Results 331 to 340 of about 405,081 (406)
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Building the future of WaferSat spacecraft for relativistic spacecraft
SPIE Proceedings, 2016Recently, there has been a dramatic change in the way space missions are viewed. Large spacecraft with massive propellant-filled launch stages have dominated the space industry since the 1960’s, but low-mass CubeSats and low-cost rockets have enabled a new approach to space exploration. In recent work, we have built upon the idea of extremely low mass (
Eric J. Stanton +6 more
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Leader-Following Attitude Consensus of Multiple Rigid Spacecraft Systems Under Switching Networks
IEEE Transactions on Automatic Control, 2020The leader-following attitude consensus problem of networked rigid spacecraft systems is addressed by a distributed control law. Compared with existing results, the salient characteristic of this work is that the communication network is allowed to be ...
Maobin Lu, Lu Liu
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Observer-Based Output Feedback Attitude Stabilization for Spacecraft With Finite-Time Convergence
IEEE Transactions on Control Systems Technology, 2019This brief investigates the problem of finite-time output feedback control for spacecraft attitude stabilization without angular velocity measurement.
Q. Hu, Boyan Jiang, Youmin Zhang
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2011
The Giotto spacecraft (Fig. 1), the first ESA (European Space Agency) interplanetary probe, was designed to flyby comet Halley. Launched on 2 July 1985 by an Ariane-1 rocket from Kourou, Giotto succeeded in approaching the cometary nucleus to within 600 km on 14 March 1986. Through its first accurate images of a nucleus and in situ studies of gases and
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The Giotto spacecraft (Fig. 1), the first ESA (European Space Agency) interplanetary probe, was designed to flyby comet Halley. Launched on 2 July 1985 by an Ariane-1 rocket from Kourou, Giotto succeeded in approaching the cometary nucleus to within 600 km on 14 March 1986. Through its first accurate images of a nucleus and in situ studies of gases and
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The Criticality of Spacecraft Index
Advances in Space Research, 2015The future space debris environment will be governed by the production of fragments coming from massive breakups. In order to identify the most relevant parameters influencing the long term evolution of the environment and to assess the criticality of selected space objects in different regions of the circumterrestrial space, a large parametric study ...
Giovanni B. Valsecchi +3 more
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Information-Based Guidance and Control Architecture for Multi-Spacecraft On-Orbit Inspection
AIAA Scitech 2021 Forum, 2020We present an architecture for inspection or mapping of a target spacecraft, referred to as chief, in an orbit around Earth using multiple spacecraft, referred to as deputies (or) observers, in stable Passive Relative Orbits (PROs). We use an information
Yashwanth Kumar Nakka +5 more
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Model Predictive Sliding Control for Finite-Time Three-Axis Spacecraft Attitude Tracking
IEEE transactions on industrial electronics (1982. Print), 2019This paper deals with the robust optimal three-axis attitude tracking problem of spacecrafts. To this aim, the exceptional features of two advanced control approaches, i.e., nonlinear terminal sliding mode control (TSMC) and linear model predictive ...
F. Bayat
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Spacecraft exploration of asteroids [PDF]
Solar System Research, 2005 The past, current, and planned space missions for asteroid exploration are reviewed. The main results based on observations performed with satellites in near-Earth orbits (OAO-2, IUE, FIRSSE, IRAS, HST, Hipparcos, ISO, MSX) and space probes sent to particular objects (Galileo, NEAR, DS1, Stardust) are reported.
R. A. Mohamed, V. G. Shevchenko
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Continuous Finite-Time Attitude Control for Rigid Spacecraft Based on Angular Velocity Observer
IEEE Transactions on Aerospace and Electronic Systems, 2018This paper addresses the problem of designing an angular velocity observer and an output feedback attitude controller with finite-time convergence and disturbances for spacecraft.
Q. Hu, Boyan Jiang
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Spacecraft design considerations for spacecraft charging environments
2017 Asia-Pacific International Symposium on Electromagnetic Compatibility (APEMC), 2017Spacecraft charging (surface and internal) is complex physical phenomena that can have serious ramifications on mission success. The degree of spacecraft charging a spacecraft may experience is heavily dependent on both the surrounding space environment and spacecraft geometry (more specifically, the geometry and material makeup of the spacecraft).
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