KR-20260063279-A - Separation Device for Connected Structures

Abstract

A separation device for a structure according to one embodiment of the present invention is a device for separating a first frame and a second frame, which are connected structures, and is characterized by comprising: a separation block positioned spaced apart from the upper inner wall of the first frame; an explosive force generating part positioned between the upper inner wall of the first frame and the separation block; a shear pin connected to the first frame by penetrating the separation block; a separation bolt penetrating the second frame and connecting the second frame to the separation block; and a shock absorbing part connected to the second frame spaced apart from the separation block between the separation block and the lower inner wall of the second frame.

Inventors

• 김희철
• 이종웅
• 임성준
• 공철원

Assignees

• 한국항공우주연구원

Dates

Publication Date

20260507

Application Date

20241030

Claims (7)

1. A device for separating a first frame and a second frame, which are interconnected structures, A separation block positioned spaced apart from the upper inner wall of the first frame, An explosive force generating part located between the upper inner wall of the first frame and the separation block, A shear pin connected to the first frame by penetrating the above separation block, A separation bolt that penetrates the second frame and connects the second frame to the separation block, and Between the above separation block and the lower inner wall of the above second frame, a shock absorber connected to the second frame, spaced apart from the separation block. A separation device for interconnected structures, characterized by including
2. In paragraph 1, The above shock absorber A bottom plate fixed to the second frame, and A first plate and a second plate extending from the bottom plate toward the separation block and spaced apart at a predetermined interval A separation device for interconnected structures, characterized by including
3. In paragraph 2, The above shock absorber Includes one or more reinforcing plates (73, 74) extending from the bottom plate toward the separation block and connecting the first plate and the second plate. A separation device for interconnected structures characterized by
4. In paragraph 2 or 3, A separation device for interconnected structures, characterized in that a first slot and a second slot are formed on the bottom surface of the separation block at positions corresponding to the first plate and the second plate, respectively.
5. In Paragraph 4, The above first slot is It has a first groove portion having a width corresponding to the thickness of the first plate, and a first guide portion that is connected to the first groove portion and widens as it moves away from the first groove portion. The above second slot is A second groove portion having a width corresponding to the thickness of the second plate, and a second guide portion connected to the second groove portion and having a width that increases as it moves away from the second groove portion. A separation device for interconnected structures characterized by the following.
6. In Paragraph 4, A separation device for interconnected structures, characterized in that one or more reinforcing plates have a lower height than the first plate and the second plate.
7. In Paragraph 1, A separation device for interconnected structures, characterized in that the shock absorber is connected to the second frame by bonding or a fastener.

Description

Separation Device for Connected Structures The present invention relates to a separation device for interconnected structures, and more specifically, to a separation device capable of separating structurally constrained structures by releasing them with instantaneous force, such as in the separation of a space launch vehicle's payload fairing, satellite separation, or stage separation. The nose fairing of a space launch vehicle is a protective cover located at the very top of the vehicle, primarily serving to protect the payload (satellites, exploration equipment, etc.). The nose fairing is designed to withstand the extreme pressure, temperature changes, and shocks that occur as the launch vehicle passes through the atmosphere, and it separates upon reaching space to allow the payload to enter orbit. When the space launch vehicle reaches a certain altitude, the nose fairing automatically separates and falls into space; it is designed to use technologies such as explosive bolts, springs, and fatigue mechanisms as separation devices to avoid affecting the payload. FIG. 6 illustrates a nose fairing opening device disclosed in Korean Registered Patent Publication No. 10-0591799 as an example of such a nose fairing opening device. For reference, FIG. 6 corresponds to FIG. 7 of the aforementioned Korean Registered Patent Publication. For convenience of explanation, the reference numerals used in the aforementioned Korean Registered Patent Publication have been used as they are without modification, and even if these reference numerals overlap with the reference numerals used in the description of the present invention below, they do not refer to the same components. The existing nose fairing opening device is a nose fairing opening device (200) that opens the left and right openings (102, 103) of the nose fairing (100), and is equipped with a support plate (210), a receiving frame (220), a gunpowder tube (240), a bar (250), a rivet (c), a connecting plate (230), and a frame bolt (260). Through this configuration, when the ignition device connected to the gunpowder tube (240) is activated to detonate the gunpowder tube (240), the multiple bars (250) receive thrust toward the coupling frame (230), causing the rivet (c) to break. As the bar (250) moves toward the coupling frame (230) due to the breaking of the rivet (c), the wedge (261) of the frame bolt (260) is driven into the tapered hole (232) of the coupling frame (230), and the frame bolt (260) detaches from the wedge (261) and moves forward. In this way, the rivet (c) that was fixing the bar (250) and the receiving frame (220) is broken by the explosion of the gunpowder tube (240), and the connection is released. As the bar (250) applies thrust toward the connecting frame (230), force is applied in the left and right directions on the opposing surfaces (104, 105) of the left and right openings (102, 103), and force is applied upward from below the left and right openings (102, 103), thereby opening the left and right openings (102, 103). However, the existing nose fairing opening device had a problem in which the bar (250) and the combined frame (230) collided, causing a large separation impact that propagated to adjacent structures. In addition, due to the deviation in expansion force occurring between the receiving frame (220) and the bar (250), deviation occurs during the process of the rivet (c) breaking, and the bar (25) cannot move purely in translation and is accompanied by rotational movement, which can increase the separation shock and reduce the tendency. In addition, there was a problem in that the rebound of the bar (25)—that is, the phenomenon of moving in the direction of separation, hitting another structure, and then moving in the opposite direction—could occur, and at this time, due to the obstruction of the bar (250), there was a possibility of failure to separate the receiving frame (220) and the connecting frame (230) that are connected to each other. FIG. 1 shows a state in which a structure separation device according to one embodiment of the present invention is mounted on a structure connected to each other. Figure 2 shows the state in which the second frame in Figure 1 has been deleted. FIG. 3 is a drawing viewed in the direction A of FIG. 1, where FIG. 3 (a) shows a state in which the shock absorber is connected to the second frame by bonding, and FIG. 3 (b) shows a state in which the shock absorber is connected to the second frame by a fastener. FIG. 4(a) is a perspective view of the shock absorber, and FIG. 4(b) is a modified example of the shock absorber. FIG. 5 is a perspective view of the separation block (2) of the structure separation device of FIG. 1 viewed in the bottom direction. Figure 6 shows a conventional structural separation device. Hereinafter, embodiments of the present invention are described in detail with reference to the attached drawings so that those skilled in the art can implement the invention. However, the