Results 81 to 90 of about 186,008 (265)
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 +3 more
doaj +1 more source
Effects of Galactic Irradiation on Thermal and Electronic Transport in Tungsten
physica status solidi (b), EarlyView.This atomic‐scale study reveals how low‐to‐mid‐energy space irradiation alters tungsten's thermal and electronic behavior, even at low defect levels. Focusing on vacancy sites in bulk and near grain boundaries, it employs two novel approaches: site‐projected thermal conductivity and the N2$^{2}$ method for the thermal and electronic response analysis ...
Chinonso Ugwumadu +2 more
wiley +1 more source
Transmission of Sound and Vibration to a Shroud-Enclosed Spacecraft [PDF]
, 1966 Jerome E. Manning +2 more
openalex +1 more source
Risk, Hazards &Crisis in Public Policy, EarlyView.Abstract Near‐earth orbits are becoming congested because of a rapid growth in the number of satellites and space debris, which presents a real threat to the sustainable use of space and the safety of the Earth. Despite space scientists and public policymakers having been actively seeking solutions for decades, solving the problem has been put off ...
Anna Ya Ni +2 more
wiley +1 more source
Numerical Calculation of Gas–Liquid Two-Phase Flow in Tesla Valve
AerospaceIn 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 +3 more
doaj +1 more source
Direct wave suppression technology of passive radar system
The Journal of Engineering, 2019 This work studies the direct wave suppression technology of passive radar system based on ‘global system for mobile (GSM)’ communication. In order to suppress direct waves, this study proposes an adaptive suppression algorithm based on NLMS criterion ...
Ren Xiaohang +3 more
doaj +1 more source
Visual perception in the determination of spacecraft attitude [PDF]
, 1967 Joseph Puig, Robert Zenhausern
openalex +1 more source
Distributed Self‐Triggered Formation Control for Multiple Mobile Robots With Dynamic Mappings
International Journal of Robust and Nonlinear Control, EarlyView.ABSTRACT This article proposes a distributed self‐triggered formation control scheme for a group of mobile robots to achieve a desired formation. The robots are assumed to have convex polygon geometric properties. Switching modes are introduced into the distributed formation controller design to balance formation moving and inter‐robot collision ...
Yutong Liu +4 more
wiley +1 more source
Survey of VLF Electric Fields in the Magnetosphere With the Polar Orbiting Spacecraft, 1964–45A [PDF]
, 1966 F. L. Scar, G. M. Crook, R. W. Fredricks
openalex +1 more source
Performance Analysis of Twins4Space: Latency and Data Rates in a SpaceWire Network
International Journal of Satellite Communications and Networking, EarlyView.ABSTRACT Modular Space Systems are an innovative and future‐oriented concept, offering the flexibility to adapt to diverse mission requirements. In our previous paper, we introduced the Twins4Space project, a modular and flexible architecture utilizing a SpaceWire network to connect distributed nodes.
Stefan Lindörfer +3 more
wiley +1 more source