Results 51 to 60 of about 2,815 (307)
Aerospace, 2022 One of the important applications of the space tethered system is formation flying. To satisfy the requirement for interferometry of ground targets by remote-sensing satellites, a new type of tethered solar sail spacecraft has been proposed in recent ...
Yini Zhong, Rui Zhong
doaj +1 more source
Advanced Engineering Materials, EarlyView.This review comprehensively evaluates extrusion‐based additive manufacturing for advanced ceramics, detailing feedstock options and key process parameters. By critically addressing defect mechanisms like porosity and cracking, the work highlights optimization strategies through machine learning and advanced postprocessing.
Meisam Bakhtiari +4 more
wiley +1 more source
Autonomous Formation Flying at DLR's German Space Operations Center (GSOC) [PDF]
, 2007 In the upcoming years, significant changes in the profile of satellite missions are expected as scientists and managers want to benefit from multi-satellite missions.
Gill, Eberhard +3 more
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Interferometric Synthetic Aperture Radar (SAR) Missions Employing Formation Flying [PDF]
, 2010 This paper presents an overview of single-pass interferometric Synthetic Aperture Radar (SAR) missions employing two or more satellites flying in a close formation.
Hajnsek, Irena +4 more
core +1 more source
Decentralized Differential Aerodynamic Control of Microsatellites Formation with Sunlight Reflectors
Aerospace, 2023 The paper presents a study of decentralized control for a satellite formation flying mission that uses differential lift and drag to enforce the relative positioning requirements.
Kirill Chernov +5 more
doaj +1 more source
Ferroelectricity in Antiferromagnetic Wurtzite Nitrides
Advanced Functional Materials, EarlyView.We establish MnSiN2${\rm MnSiN}_2$ and MnGeN2${\rm MnGeN}_2$ as aristotypes of a new multiferroic wurtzite family that simultaneously exhibits ferroelectricity and antiferromagnetism with altermagnetic spin splitting. By strategically substituting alkaline‐earth metals, we predict new materials with coexisting switchable polarization, spin texture, and
Steven M. Baksa +3 more
wiley +1 more source
Real time hardware in the loop simulation testbed of spacecraft formation flying [PDF]
, 2008 The great potential benefits associated with SFF (satellite formation flying) have led to considerable research in this concept around the world. As it is a new field of research and the implementation of formation flying in practice brings some inherent
Ahmed, Riaz
core
The TanDEM-X Mission Phases—Ten Years of Bistatic Acquisition and Formation Planning
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021 TanDEM-X is a formation flying interferometer consisting of two SAR satellites. Together they acquire bistatic SAR data of the earth in order to generate a global digital elevation model as well as individual scientific interferometric datasets on user ...
Markus Bachmann +11 more
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Polarizable Vanadium Dipoles Promote Water Dissociation on Vanadium‐Based Metal Organic Framework
Advanced Functional Materials, EarlyView.The polarization of unpaired V 3d electrons weakens the H─O bond to improve water dissociation by the dual Vδ+:O─H and Pλ−:H─O coupling hydrogen bonds formation and relaxation. P@V‐MOF electrocatalyst shows low overpotentials (94 mV in acid, 178 mV in neutral, and 77 mV in alkaline solutions) with excellent stability for effective overall water ...
Xinjuan Liu +13 more
wiley +1 more source
PRISMA - An Autonomous Formation Flying Mission [PDF]
, 2006 PRISMA is an ongoing satellite project comprising two satellites. The project constitutes an in-orbit test bed for Guidance, Navigation and Control (GNC) algorithms and sensors for advanced closed-loop formation flying and rendezvous. The satellites will
Gill, Eberhard +4 more
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