Results 1 to 10 of about 60,625 (298)

Research of Materials and Manufacturing Technology System for On-orbit Manufacturing [PDF]

E3S Web of Conferences, 2023
On-orbit manufacturing is affected by space microgravity, high vacuum, large temperature variation, strong radiation and other environmental factors, which also puts forward new requirements for materials and process methods suitable for on-orbit ...
Jiayong Yan, Baorong Liu, Kai Yang, Hanliang Liu, Bin Zhang, Lixin Zhang, Cunyi Wang   +6 more
doaj   +1 more source

Research on detection method of leakage rate of rough pumping valve in space environment simulator [PDF]

E3S Web of Conferences, 2020
As an important part of the vacuum system in the space environment simulator, the rough pumping system reduces the vacuum degree of the container from atmospheric pressure to the pressure of the high vacuum system when the space environment simulator ...
Yue Wu, Qingliang Guo, Mingyuan Fang, Juan Sun, Ziyin Guo, Xi Wei   +5 more
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Development of an X-Band Reflectarray Antenna for Satellite Communications

Scientific Reports, 2021
An X-band reflectarray antenna using 16 × 12 double square ring elements for satellite communications is proposed in this paper. The feed is a 4 × 3 elements microstrip patch array designed to create edge taper of approximately − 10 dB.
Bing Ma, Fan Lu, Guoping Zhi, Xin Xue, Xiangni Zhao, Chao Ma, Yong Fan, Mei Yang   +7 more
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Design and validation of a space plasma environment detector for BeiDou navigation satellite

Open Astronomy, 2023
Most of the satellites of the BeiDou navigation system work in geostationary orbit (GEO) and medium earth orbit (MEO), where the space plasma environment can make a severe impact on spacecraft.
Tang Zhenyu, Ren Qiongying, Li Hao, Peng Yuchuan, Peng Zhong, Liu Qinghai, Wang Junfeng, Liu Yenan, Ge Lili, Wu Da, Zhao Hua   +10 more
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MISSION PROFILE AND DESIGN CHALLENGES FOR MARS LANDING EXPLORATION [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017
An orbiter and a descent module will be delivered to Mars in the Chinese first Mars exploration mission. The descent module is composed of a landing platform and a rover.
J. Dong, Z. Sun, W. Rao, Y. Jia, L. Meng, C. Wang, B. Chen   +6 more
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A multi‐frequency high‐gain GNSS array antenna for asteroid sampling return

IET Microwaves, Antennas & Propagation, 2022
An almost all‐metal L band multi‐frequency high‐gain GNSS array antenna for an asteroid sampling return mission has been developed for orbit determination.
Zhijia Liu, Fan Lu, Jiangnian Duan, Yuhan Huang, Dayuan Sun, Yinlong Sun   +5 more
doaj   +1 more source

Research and Verification of Key Techniques in the Simulation of Space Extremely Rapid Decompression in Millisecond

International Journal of Aerospace Engineering, 2021
The research of rapid decompression with its effect assessment and protection technology is the problem that must be faced by the future exploration projects such as near space exploration, deep space exploration, and long-term lunar or Mars base.
Junwei Wang, Lei Zhang, Guohua Li, Ran Liu, Juan Ning, Xiao Han, Xin He   +6 more
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Researching a Moving Target Detection Method Based on Magnetic Flux Induction Technology

Metals, 2021
The ocean is a very important arena in modern warfare where all marine powers deploy their military forces. Due to the complex environment of the ocean, underwater equipment has become a very threatening means of surprise attack in modern warfare ...
Chaoqun Xu, Li Yang, Kui Huang, Yang Gao, Shaohua Zhang, Yuting Gao, Lifei Meng, Qi Xiao, Chaobo Liu, Bin Wang, Zhong Yi   +10 more
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Mechanical analysis and verification of the large-scale rack structure about the zero-gravity test of manipulator of the space station

The Journal of Engineering, 2018
In this article, the mechanical properties of large-scale rack structures are analysed by MSC Marc analysis software is verified through the modal test.
Hailin Dai, Chengli Zhang, Fanwei Meng, Shaohua Meng, Feng Gao   +4 more
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Multi-function array SAR system on a spaceborne dual platform

The Journal of Engineering, 2019
This study proposes a sparse linear array synthetic aperture radar (LASAR) on a spaceborne dual platform. The transmitting elements are placed at the LASAR tips that form a satellite's dual platform, and the receiving elements are placed on the large ...
Dehua He, Qingjun Zhang, Yu Zhu, Bingji Zhao, Qiuhong Lin   +4 more
doaj   +1 more source