use a silver brazing part that melts at 1100K.

[0011]

In the flying object according to the present invention, when the initial velocity is given and the flying is started, the air flowing from the air intake port is compressed by the ram pressure to a high temperature, and the high temperature airflow ignites the solid fuel. Then, the combustion gas generated by this combustion is ejected from the ram nozzle to generate a propulsive force, which compensates for the loss of kinetic energy due to air resistance during flight, and the kinetic energy of the flying object is not maintained. Will be increased.

During this time, the hard brazing portion connecting the core and the strut is covered with the solid fuel, so that the hard brazing portion is protected from the hot air flow.

Next, when the burning of the solid fuel is completed, the hard solder portion covered with the solid fuel comes to be exposed,
Since the hard brazing portion flows from the air intake port, is compressed, and is exposed to the air flow having a high temperature and melted, the core and the strut are separated.

At this time, the ramjet combustor having the air intake port and the ram nozzle is rapidly decelerated due to the air resistance, but since the core and the strut are already separated, only the core is ram. The air will fly away from the jet combustor and fly to the target while maintaining almost the same kinetic energy as before the separation. Therefore, the rate of penetrating the target will be extremely high.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.

1 and 2 show an embodiment of a flying object according to the present invention.

As shown in FIG. 1A, this flying object 1
Is provided with a hollow ramjet combustor 10, an air intake 11 is provided at the head (left side in the figure), and a ram nozzle 12 is provided at the tail (right side in the figure). A plurality of stabilizing blades 13 are provided around the ram nozzle 12.

The flying body 1 is also provided with a penetrator (core) 2 housed in a ramjet combustor 10, and a solid fuel 3 is fitted in an intermediate portion of the penetrator 2. A step 4 for holding flame is provided on the head side.

Further, the flying body 1 includes a penetrator 2
Is provided on the axial center of the ramjet combustor 10. A plurality of struts 5 are provided in the vicinity of the air intake 11 and in the vicinity of the ram nozzle 12, respectively. As shown in FIG. 1 (b), the penetrator 2 and each strut 5 are different from each other in this embodiment. , Silver brazing 6 parts. That is,
Each silver solder 6 that connects the penetrator 2 and the strut 5
The part is covered with the solid fuel 3 (shown by phantom lines in FIG. 1 (b)), and when the combustion of the solid fuel 3 is completed, from the air intake 11 of the ramjet combustor 10. It is melted by the flow of air that flows in, is compressed, and has a high temperature.

In this case, the penetrator 2 has a structure shown in FIG.
As shown in (c), the strut sliding groove 2a is provided along the axial direction, and when each silver brazing part 6 is melted by the air flow having a high temperature, as shown in FIG. The penetrator 2 and the ramjet combustor 10 can be smoothly separated from each other without interfering with each other.

Next, the operation of the flying body 1 will be described.

First, when an initial velocity is given to start flight, the air flowing in from the air intake 11 is compressed by the ram pressure to a high temperature, and the high temperature airflow ignites and burns the solid fuel 3, The combustion gas generated by the combustion is ejected from the ram nozzle 12 to generate a propulsive force. Therefore, the loss of kinetic energy due to air resistance during flight is compensated, and the kinetic energy of the flying vehicle 1 is maintained or increased.

During this time, the penetrator 2 and each strut 5
Since the silver brazing part 6 connecting the and is covered with the solid fuel 3, these silver brazing parts 6 are protected from the hot air flow.

Next, when the combustion of the solid fuel 3 is completed,
6 parts of each silver solder are exposed, and these silver solder 6 parts are exposed.
Since the part is exposed to the air flow that has flowed in from the air intake 11 and is compressed and has a high temperature to be melted, the penetrator 2 and each strut 5 are separated from each other.

Since the ramjet combustor 10 having the air intake 11 and the ram nozzle 12 falls into a rapid deceleration state due to air resistance, the penetrator 2 is separated from the ramjet combustor 10 as shown in FIG.

At this time, since the strut sliding groove 2a of the penetrator 2 and the struts 5 slide on each other, the penetrator 2 interferes with the ramjet combustor 10 on the axis of the ramjet combustor 10. Move without
Then, the ramjet combustor 10 is smoothly separated.

Therefore, the penetrator 2 flies to the target while maintaining the kinetic energy before the separation, so that the rate of penetrating the target is extremely high.

In this embodiment, since the penetrator 2 is provided with the strut sliding groove 2a in the axial direction thereof, the penetrator 2 can be smoothly separated from the ramjet combustor 10 without interference.

The detailed structure of the flying object according to the present invention is not limited to the above embodiment.

[0030]

As described above, since the flying object according to the present invention has the above-described configuration, it is possible to compensate for the loss of kinetic energy during flight and maintain or increase the kinetic energy to reach the target. At the stage of
It has an extremely excellent effect of being able to reliably achieve the goal.

[Brief description of drawings]

FIG. 1 (a) is a sectional explanatory view showing an embodiment of a flying object according to the present invention. (B) It is an expanded sectional explanatory view in the connection part of the penetrator and strut of the flying object shown in FIG. 1 (a). FIG. 1C is a partially enlarged cross-sectional explanatory view of the flying object of FIG. 1A viewed from the head side.

2 is a cross-sectional explanatory view showing a penetrator separating operation in the flying object of FIG.

FIG. 3 is a side view showing a conventional flying object.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Flying body 2 Penetrator (core) 2a Strut sliding groove 3 Solid fuel 5 Strut 6 Silver brazing part (hard brazing part) 10 Ramjet combustor 11 Air intake port 12 Ram nozzle

Claims (2)

[Claims] 1. A ramjet combustor which is hollow and has an air intake port in its head part and a ram nozzle in its tail part, and a solid fuel fitted in said ramjet combustor. And a strut that supports the core on the axial center of the ramjet combustor, and is melted by the end of combustion of the solid fuel due to the air flow that is compressed by the air intake port and becomes high temperature. A projectile characterized in that the core and the strut are connected to each other via a hard brazing part. 2. The projectile according to claim 1, wherein the bullet core is provided with a strut sliding groove in the axial direction.