KR100668803B1 - Crash survival memory unit for black box - Google Patents

Abstract

An information protection module of a black box is provided to safely protect the module from the explosion or impact by uniformly distributing the outer pressure through the cylindrical housing. An information protection module(100) of a black box comprises a cylindrical housing(110) formed with a receiving space inside; an opening and closing cover(120) placed at the front of the housing to open and close the housing; a flash memory placed at the receiving space of the housing to store the flight data record; and a heat absorbing body installed in the housing to absorb the heat transferred to the flash memory. A gasket is placed between the housing and the opening and closing cover to prevent the phase change material from being leaked to the outside of the housing.

Description

Crash survival memory unit for black box

1 is a front perspective view of a data protection module of a black box according to an embodiment of the present invention;

Figure 2 is a rear perspective view of the data protection module of the black box shown in Figure 1,

3 is a cross-sectional view taken along line III-III of the data protection module of the black box shown in FIG.

4 is a cross-sectional view of the data protection module of the black box shown in FIG. 1 taken along line IV-IV.

<Explanation of symbols for the main parts of the drawings>

100 ... black box data protection module 110 ... housing

120.Opening / closing cover 121 ... High strength bolt

130 ... signal generator 140 ... heat absorber

150 ... insulation 160 ... flash memory

170 ... gasket

The present invention relates to a black box, and more particularly, to a data protection module of a black box that significantly lowers the risk of damage to a flash memory in which a flight log is stored.

In general, a black box is a device that is mounted on an aircraft and automatically records the movement of an aircraft or an impact received from the outside, and is also called a flight data recorder (FDR). If an accident occurs in the aircraft, the cause of the accident of the aircraft is analyzed using the data recorded in the black box.

Therefore, the black box records the minimum data necessary for clarifying the flight status of the accident machine, such as altitude, air speed, nose bearing, vertical acceleration and time. These data are engraved with diamond needles on thin stainless steel tapes. Altitude, airspeed, and heading in flight are typically recorded once per second and vertical acceleration is recorded ten times per second. The stainless tape is 5 inches wide and 200 feet long and is sent at a speed of 6 inches per hour, with 400 hours of data recorded on one side.

Aircraft accidents usually involve heavy shocks and fires, so the black box is typically designed to withstand 30 minutes at 1,100 ° C, 0.011 seconds to 1,000G of impact, and at least 48 hours in seawater or jet fuel.

However, as the development of the aircraft has been advanced and the system has been complicated, it has become difficult to explain the cause of the accident with the data recorded on the stainless tape alone. Therefore, a black box using a flash memory, that is, a digital flight data recorder (DFDR) is currently used.

The digital airplane lock device is required to record 19 kinds of data such as the attitude of the aircraft, the movement of the control blades, the thrust situation of each engine, and the transmission status of VHF and HF communication. Therefore, it becomes possible to identify the more accurate cause at the time of an aircraft accident.

However, there is a problem that a flash memory in which important records are stored as described above is easily damaged by high temperature or high pressure. In other words, if the black box is exposed to high temperature or high pressure generated during an aircraft accident for a long time, the flash memory storing the flight log data may be easily damaged.

The present invention was devised to solve the above problems, and an object thereof is to provide a data protection module of a black box which can prevent damage to a flash memory due to high temperature or high pressure.

Other objects and advantages of the invention will be described below and will be appreciated by the embodiments of the invention. In addition, the objects and advantages of the invention may be realized by the means and combinations indicated in the claims.

Data protection module of the black box of the present invention for achieving the above object is a cylindrical housing formed with a receiving space therein; An opening and closing cover positioned on a front surface of the housing to open and close the housing; A flash memory located in an accommodation space of the housing and storing an airplane lock; And a heat absorber positioned on an inner surface of the housing to absorb heat transferred to the flash memory.

In addition, the heat absorber is preferably a phase change material.

In addition, the gasket may further include a gasket positioned between the housing and the opening / closing cover to prevent the phase change material from flowing out of the housing.

In addition, it is preferable to further include a heat insulator positioned between the housing and the heat absorber to block the transfer of heat.

Moreover, the insulation can be epoxy coated.

In addition, the phase change material is preferably any one of Sodium Bicarbonate, Astorstat6920, RT80, RT100.

In addition, the housing or the opening and closing cover may be a titanium alloy.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the present specification and claims should not be construed as being limited to the common or dictionary meanings, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that it can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

1 is a front perspective view of the data protection module of the black box according to an embodiment of the present invention, Figure 2 is a rear perspective view of the data protection module of the black box shown in Figure 1, Figure 3 is a black shown in Figure 1 4 is a cross-sectional view taken along line III-III of the data protection module of the box, and FIG. 4 is a cross-sectional view taken along line IV-IV of the data protection module of the black box shown in FIG.

1 to 4, the data protection module 100 of the black box according to an embodiment of the present invention includes a housing 110, an opening and closing cover 120, a signal generator 130, a heat absorber 140, and a heat insulating material. 150, flash memory 160, and gasket 170.

The housing 110 is preferably in the form of a cylinder having a receiving space therein. Since the cylindrical shape can evenly distribute and support the pressure from the outside, the housing 110 is not easily damaged even in a high pressure environment caused by an explosion or the like.

In the internal storage space of the housing 110, a flash memory 160 in which various flight logs are stored is located.

The flash memory 160 is a very efficient storage medium for storing an airplane log that needs to be erased and written new data because the writing and erasing process is very fast and simple. In addition, a large amount of data can be stored to store a large number of flight records. Therefore, more accurate analysis is possible in the event of an aircraft accident.

However, the flash memory 160 as described above has a problem in that it is easily damaged by high pressure and high temperature due to its weak durability.

In order to solve the above problems, the heat absorber 140 is positioned on the inner wall surface of the housing 110 to absorb heat transferred from the outside of the housing 110 to the flash memory 160.

Here, a phase change material is used as the heat absorber 140. Phase change material refers to a material that changes from solid to liquid or from liquid to gas at a specific temperature without a change in temperature. Phase change materials also absorb or release a lot of heat as the phase changes.

That is, it is possible to maintain the inside of the housing 110 at a constant temperature for a long time by using the phase change material as the heat absorber 140 that absorbs the heat transferred to the flash memory 160.

In other words, when the internal temperature of the housing 110 rises, the phase change material in the solid state changes to a liquid state and absorbs the surrounding heat, thereby maintaining the internal temperature of the housing 110 constant.

Sodium Bicarbonate, Astorstat6920, RT80, RT100, etc. are used as the phase change material. However, it is not limited thereto.

In addition, the insulating member 140 is installed between the housing 110 and the heat absorber 140 to primarily block heat transmitted from the outside of the housing 110 to the inside.

Here, the heat insulating material 140 may be manufactured using a heat insulating material of Microtherm Corporation, and the heat insulating material 140 is treated with an epoxy coating to prevent dust generated during assembly and handling. In addition, it is preferable to use RVT170 adhesive of Dowcorning Co., Ltd. for coupling the heat insulating material 140 and the housing 110, but is not limited thereto.

The opening and closing cover 120 is located on the front of the housing 110 to enable the opening and closing of the housing 110, it is coupled to the housing 110 by a high-strength bolt. Here, the opening and closing cover 120 is the same material as the housing 110, the material of the housing 110 and the opening and closing cover 120 is preferably a titanium alloy. The titanium alloy used in one embodiment of the present invention is Ti-6Al-4V.

In addition, the gasket 170 is installed in the coupling portion of the opening and closing cover 120 and the housing 110 in order to increase the sealing property of the opening and closing cover 120 and the housing 110.

Accordingly, when the opening and closing cover 120 is coupled to the housing 110, the housing 110 may be sealed to prevent the phase change material, which is a heat absorber 140, from leaking out of the housing 110. . In addition, when the housing 110 is exposed to water or jet fuel, it is possible to prevent foreign matter from penetrating into the housing 110.

In addition, a high strength bolt 121 is used to couple the opening and closing cover 120 and the housing 110.

In addition, the signal generator 130 is fixedly coupled to the rear of the housing 110, the location of the data protection module 100 of the black box when the data protection module 100 of the black box is lost due to an aircraft accident occurs. Generates a tracking signal to track.

According to the data protection module of the black box of the present invention, by applying a phase change material that absorbs heat as the phase changes to the data protection module of the black box to protect the flash memory stored in the plane record from the high temperature due to the fire caused in the event of an aircraft accident You can do it.

 In addition, the data protection module of the black box of the present invention is to evenly distribute the external pressure through the cylindrical housing to prevent the data protection module of the black box from being damaged due to explosion or shock generated during an aircraft accident. Can be.

As mentioned above, although this invention was demonstrated by the limited embodiment, this invention is not limited by this and it will be described below by the person of ordinary skill in the art, and the following. Of course, various modifications and variations are possible within the scope of the claims.

Claims (7)

A cylindrical housing having an accommodation space formed therein; An opening and closing cover positioned on a front surface of the housing to open and close the housing; A flash memory located in an accommodation space of the housing and storing a flight log; And And a heat absorber positioned on an inner surface of the housing to absorb heat transferred to the flash memory. The method of claim 1, The heat absorber is a data protection module of the black box, characterized in that the phase change material. The method of claim 2, Located between the housing and the opening and closing cover, the data protection module of the black box, characterized in that it further comprises a gasket to prevent the phase change material to flow out of the housing. The method of claim 3, wherein The data protection module of the black box, characterized in that it further comprises a heat insulating material located between the housing and the heat absorber to block the transfer of heat. The method of claim 4, wherein the heat insulating material, Black box data protection module, characterized in that the coating. The method of claim 5, wherein the phase change material, Data protection module of a black box, characterized in that any one of Sodium Bicarbonate, Astorstat6920, RT80, RT100. The method of claim 6, wherein the housing or the opening and closing cover, Black box data protection module, characterized in that the titanium alloy.

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