Results 41 to 50 of about 6,017 (50)

4D printing and its key technologies

Cailiao gongcheng, 2019
4D printing can be defined as the evolution of 3D printing structure in terms of shape, performance and function. It has time dependence, printer independence and predictability, and its smart dynamic performance creates promising capabilities and broad ...
SHEN Zi-cai, XIA Yan, DING Yi-gang, ZHAO Chun-qing, YANG Yan-bin   +4 more
doaj   +1 more source

Numerical Study of the Thermal Model on High Uniformity Temperature Test Platform

MATEC Web of Conferences, 2019
The surface temperature uniformity of a test platform with an effective test area of 600 mm × 600 mm was numerically studied. The conductive heat transfer model for the test platform and the device under test (DUT) installed on the surface was ...
Wang Zijuan, Zhou Ying, Xiao Han, Jingyi Shao   +3 more
doaj   +1 more source

Performance Prediction of Hatch Cover Drive Assembly in Space Environment

IEEE Access, 2019
The performance of the Hatch Cover Drive Assembly operated in space is quite important for aircrafts. However, it is hard to experimental studies in space.
Pan Bo, Chi Cheng, He Yongqiang, Zhang Shuyang, Zhang Puzhen, Zhang Donghua, Chi Guanxin   +6 more
doaj   +1 more source

Spacecraft Assembly Process Bill of Material Construction Technology For Single-Piece Production

MATEC Web of Conferences, 2017
For the spacecraft assembly Process Bill of Material (PBOM) traditional construction technology, the product assembly relationship, product assembly information are not visual for spacecraft assembly and integration department, leading to the manual PBOM
He Wen-xing, Chen Chang-yu, Liu Yu-gang
doaj   +1 more source

Design of drive control for digital transmission relay antenna based on FPGA miniaturization

Dianzi Jishu Yingyong, 2019
In order to meet the requirements of spacecraft miniaturization design, a single chip anti-fuse FPGA is used as main control chip for driving relay antenna.
Hou Chao, Zheng Yue, Yao Weilin, Wang Tao   +3 more
doaj   +1 more source

Unambiguous signal reconstruction for GEO-LEO bistatic SAR with azimuth multichannel

The Journal of Engineering, 2019
Spaceborne bistatic multichannel synthetic aperture radar (MC-SAR) system employed inclined geosynchronous Earth orbit (GEO) transmitter and low-Earth-orbit (LEO) receiver can provide fine spatial resolution and a vast area of surveillance, which ...
Yuekun Wang, Zheng Lu, Mingming Xu, Yu Zhu, Zhenfang Li   +4 more
doaj   +1 more source

Numerical Calculation of Gas–Liquid Two-Phase Flow in Tesla Valve

Aerospace
In this paper, the gas–liquid two-phase flow within a Tesla valve under zero-gravity conditions is numerically studied. Based on the VOF model and the inlet two-phase separation method, the forward and reverse flow patterns and pressure drop changes in a
Jie Gong, Guohua Li, Ran Liu, Zijuan Wang   +3 more
doaj   +1 more source

Simulation of Helical-Baffle Inlet Structure Cyclone Separator

Separations
In developing spacecraft dust environment testing equipment, cyclone separators serve as critical particulate separation devices. To optimize cyclone performance, this study investigates the impact of inlet configurations on internal flow fields.
Guohua Li, Jie Gong, Zijuan Wang, Ran Liu   +3 more
doaj   +1 more source

Deep Analysis of Imaging Characteristics of Spaceborne SAR Systems as Affected by Antennas Using 3D Antenna Pattern

Sensors
Spaceborne Synthetic Aperture Radar (SAR) has become an indispensable tool for environmental monitoring, offering all-weather, day-and-night imaging capabilities.
Wei Shi, Heqing Huang, Wenjun Gao, Huaian Zhou, Hua Jiang   +4 more
doaj   +1 more source

Effect of vacuum and air heat treatments on the properties of the electroless Ni−P coating on magnesium alloy

Materials Research Express
Electroless Ni−P coatings on magnesium alloy specimens were heat-treated in vacuum and air atmospheres at 200 °C, 250 °C, and 300 °C. The results showed that the coating grains evolved into fine nodular structures following heat treatment at 200 °C and ...
Sizhen Li, Jinhua Yu, Yan Zheng, Yeshen Qin, Lianjing Zhao, Li Feng, Yunyan Liu, Jingying Bai, Qingxin Cui, Ligong Zhang, Jiaqiang Zhang, Haoran Sun   +11 more
doaj   +1 more source