4 Art�culos

Lifetime Extension of Ultra Low-Altitude Lunar Spacecraft with Low-Thrust Propulsion System

Acceso

en l�nea

Jingxi Liu, Bo Xu, Chengzhang Li and Muzi Li

Due to the non-spherical perturbation of the Moon, the lifetime of ultra low-altitude Lunar spacecraft may be quite short. In this paper, we analyze the lifetime of about 50 km-altitude Lunar spacecraft with different initial orbit. The lifetime in low i... ver m�s

Revista: Aerospace Formato: Electr�nico

Tabla de contenido: Vol: 9 Num: 0 Par: 6 A�o: 2022

A 3D Discrete-Continuum Coupling Approach for Investigating the Deformation and Failure Mechanism of Tunnels across an Active Fault: A Case Study of Xianglushan Tunnel

Acceso

en l�nea

Yalina Ma, Qian Sheng, Guimin Zhang and Zhen Cui

For water transmission tunnels constructed in high-risk seismic regions of western China, active faults pose threats of serious ruptures to the tunnels. To overcome this issue, a 3D discrete-continuum coupling approach is introduced into the study. By th... ver m�s

Revista: Applied Sciences Formato: Electr�nico

Tabla de contenido: Vol: 9 Num: 0 Par: 11 A�o: 2019

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