The invention relates to methods and systems for detecting leakage in a thermal protection apparatus using a liquid crystal sheet. In an example, the method of inspecting a thermal protection apparatus is described. The apparatus comprises a composite wall and a thermal insulation blanket, where the thermal insulation blanket is coupled to the wall by way of a sealant disposed around, and offset from, a perimeter of the composite wall and disposed between the composite wall and the thermal insulation blanket, and where the wall, the thermal insulation blanket, and the sealant form a plenum chamber within the apparatus. The method includes pressurizing the plenum chamber with pressurized air, heating the pressurized air within the plenum chamber, and inserting a liquid crystal sheet betweenthe wall and the thermal insulation blanket and proximate to a periphery of the sealant, where the liquid crystal sheet is configured to change color when heated pressurized air exits a gap in the apparatus and heats the liquid crystal sheet.

    本申请涉及使用液晶片检测热保护装置中的泄漏的方法和系统,并且在示例中描述了检查热保护装置的方法。该装置包括复合壁和隔热毯,其中隔热毯通过密封剂耦接到壁,密封剂设置在复合壁的周边周围并从复合壁的周边偏移并设置在复合壁和隔热毯之间,并且其中壁、隔热毯和密封剂在装置内形成充气室。该方法包括用加压空气对充气室加压,加热充气室内的加压空气,以及将液晶片插入壁和隔热毯之间并靠近密封剂的周边,其中液晶片被配置为当加热的加压空气离开装置中的间隙并加热液晶片时改变颜色。


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    Title :

    Methods And Systems For Detecting Leakage In A Thermal Protection Apparatus Using A Liquid Crystal Sheet


    Additional title:

    使用液晶片检测热保护装置中的泄漏的方法和系统


    Contributors:

    Publication date :

    2020-04-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G01V Geophysik , GEOPHYSICS / B64F GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT , Boden- oder Flugzeugträgerdeckeinrichtungen besonders ausgebildet für die Verwendung in Verbindung mit Luftfahrzeugen



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