Results 21 to 30 of about 86,122 (316)
Time-optimal trajectories to circumsolar space using solar electric propulsion [PDF]
, 2013 The aim of this paper is to explore the capabilities of a solar electric propelled spacecraft on a mission towards circumsolar space. Using an indirect approach, the paper investigates minimum time of transfer (direct) trajectories from an initial ...
Vasile, Massimiliano +5 more
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Equivariant properties of the space ℤ (X) for a stratifiable space X
Вестник Самарского университета: Естественнонаучная серия, 2023 In this paper, we prove the action of the compact group G defined by the stratified space X is continuous to the space Z(X) being a stratified space containing the self-stratified space X as a closed subset.
Tursunboy F. Zhuraev +1 more
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Rarefied gas effects on the aerodynamics of high area-to-mass ratio spacecraft in orbit [PDF]
, 2013 The aerodynamic situation of a satellite-on-a-chip operating in low Earth orbit bears some resemblance to a classical Crookes radiometer. The large area-to-mass ratio characteristic of a SpaceChip means that very small surface-dependent forces produce ...
Reese, Jason M. +7 more
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In-orbit demonstration of a re-trainable machine learning payload for processing optical imagery
Scientific Reports, 2023 Cognitive cloud computing in space (3CS) describes a new frontier of space innovation powered by Artificial Intelligence, enabling an explosion of new applications in observing our planet and enabling deep space exploration.
Gonzalo Mateo-Garcia +8 more
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Biologically Inspired Complete Coverage Path Planning Algorithm Based on Q-Learning
Sensors, 2023 Complete coverage path planning requires that the mobile robot traverse all reachable positions in the environmental map. Aiming at the problems of local optimal path and high path coverage ratio in the complete coverage path planning of the traditional ...
Xiangquan Tan +3 more
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Deflecting small asteroids using laser ablation : Deep space navigation and asteroid orbit control for LightTouch2 Mission [PDF]
, 2013 This paper presents a low-cost, low mass, mission design to successfully intercept and deflect a small and faint, 4 m in diameter asteroid. Intended to be launched after 2025, the laser-ablating mission, LightTouch2 will be used to deflect the orbit of ...
Daniel Garci Yarnoz +9 more
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Research on Actuator Control System Based on Improved MPC
ActuatorsTo improve the control accuracy and interference resistance of actuator control systems in complex environments, a complete actuator control system solution has been designed.
Qingjian Zhao +7 more
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Level spacings and periodic orbits [PDF]
Physical Review E, 2001 Starting from a semiclassical quantization condition based on the trace formula, we derive a periodic-orbit formula for the distribution of spacings of eigenvalues with k intermediate levels. Numerical tests verify the validity of this representation for the nearest-neighbor level spacing (k=0). In a second part, we present an asymptotic evaluation for
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Physical Review A, 2023 Inspired by the covering-space method in path integral on multiply connected spaces, we here present a universal formula of time-evolution kernels for continuous- and discrete-time quantum walks on orbit spaces. In this note, we focus on the case in which walkers' configuration space is the orbit space $Λ/Γ$, where $Λ$ is an arbitrary lattice and $Γ ...
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On the gauge orbit space stratification: a review [PDF]
Journal of Physics A: Mathematical and General, 2002 63 ...
Rudolph, G. +2 more
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