Results 31 to 40 of about 244,139 (311)
Determination of Initial Conditions for Satellite Formation Flying in Elliptical Orbits [PDF]
Journal 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
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Analytical Solution to relative dynamic of gravity tractors in Formation Flying in Asteroid Deflection Mission [PDF]
فصلنامه 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
Journal 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
AIP 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
UAV as a Reliable Wingman: A Flight Demonstration [PDF]
, 2007 In this brief, we present the results from a flight experiment demonstrating two significant advances in software enabled control: optimization-based control using real-time trajectory generation and logical programming environments for formal analysis ...
Bailey, R. +4 more
core +1 more source
Ionization waves of arbitrary velocity driven by a flying focus
, 2017 A chirped laser pulse focused by a chromatic lens exhibits a dynamic, or "flying," focus in which the trajectory of the peak intensity decouples from the group velocity.
Bahk, S. -W. +7 more
core +1 more source
Design of optimal spacecraft-asteroid formations through a hybrid global optimization approach [PDF]
, 2008 Purpose – The purpose of this paper is to present a methodology and experimental results on using global optimization algorithms to determine the optimal orbit, based on the mission requirements, for a set of spacecraft flying in formation with an ...
Maddock, C., Vasile, M.
core +1 more source
Applied 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
Relativistic analysis of the LISA long range optical links [PDF]
, 2005 The joint ESA/NASA LISA mission consists in three spacecraft on heliocentric orbits, flying in a triangular formation of 5 Mkm each side, linked by infrared optical beams.
Bertrand Chauvineau +7 more
core +3 more sources
Clinical Insights Into Hypercalcemia of Malignancy in Childhood
Pediatric Blood &Cancer, EarlyView.ABSTRACT Hypercalcemia of malignancy (HCM) is a rare but life‐threatening metabolic emergency in children that occurs in less than 1% of pediatric cancer cases, with a reported incidence ranging from 0.4% to 1.0% across different studies. While it is observed in 10%–20% of adult malignancies, pediatric HCM remains relatively uncommon.
Hüseyin Anıl Korkmaz
wiley +1 more source