Results 1 to 10 of about 248,209 (236)
Spacecraft charging and ion wake formation in the near-Sun environment [PDF]
Physics of Plasmas, 2010 A three-dimensional (3-D), self-consistent code is employed to solve for the static potential structure surrounding a spacecraft in a high photoelectron environment. The numerical solutions show that, under certain conditions, a spacecraft can take on a negative potential in spite of strong photoelectron currents.
David M Malaspina, F S Mozer, J R Wygant
exaly +6 more sources
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 +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 +5 more
doaj +1 more source
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 +7 more
doaj +1 more source
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 +10 more
doaj +1 more source
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 +6 more
doaj +1 more source
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 +5 more
doaj +1 more source
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 +6 more
doaj +1 more source
Radiation Effects from ISM and Cosmic Ray Particle Impacts on Relativistic Spacecraft [PDF]
, 2022 Relativistic spacecraft, like those proposed by the NASA Starlight program and the Breakthrough Starshot Initiative, will have to survive radiation production that is unique when compared to that experienced by conventional spacecraft. In a relativistic interstellar spacecraft's reference frame, the interstellar medium (ISM) will look like a nearly ...
arxiv +1 more source
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 +10 more
doaj +1 more source