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A calculation method of electromagnetic interference(EMI) margin of spacecraft wireless system is analyzed and researched in this paper, meanwhile the EMI margin is simulated and calculated. The electromagnetic compatibility (EMC) of wireless system is prognosed for a couple of wireless equipment which indicate that there is a risk of EMI among this couple of wireless equipment. According to the simulation results, a series of EMC test including tabletop dispersedly test and comprehensive test has been implemented to verify the prediction method. The test results indicate that there is EMI phenomenon among this couple of wireless equipment which support the accuracy of the prediction method. Combined with simulation and test results, a method for spacecraft wireless system EMC prediction has been proposed. The method will reduce the EMI problem in spacecraft development process and be benefit to subsequent maintenance.

In recent years, a novel electro-hydraulic integrated self-powered brake system for aircraft has been proposed. A modular “self-powered device” is installed near the wheel to recover the rotational kinetic energy when the wheel lands and convert it into hydraulic energy for braking. The energy conversion device is the compact high-power-weight ratio energy harvesting mechanism, which needs to be designed in the extremely narrow internal space of the wheel. At the same time to ensure high reliability, high strength, high power weight ratio, difficult, and wheel brake disc internal temperature reaches 600 °C above, this to the design of the can take institutions are challenges. In this paper, the high strength compact high power-weight ratio energy conversion device as the research goal, through new principles, new structure, new materials, new technology, new methods and other means of the energy taking mechanism design and development, and finally achieve the strength, stiffness, reliability, life of the energy conversion device to meet the requirements of the system.

Igneous rocks have the characteristics of “diversification of eruption mode, diversification of lithologic origin and multiple changes of mineral assemblages ", so it is difficult to identify fine. This study is based on a real case study of igneous carboniferous reservoir in Jinlong 10 block at Junggar basin. The distinguish of the reservoir-developed rocks are catalyzed to basalt, andesite, dacite, granite, tuff and volcanic breccia rock, based on a combination of core and thin sheet analysis data. Based on the characteristics of log response of different lithology, the basic basalt, neutral andesite and acidic granite are quickly distinguished by N-DP intersection map method, and the idea of “step by step stripping” is adopted in the interval, and tuff and volcanic breccia are identified by intersection map method. The results of lithology identification and the conclusion of core sheet analysis have a high degree of anastomosis, which effectively improves the accuracy of lithology identification.