| Integrated health management of aerospace plane generally involves a series of activities over the period from the aerospace breaking down until it returning to normal, including signal processing, monitoring, health assessment, decision support, human-computer interaction, and so on. This paper summarizes recent literature at home and abroad, to introduces the basic concept, the significance, and the main components of aerospace plane, the definition, composition and functions of the integrated health management system of aerospace plane, and the state-of-art health management for aerospace plane domestic and overseas. We also elaborate on the special experiment of the aerospace plane integrated health management system in US, Japan and Italia, and analyze each advantage and drawbacks as well as the main fault diagnosis methods of health management. And then, we predict the development tendency of future integrated health management system of aerospace plane.Furthermore, this paper proposes a double Fiber Bragg Grating (FBG) structure utilizing the method of decreasing the sensitivity to achieve to measure temperature and strain simultaneously, which solves the problem of temperature and strain’s cross sensitivity. The structure is simulated with Matlab when the temperature varies from 0 to 100℃and the strain from 0 to 500με. Meanwhile, based on the double-FBG structure, a strain sensor box model of aerospace plane is built so as to analyze the relationship between applied load and strain distribution. At last, when applied load equals 10N or 20N, strain distribution and effective refractive index changes are simulated. The results indicate that the simultaneous measurement of temperature and strain can be realized in the double-FBG structure, and the strain has a linear relationship with the applied load. According to the distribution of the strain, we can detect the fault of the aerospace plane’s fuel container and achieve its health monitor. |
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