Searching for some natural orbits to observe the double asteroid 2002CE26
Sign Up to like & getrecommendations! Published in 2017 at "Astrophysics and Space Science"
DOI: 10.1007/s10509-017-3094-z
Abstract: Knowledge of the Solar System is increasing with data coming from space missions to small bodies. A mission to those bodies offers some problems, because they have several characteristics that are not well known, like… read more here.
Keywords: system; spacecraft; two bodies; asteroid 2002ce26 ... See more keywords
Unconstrained Direct Optimization of Spacecraft Trajectories Using Many Embedded Lambert Problems
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Optimization Theory and Applications"
DOI: 10.1007/s10957-021-01884-1
Abstract: Direct optimization of many-revolution spacecraft trajectories is performed using an unconstrained formulation with many short-arc, embedded Lambert problems. Each Lambert problem shares its terminal positions with neighboring segments to implicitly enforce position continuity. Use of… read more here.
Keywords: direct optimization; spacecraft; lambert problems; optimization ... See more keywords
Distributed attitude control for multiple flexible spacecraft under actuator failures and saturation
Sign Up to like & getrecommendations! Published in 2017 at "Nonlinear Dynamics"
DOI: 10.1007/s11071-016-3258-3
Abstract: This paper solves the problem of attitude consensus for flexible spacecraft formation under actuator failures and saturation constraints. Three insightful distributed consensus control laws are designed based on the Lyapunov’s stability theory and graph theory.… read more here.
Keywords: flexible spacecraft; control; spacecraft; saturation ... See more keywords
Rigid-flexible coupling dynamic modeling and vibration control for flexible spacecraft based on its global analytical modes
Sign Up to like & getrecommendations! Published in 2018 at "Science China Technological Sciences"
DOI: 10.1007/s11431-017-9219-1
Abstract: In this study, we used global analytical modeswfny (GAMs) to develop a rigid-flexible dynamic modeling approach for spacecraft with large flexible appendages (SwLFA). This approach enables the convenient and precise calculation of the natural characteristics… read more here.
Keywords: flexible spacecraft; control; spacecraft; global analytical ... See more keywords
Basic Study on Thermodynamic Vent System in Propulsion System for Future Spacecraft
Sign Up to like & getrecommendations! Published in 2020 at "Microgravity Science and Technology"
DOI: 10.1007/s12217-019-09768-w
Abstract: In planned planetary explorations, cryogenic liquids such as liquid hydrogen (LH 2 ), liquid oxygen (LOX), and liquefied natural gases (LNG) are used as fuel and oxidants in the propulsion systems of spacecraft. Such explorations… read more here.
Keywords: system; thermodynamic vent; spacecraft; vent system ... See more keywords
Development of Control Algorithms for the Orbital Motion of a Small Technological Spacecraft with a Shadow Portion of the Orbit
Sign Up to like & getrecommendations! Published in 2020 at "Microgravity Science and Technology"
DOI: 10.1007/s12217-020-09822-y
Abstract: The paper proposes algorithms for controlling the orbital motion of a small spacecraft for executive bodies with constant and variable thrust. The developed algorithms are aimed at neutralizing the influence of temperature shock on the… read more here.
Keywords: motion small; technological spacecraft; spacecraft; development control ... See more keywords
Robust Control of Spacecraft: Application to an Actuated Simulator
Sign Up to like & getrecommendations! Published in 2018 at "International Journal of Control, Automation and Systems"
DOI: 10.1007/s12555-016-0803-2
Abstract: In this article, a hardware-in-the-loop implementation of two robust controllers based on high-order sliding mode and μ-synthesis method are performed and compared in terms of performance and functionality. The spacecraft simulator consists of a free-floating… read more here.
Keywords: robust control; simulator; control; spacecraft ... See more keywords
Manipulator-actuated Adaptive Integrated Translational and Rotational Stabilization for Spacecraft in Proximity Operations with Control Constraint
Sign Up to like & getrecommendations! Published in 2018 at "International Journal of Control, Automation and Systems"
DOI: 10.1007/s12555-017-0689-7
Abstract: This paper tackles the problem of integrated translation and rotation stabilization of the spacecraft in proximity operations by proposing a novel manipulator actuation strategy. To do so, by theoretically integrating the attitude/position motion of the… read more here.
Keywords: control; spacecraft; stabilization spacecraft; manipulator ... See more keywords
Chattering Free Distributed Consensus Control for Attitude Tracking of Spacecraft Formation System with Unmeasurable Angular Velocity
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Control, Automation and Systems"
DOI: 10.1007/s12555-019-0543-1
Abstract: In this paper, the attitude tracking control of spacecraft formation is studied when the velocities of spacecrafts are unmeasurable. Firstly, a Finite-Time Extended State Observer (FTESO) is constructed to estimate the unmeasured angular velocity and… read more here.
Keywords: control; spacecraft; consensus; attitude tracking ... See more keywords
Implementing model-based system engineering for the whole lifecycle of a spacecraft
Sign Up to like & getrecommendations! Published in 2017 at "CEAS Space Journal"
DOI: 10.1007/s12567-017-0166-4
Abstract: Design information of a spacecraft is collected over all phases in the lifecycle of a project. A lot of this information is exchanged between different engineering tasks and business processes. In some lifecycle phases, model-based… read more here.
Keywords: engineering; information; project; spacecraft ... See more keywords
Evaluation of the impact on European air traffic by uncontrolled reentering spacecraft with initial state uncertainty
Sign Up to like & getrecommendations! Published in 2019 at "CEAS Aeronautical Journal"
DOI: 10.1007/s13272-019-00405-1
Abstract: The area of spaceflight, especially human space flight, experienced a change in the past decades. Due to the privatization of space flight, many advances were provided and human space flight was pushed forward. The number… read more here.
Keywords: spacecraft; air traffic; space; initial state ... See more keywords