Results 101 to 110 of about 90,052 (317)

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

Different Frontier, Same Legal Script? On the Course of Replicating Earth's Patterns in Space

The Modern Law Review, EarlyView.
As states and private actors expand their activities in outer space, the international legal framework governing this domain risks extending longstanding structures of global inequality beyond Earth. This article examines how international space law, shaped by a broader disciplinary pattern of reactive legal development, is poised to reproduce ...
Sivan Shlomo‐Agon, Michal Saliternik
wiley   +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

The Importance of Accurate Computation of Secondary Electron Emission for Modeling Spacecraft Charging

, 2005
Secondary electron emission is a critical contributor to the current balance in spacecraft charging. Spacecraft charging codes use a parameterized expression for the secondary electron yield δ(Eo) as a function of incident electron energy Eo.
Thomson, Clint, Clerc, S., Dennison, JR, Dennison, John R., Thomson, C. D., Clerc, Sebastien   +5 more
core   +1 more source

New Challenges for European Space Industrial Policy

Global Policy, EarlyView.
ABSTRACT The European space industry is globally competitive but faces challenges due to fragmented governance, reliance on commercial markets, and increased international competition. The European Union (EU) has become a major stakeholder in this sector, with a ‘fragmented institutional market’ shaped by policies, initiatives and programmes at ...
Sara Dalledonne, Justine Dousset, Marco Aliberti   +2 more
wiley   +1 more source

SCALABLE DECENTRALIZED NAVIGATION AND CONTROL ALGORITHMS FOR LARGE SCALE SPACECRAFT FORMATIONS [PDF]

, 2008
Future NASA missions requiring spacecraft formation flying require an extremely high level of autonomy and robustness when compared to single spacecraft systems.
McLoughlin, Terence Hugh
core  

EU Space Law and Earth's Boundaries: Integrating Environmental Impact Assessment and Corporate Due Diligence

Global Policy, EarlyView.
ABSTRACT The European Union's proposed Space Law aims to establish a unified approach for sustainable space activities across the EU. While the EU's satellite constellations contribute to sustainability efforts, they can also have negative environmental impacts.
Elena Cirkovic, Vitali Braun
wiley   +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

Equations of Motion of Free-Floating Spacecraft-Manipulator Systems: An Engineer's Tutorial [PDF]

, 2018
The paper provides a step-by-step tutorial on the Generalized Jacobian Matrix (GJM) approach for modeling and simulation of spacecraft-manipulator systems.
Alessio Grompone, Kwok Choon, Stephen, Grompone, Alessio, Wilde, Markus, Markus Wilde, Choon, Stephen Kwok, Romano, Marcello, Marcello Romano, Stephen Kwok Choon   +8 more
core   +1 more source

Rendezvous in Space: Tech Diplomacy and the Commercial Space Era—A Study of Rendezvous and Docking Technologies and Space Exploration Co‐Operation Since the Cold War

Global Policy, EarlyView.
ABSTRACT On‐orbit rendezvous and docking constitute one of the most technically challenging activities in the history of space activities. As space endeavours mature to crewed missions, space rendezous and docking technologies (RDT) emerge as an area of technological innovation critical to advances in future crewed space exploration.
Nikita Chiu, Markus Kornprobst
wiley   +1 more source