CN202916887U

CN202916887U - Thermal protection flight parameter recorder

Info

Publication number: CN202916887U
Application number: CN 201220560425
Authority: CN
Inventors: 王景锋
Original assignee: Chengdu CAIC Electronics Co Ltd
Current assignee: Chengdu CAIC Electronics Co Ltd
Priority date: 2012-10-29
Filing date: 2012-10-29
Publication date: 2013-05-01
Anticipated expiration: 2022-10-29

Abstract

The utility model discloses a thermal protection flight parameter recorder which comprises a flight parameter recorder protection housing and a solid-state memory unit arranged in the protection housing, wherein the solid-state memory unit is encapsulated in the protection housing through paraffin. According to the characteristics of melting and heat absorbing of the paraffin, the memory unit of the flight parameter recorder is encapsulated through the paraffin with a specific melting point, so as to enhance the thermal protection capability of the flight parameter recorder, that is, when the flight parameter recorder is at a high temperature, the paraffin melts and absorbs heat to reduce the speed of temperature increase of the internal memory unit, so as to achieve the effect of improving the thermal protection capability of the flight parameter recorder. Meanwhile, when the flight parameter recorder receives an impact, the paraffin plays an impact energy buffering effect on electronic components of the memory unit, so as to improve the impact resistance of the flight parameter recorder to a certain extent.

Description

The thermal protection flight data recor der

Technical field

The utility model relates to a kind of instrument in order to multiple flying quality in the record-setting flight process.Especially strengthen the flight data recor der of thermal protection ability.

Background technology

Flight data recor der is the device of storage flight parameter on the aircraft, is commonly called as " black box ", is mounted on the aircraft, is used for helping investigation, maintenance and the flight apparatus for evaluating of aircraft incident.Flight data recor der generally has anticollision, puts extruding, anti-ly burn, the functions such as corrosion liquid soaks, anti-sea water immersion.Present domestic without the relevant speciality standard, the TSO-C124b flight data recording instrument system technical standard order of US Federal Aviation Administration the thermo-lag requirement of flight data recor der: it is in 1100 ℃ the flame at least 60 minutes that the whole surf zone of flight data recor der continues to be exposed to temperature, and flight data recor der is positioned over 260 ℃ lower 10 hours of temperature, and the data of its record should not be damaged.

In order to satisfy the specific (special) requirements of flight data recor der, flight data recor der generally is made of exterior protection housing and internal storage unit.Existing flight data recor der thermal protection measure generally is externally to carry out the thermal protection processing on the housing, comprises and adds thermally protective materials etc., does not process but internal storage unit is carried out thermal protection.Sometimes the thermal protection measure on the external shell can't meet the demands.

Summary of the invention

In order to overcome the deficiency of existing flight data recor der thermal protection ability, it is a kind of not only effective to thermal protection that the utility model provides, the thermal protection flight data recor der that the anticollision ability of flight data recor der is also improved,

The technical scheme that its technical matters that solves the utility model adopts is: the thermal protection flight data recor der, comprise a flight data recor der protective casing and be arranged on the interior solid-state storage unit of protective casing, it is characterized in that, the solid-state storage unit is potted in the protective casing by paraffin.

Of the present utility model have a following beneficial effect.

The utility model utilizes paraffin to melt the characteristics of heat absorption, anti-in the heat that its register internal storage unit applies, selecting the paraffin of specific fusing point to carry out embedding the storage unit of flight data recor der processes, the thermal protection ability of having strengthened flight data recor der makes it when standing high temperature, melt the absorption heat by paraffin, slow down the programming rate of internal storage unit, thereby reach the effect that improves flight data recor der thermal protection ability.Simultaneously when flight data recor der stood impact, paraffin had the effect of buffering collision of closed energy to the electronic devices and components of storage unit, and the anticollision ability of flight data recor der is also improved.The utility model is applicable to the storage unit that is made of printed wiring board and electronic devices and components.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is embedding schematic diagram of the present utility model.

Among the figure: 1 vacuum tank, 2 glass beakers, 3 solid-state storage unit, 4 printed circuit boards and electronic devices and components, 5 liquid paraffins.

Embodiment

In following examples, the protection flight data recor der comprises a flight data recor der protective casing and is arranged on the interior flight data recorder solid-state storage unit 3 of protective casing that the solid-state storage unit 3 in the vacuum tank 1 is melted the paraffin embedding.During embedding paraffin, select fusing point high but do not damage the paraffin of electronic devices and components, paraffin melting point is advisable with the highest storing temperature of the electronic devices and components that use a little less than storage unit.Use the paraffin of the specific fusing point of high-temperature cabinet heating and melting, with the air in the vacuum tank extraction liquid paraffin, the flight data recor der internal storage unit is put into vasoliniment carry out embedding, extract the storage unit inner air out with vacuum tank, make paraffin pour into the inner slit of full storage unit fully.The required paraffin of embedding is positioned in the glass beaker 2, paraffin in 1 pair of beaker of vacuum tank with high temperature constant temperature function is heated, paraffin is melted in little temperature that is higher than fusing point, the flight data recor der internal storage unit 3 of prior preheating is put into liquid paraffin 5, allow liquid paraffin 5 flow in the solid-state storage unit 3, with the mode that vacuumizes, make paraffin fill up the printed circuit board of solid-state storage unit and the space in the electronic devices and components 4 fully.This process keeps a period of time, generally keeps 5～10 minutes.With the mode that vacuumizes with the Bas Discharged in the liquid paraffin.Pressure in the vacuum tank is adjusted to atmospheric pressure, stopped heating, after liquid paraffin cooling, with embedding the internal storage unit of paraffin from beaker, take out, be installed in the flight data recor der exterior protection housing.

By above measure, strengthened the thermal protection ability of flight data recor der.Simultaneously when flight data recor der stood impact, paraffin had the effect of buffering collision of closed energy to the electronic devices and components of storage unit, and the anticollision ability of flight data recor der is also improved.

Claims

1. thermal protection flight data recor der, comprise a flight data recor der protective casing and be arranged on the interior solid-state storage unit of protective casing, the solid-state storage unit is melted paraffin and is potted in the protective casing, it is characterized in that, the solid-state storage unit is potted in the protective casing by paraffin.