Results 21 to 30 of about 14,731 (266)

Analysis of Linear and Nonlinear Relative Orbit Dynamics for Satellite Formation Flying [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2009
Relative dynamic models of satellites which describe the relative motion between two satellites is fundamental for research on the formation flying. The accuracy of various linearized or nonlinear models of relative motion is analyzed and compared.
Han-Earl Park   +3 more
doaj   +1 more source

Resilient Networking in Formation Flying UAVs

open access: yesCoRR, 2020
19pages, 17 ...
Lebsework Negash, Han-Lim Choi
openaire   +2 more sources

Satellite Formation Flying for Space Advertising: From Technically Feasible to Economically Viable

open access: yesAerospace, 2022
The paper presents a feasibility study of satellite formation-flying missions for space advertising. To estimate a space advertising mission viability, the global population coverage model is designed and the demonstration schedule with a focus on larger
Shamil Biktimirov   +2 more
doaj   +1 more source

Influence of Satellite Motion Control System Parameters on Performance of Space Debris Capturing

open access: yesAerospace, 2020
Relative motion control problem for capturing the tumbling space debris object is considered. Onboard thrusters and reaction wheels are used as actuators. The nonlinear coupled relative translational and rotational equations of motion are derived.
Mahdi Akhloumadi, Danil Ivanov
doaj   +1 more source

Determination of Initial Conditions for Satellite Formation Flying in Elliptical Orbits [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2005
The initial conditions that generate bounded motion in eccentric reference orbit are determined for satellite formation flying. Because Hill's equations cannot describe the relative motion between two satellites in eccentric orbit, a new relative ...
Woo-Kyoung Lee   +4 more
doaj   +1 more source

Analytical Solution to relative dynamic of gravity tractors in Formation Flying in Asteroid Deflection Mission [PDF]

open access: yesفصلنامه علوم و فناوری فضایی, 2019
In this paper, an analytical solution to deflection mission of asteroid as potentially hazardous spatial mass that threat humanity in future is investigated . The mission of deflecting potentially hazardous asteroids in recently years with possibility of
Javad Shams, Jafar Roshanian
doaj  

Hardware-in-the-Loop Simulation for Spacecraft Formation Flying

open access: yesJournal of Control Science and Engineering, 2010
This paper presents a hardware-in-the-loop (HITL) simulation approach for multiple spacecraft formation flying. Considering a leader-follower formation flying configuration, a Fuzzy Logic controller is developed first to maintain the desired formation ...
Jinjun Shan, Piotr Wenderski
doaj   +1 more source

The influence of three-aircraft formation blinking jamming on the performance of ground monopulse radar

open access: yesAIP Advances, 2023
The purpose of this study is to evaluate the jamming effectiveness evaluation against monopulse radar when using a non-coherent blinking jamming model at regular intervals based on three aircraft flight trajectories. To begin, the formation trajectory is
Zhaozheng Liu   +4 more
doaj   +1 more source

Reconfigurable Fault-Tolerant Control for Spacecraft Formation Flying Based on Iterative Learning Algorithms

open access: yesApplied Sciences, 2022
This paper investigates the issues of iterative learning algorithm-based robust thruster fault reconstruction and reconfigurable fault-tolerant control for spacecraft formation flying systems subject to space perturbations.
Yule Gui   +3 more
doaj   +1 more source

The planar cell polarity protein Vangl2 interacts with the PDZ‐domains of Scribble but not with a unique PDZ‐like domain in Inturned

open access: yesFEBS Letters, EarlyView.
Structural and biochemical characterisations show that the planar cell polarity (PCP) protein Inturned harbours a unique PDZ‐like domain that does not bind canonical PDZ‐binding motifs (PBMs) like that of another PCP protein Vangl2. In contrast, the apical‐basal polarity protein Scribble contains four PDZ domains that bind Vangl2, but one PDZ domain ...
Stephan Wilmes   +4 more
wiley   +1 more source

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