Results 11 to 20 of about 271,699 (362)

Spacecraft Floating Potential Measurements for the Wind Spacecraft

open access: yesThe Astrophysical Journal Supplement Series, 2023
Abstract Analysis of 8,804,545 electron velocity distribution functions, observed by the Wind spacecraft near 1 au between 2005 January 1 and 2022 January 1, was performed to determine the spacecraft floating potential, ϕ sc. Wind was designed to be electrostatically clean, which helps keep the magnitude of ϕ
Lynn B. Wilson III   +2 more
openaire   +2 more sources

Safety Design for the China Space Station

open access: yesSpace: Science & Technology, 2023
The safety of a space station under normal and abnormal conditions can be ensured only by comprehensively identifying various hazards of the space station during its whole mission cycle and formulating control measures against each hazard.
Wei Li   +5 more
doaj   +1 more source

Research on Sand-dust Separation Technology Based on Gas-solid Two-phase Numerical Simulation [PDF]

open access: yesE3S Web of Conferences, 2020
The separation technology in the large-scale sand-dust environment ground simulation test system applicable to the environmental adaptability and reliability verification of aerospace electromechanical products is studied.
Zhang Lei, Wang Junwei, Li Guohua
doaj   +1 more source

Azimuthal repositioning of payloads in heliocentric orbit using solar sails [PDF]

open access: yes, 2003
FUTURE solar physics missions will require the ability to reposition multiple spacecraft at different azimuthal positions relative to the Earth, while remaining close to a one year circular orbit.
McInnes, Colin R.
core   +1 more source

Mechanical analysis and verification of the large-scale rack structure about the zero-gravity test of manipulator of the space station

open access: yesThe 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   +4 more
doaj   +1 more source

Researching a Moving Target Detection Method Based on Magnetic Flux Induction Technology

open access: yesMetals, 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   +10 more
doaj   +1 more source

Multi-function array SAR system on a spaceborne dual platform

open access: yesThe 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   +4 more
doaj   +1 more source

On-orbit Space Technology Experiment and Verification Project Outlook of China’s Tiangong Space Station

open access: yesSpace: Science & Technology, 2023
China’s Tiangong space station has been completed in 2022 to support large-scale multidisciplinary space science research and technology experiments. With a large payload capacity and long operating time, Tiangong space station has many irreplaceable ...
Zhao Yin   +5 more
doaj   +1 more source

Large aperture scanning membrane phased array antenna for geosynchronous Earth orbit synthetic aperture radar applications

open access: yesThe Journal of Engineering, 2019
A large aperture membrane phased array antenna with an array antenna and transmit/receive (T/R) modules is presented for geosynchronous Earth orbit synthetic aperture radar applications.
Mingming Xu   +5 more
doaj   +1 more source

Precise Model for Small-Body Thermal Radiation Pressure Acting on Spacecraft [PDF]

open access: yes, 2017
A precise representation of small-body surface thermal radiation pressure effects acting on orbiting spacecraft is discussed. The proposed framework takes advantage of a general Fourier series expansion to compute small-body surface thermal radiation ...
Hesar, Siamak G.   +3 more
core   +1 more source

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