Jifei Ye

A Simulation and Experimental Study of the Current Contact Notch Structure on the Fracture Capacity of Pyro-Breakers

Jifei Ye, Guanghong Wang, Hua Li, Zhiquan Song et autres

The current contact of pyro-breakers must rapidly interrupt current when the superconducting magnet loses its superconductivity. To enhance the microsecond-scale current-breaking capability of pyro-breakers in nuclear fusion devices, this study investigates the impact of current contact notch structures on dynamic fracture behavior. …

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Simulation and experimental analysis of 100 kA pyro-breaker

Jifei Ye, Guanghong Wang, Hua Li, Zhiquan Song et autres

The current contact in the pyro-breaker plays a critical role in enabling rapid circuit interruption and establishing short-term insulation, with its performance directly impacting the safety and reliability of the quench protection system. In this study, a comprehensive research approach combining multi-physics …

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Simulation and Experimental Study of Current Contact Notch Structure on the Fracture Capacity of Pyro-Breaker

Jifei Ye, Guanghong Wang, Hua Li, Zhiquan Song et autres

The current contact of pyro-breaker must rapidly interrupt current when the superconducting magnet loses its superconductivity. To enhance the microsecond-scale current-breaking capability of pyro-breaker in nuclear fusion devices, this study investigates the impact of current contact notch structures on dynamic fracture behavior. …

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Investigation of the impact of BN/graphite composite nozzles on arcjet thruster performance

Yong Wang, Yongjie Ding, Jifei Ye

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A high-precision impulsive force calibration method for the micro-thrust measurement system

Haichao Cui, Bangdeng Du, Jifei Ye, X. S. Li et autres

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Optical excitation of metastable krypton using a long-lifetime vacuum ultraviolet lamp

Jianwei Liang, Gaoping Feng, Shandong Qi, Weisheng Xu et autres

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A high-precision measurement method for moment of inertia based on torsion pendulum method

Haichao Cui, Yanji Hong, Baosheng Du, Jianhui Han et autres

Abstract The precise determination of moment of inertia (MOI) holds paramount importance in investigating the rotational dynamics of an object. Based on the torsion pendulum system, a novel high-precision measurement method for MOI is developed by using the constant force in this …

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Optical Excitation of Metastable Krypton Using a Long-Lifetime Vacuum Ultraviolet Lamp

Jianwei Liang, Gaoping Feng, Shandong Qi, Weisheng Xu et autres

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Configurations and Key Issues of Low Thrust Measurement for Microspacecrafts

Weijing Zhou, Jifei Ye, Nan-lei Li, Hao Chang

Microthrusters on microspacecrafts are of interest and its output thrust must be characterized for a particular applicaton. The technology of micro thrust measurement can evaluate the performance of microthrusters. The measurement principles of steady-state thrust, pulse impulse, average thrust and instantaneous thrust …

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Interaction of single-pulse laser energy with bow shock in hypersonic flow

Yanji Hong, Diankai Wang, Qian Li, Jifei Ye

Pressure sensing and schlieren imaging with high resolution and sensitivity are applied to the study of the interaction of single-pulse laser energy with bow shock at Mach 5. An Nd:YAG laser operated at 1.06 μm, 100 mJ pulse energy is used to …

Study on High Speed Schlieren Measurement Method for Laser induced LSD Wave Evolvement

Jifei Ye, Wen Ming, Guanlei Jiang, Wentang Wu

The application of High-speed schlieren technology in flow field evolvement diagnosis of laser induced LSD wave is presented. Schlieren technology is improved to investigate the fast and self-luminescent flow field evolvement. Nanosecond magnitude and suitable light exposure could be obtained at the …

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