Study on the effect of water on electromagnetic radiation characteristics of fractured sandstone under load

2021 ◽  
Vol 80 (3) ◽  
Author(s):  
Rongxi Shen ◽  
Taixun Li ◽  
Hongru Li ◽  
Shun He ◽  
Enlai Zhao ◽  
...  
Keyword(s):  
Electromagnetic Radiation ◽  
Radiation Characteristics ◽  
Effect Of Water ◽  
Fractured Sandstone

scholarly journals Study on Electromagnetic Radiation Interference Caused by Rocket Fuel

2021 ◽  
Author(s):  
Yuanbo Cui ◽  
Deren Kong ◽  
Jian Jiang ◽  
Shang Gao ◽  
Shuai Wang
Keyword(s):  
Data Analysis ◽  
Electromagnetic Radiation ◽  
Time Domain ◽  
Electromagnetic Compatibility ◽  
Electronic Equipment ◽  
Radiation Measurement ◽  
Rocket Fuel ◽  
Radiation Characteristics ◽  
Characterization Model ◽  
Energy Domain

During the launch and return of a spacecraft, the intense combustion of propellants generates strong electromagnetic radiation, which interferes with the operation of electronic equipment in the spacecraft. To improve the electromagnetic compatibility of electronic equipment in spacecraft, it is necessary to study the electromagnetic radiation characteristics of rocket fuel. An electromagnetic radiation measurement system based on antennas is designed to measure the electromagnetic radiation generated by rocket fuel, and the electromagnetic radiation characteristics are obtained through data analysis. The mechanism of the electromagnetic radiation generated by rocket fuel is comprehensively analysed through the spatial, time-domain, frequency-domain, and energy-domain characteristics. A characterization model is established to provide a reliable scheme for evaluating the influence of rocket fuel electromagnetic radiation on electronic equipment in spacecraft.

scholarly journals Study on Electromagnetic Radiation Interference Caused by Rocket Fuel

2021 ◽  
Author(s):  
Yuanbo Cui ◽  
Deren Kong ◽  
Jian Jiang ◽  
Shang Gao ◽  
Shuai Wang
Keyword(s):  
Data Analysis ◽  
Electromagnetic Radiation ◽  
Time Domain ◽  
Electromagnetic Compatibility ◽  
Electronic Equipment ◽  
Radiation Measurement ◽  
Rocket Fuel ◽  
Radiation Characteristics ◽  
Characterization Model ◽  
Energy Domain

Abstract During the launch and return of a spacecraft, the intense combustion of propellants generates strong electromagnetic radiation, which interferes with the operation of electronic equipment in the spacecraft. To improve the electromagnetic compatibility of electronic equipment in spacecraft, it is necessary to study the electromagnetic radiation characteristics of rocket fuel. An electromagnetic radiation measurement system based on antennas is designed to measure the electromagnetic radiation generated by rocket fuel, and the electromagnetic radiation characteristics are obtained through data analysis. The mechanism of the electromagnetic radiation generated by rocket fuel is comprehensively analysed through the spatial, time-domain, frequency-domain, and energy-domain characteristics. A characterization model is established to provide a reliable scheme for evaluating the influence of rocket fuel electromagnetic radiation on electronic equipment in spacecraft.

Characters of Electromagnetic Radiation in Coal and its Application in Forecast of Coal and Gas Outburst

2014 ◽  
Vol 962-965 ◽  
pp. 1051-1055 ◽  
Author(s):  
Wen Cai Wang ◽  
Hui Zhao ◽  
Hong Yu Zhao ◽  
Qing Tian Zhang
Keyword(s):  
Electromagnetic Radiation ◽  
Radiation Intensity ◽  
Correlation Equation ◽  
Coal And Gas Outburst ◽  
Initial Speed ◽  
Gas Emission ◽  
Radiation Characteristics ◽  
Positive Correlation ◽  
Loading Process ◽  
Gas Outburst

The coal can produce electromagnetic radiation when it is in the loading process. The electromagnetic radiation characteristics testing to the sample in the process of uniaxial compression failure in the lab shows that loading stress and the strength of electromagnetic radiation, the number of electromagnetic radiation pulse, the number of acoustic emission pulse are positively correlated relationship when it is in the loading process. They usually have a good corresponding relationship with each other, but are not completely synchronization. They test the corresponding relationship between the electromagnetic radiation intensity of coal and main parameters gas emission initial speed of traditional prediction of coal and gas outburst borehole and amount of drilling cuttings. The results show that the electromagnetic radiation intensity and gas emission initial speed of borehole and amount of drilling cuttings have a positive correlation, and the linear positive correlation equation is obtained. Thus it can be seen, electromagnetic radiation characteristics can be used for predicting the outburst of coal and gas.

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