JP2537487Y2 - Interstage separation equipment for multi-stage rockets - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an interstage separation device for a multistage rocket.

[Conventional technology]

FIG. 8 shows a conventional multistage rocket constructed by sequentially connecting the first stage rocket 1, the second stage rocket 2,... The fourth stage rocket 4 in order from the top. The figure is a detailed view of the box IX in FIG. 8, and FIG. 10 is a sectional view taken along the line XX of FIG.

The interstage connecting the respective stages of such a multistage rocket is disposed between the outer shell of the third rocket 3 and the outer shell of the fourth rocket 4, for example, as shown in FIG. , The outer plate 8 and the joint 9 are joined by joining them with bolts 7. The interstage separation device for separating this connection is of a type in which the outer plate 8 is cut and separated by a spring actuator 11, and is constituted by a molded explosion broken line 6, which is a pyrotechnic for cutting the outer plate, and a molded blast. It comprises a support 10 for holding the wire 6, a detonator 5, which is a pyrotechnic for initiating a molded explosion dashed line, and a spring actuator 11 for generating a separating force.

In such a configuration, the load generated on the ground and in the step between the stages during flight is carried by the outer plate 8. When an electric signal for separating the stages of the rocket is inputted, the explosives in the detonator 5 are ignited, and the explosion dashed line 6 is detonated by the detonation energy. The explosion of the molded explosion dashed line 6 forms a jet by being detonated, cuts the outer plate 8, releases the connection between the steps, and completes the separation of the steps of the rocket.

[Problems to be solved by the invention]

The above-described conventional stage separation device for a rocket has the following problems to be solved.

That is, the conventional interstage separation device cuts and cuts the outer plate by the jet caused by the explosion of the molded explosion dashed line, and the fire caused by the small pieces of the cut outer plate and the jet during the cutting of the outer plate enters the rocket body. It may splatter, damage rocket components and cause mission failure. In order to prevent the scattering into the inside, in the conventional example, the scattering prevention plate is installed inside the outer plate cut portion, but there is a problem that the weight is increased by installing the scattering prevention plate.

SUMMARY OF THE INVENTION An object of the present invention is to provide an inter-stage separation device for a rocket that can solve the above-mentioned problems of the conventional example.

[Means for solving the problem]

As a means for solving the above-mentioned problem, the present invention provides a reflector for explosion shock wave reflection, which is connected in multiple stages, and is in contact with the outer periphery of a cut separation surface between a plurality of rockets that cut and separate each stage in the air, It is an object of the present invention to provide an interstage separation device for a multistage rocket, comprising: an explosive provided outside the reflector; and an explosive means for initiating the explosive via a detonating wire. is there.

[Action]

Since the present invention is configured as described above, it has the following operation.

That is, the detonation shock wave generated by the detonation of the explosive abutted on the outer periphery of the cut separation surface between each rocket stage passes through the explosive shock wave reflection reflector interposed between the explosive and the cut separation surface and cuts. A tensile stress wave acts on the separation surface (outer plate), causing a crack to enter from the inside of the outer plate forming the cut separation surface and cutting the outer plate sequentially.

〔Example〕

One embodiment of the present invention will be described with reference to FIGS.
The same reference numerals are given to the same components as those in the conventional example, and the description is omitted.

FIG. 1 is a side view of the present embodiment corresponding to FIG. 9 of the conventional example, FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 1, and FIGS. FIG. 6 is an explanatory view of the operation of the present embodiment corresponding to FIG. 6, FIG. 6 is a cross-sectional view of the detonating wire 14 constituting a part of the detonating means used in the present invention, and FIG. FIG. 3 is an explanatory view of the operation principle of a sheet-like explosive 12 which is an explosive according to the present invention used in an example.

In FIGS. 1 and 2, reference numeral 13 denotes a shock wave reflection tape which is a reflector for reflecting the explosion shock wave according to the present invention, which is surrounded by the outer plate 8 and is made of a rubber magnetic material. An explosive sheet explosive is affixed to the outer peripheral surface. 14
Reference numeral 15 denotes a detonating wire for the sheet-shaped explosive 12, and 15 denotes a detonator which, together with the detonating wire 14, constitutes the detonating means of the present invention for detonating the detonating wire 14. As shown in FIG. 6, the detonating wire 14 has a soft cylindrical metal coating 14a filled with an explosive 14b.

Next, the operation of the above configuration will be described. To separate the third stage rocket 3 and the fourth stage rocket 4, first, the detonator
15 is detonated, whereby the detonating wire 14 and the sheet explosive 12 are sequentially detonated. The detonation shock wave generated by the detonation of the sheet-like explosive 12 travels in a plane through the shock wave reflection tape 13 and the outer plate 8 (metal) as shown in cross section in FIG. And is converted into a reflected tensile stress wave, which generates a crack inside the outer plate 8 and cuts it to tear it off. At this time, the shock wave reflection tape 13 plays a role of concentrating the detonation shock wave of the sheet-shaped explosive 12 on the cut portion of the outer plate 8. When the outer plate 8 is cut, the third-stage rocket 3 and the fourth-stage rocket 4 are separated by the spring force of the spring actuator 11, and the separation is completed. That is,
The outer plate 8 is cut and separated by local tensile fracture, not by fusing as in the prior art, so that it has no adverse effect on the surroundings.

FIG. 3 to FIG. 5 are schematic explanatory diagrams sequentially showing the situation from the initiation to the separation.

As described above, the separation by the operation of the present embodiment is performed by the third-stage rocket 3.
Although the example of the fourth stage rocket 4 has been described, the same applies to the other stages.

As described above, according to the present embodiment, the separation between the stages of the multi-stage rocket is performed not by fusing but by tensile cutting, so that there is no need to install a shatterproof plate for internal protection as in the past,
The advantage is a corresponding reduction in weight.

[Effect of the invention]

Since the present invention is configured as described above, it has the following effects.

That is, since the separation of the stages of the multi-stage rocket is performed by cutting off the outer plate by blasting the explosive in the form of a sheet without fusing, there is no need for a shatterproof plate to prevent damage to internal components of the fuselage, Rocket weight is reduced.

[Brief description of the drawings]

FIG. 1 is a partial side view of one embodiment of the present invention applied to a stage of a multistage rocket, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, and FIGS. FIG. 6 is an explanatory view of the operation sequence of the above embodiment, corresponding to the drawing, FIG. 6 is a sectional view (explanatory view) of a detonating wire used in the above embodiment, and FIG. 7 is a sheet explosive used in the above embodiment. FIG. 8 is a side view of a conventional multistage rocket (lower section omitted), FIG. 9 is an enlarged view of a box IX in FIG. 8, and FIG. 10 is a view taken along the line XX of FIG. It is sectional drawing. 3rd rocket, 4th rocket, 4th rocket, 8
Outer plate, 12 ... sheet explosive, 13 ... shock wave reflection tape,
14 ... detonator, 15 ... detonator.

Claims (1)

(57) [Scope of request for utility model registration] An explosive shock wave reflecting reflector abutted on an outer periphery of a cut separation surface between a plurality of rockets which are connected in multiple stages and cut and separate each stage in the air, and provided outside the reflector. An interstage separation device for a multi-stage rocket, comprising: provided explosives; and detonating means for detonating the explosives via a detonating wire.