Results 81 to 90 of about 46,627 (302)
Development of low cost solar panel with cover glass for small satellites applications
, 2013 Solar panels for power generation in space are quite expensive and even small improvements in the development, production and qualification process may result in significant savings for low cost small satellites.
MARCUCCIO, SALVO, Pergola P, Gregucci S
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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
Avionics for a small satellite [PDF]
AIP Conference Proceedings, 2001 This paper discusses a small, seven and a half (7.5) inch diameter, satellite that NASA-JSC is developing as a technology demonstrator for an astronaut assistant. The free flyer, the Mini-AERCam, is designed to off load the flight crew’s workload by performing inspections of the exteriors of the Space Shuttle or International Space Station.
openaire +1 more source
Self-organising low Earth orbit constellations for Earth observation
, 2014 This paper presents a novel method of manipulating the spatial pattern of a fractionated micro-satellite constellation in Low Earth Orbit. The method developed allows satellites to manipulate the longitudinal position of their ground-tracks over the ...
McInnes, Colin, Mushet, Garrie
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Fault Tolerant Attitude Estimation for Small Satellites
, 2020 Small satellites use commercial off-the-shelf sensors and actuators for attitude determination and control (ADC) to reduce the cost. These sensors and actuators are usually not as robust as the available, more expensive, space-proven equipment.
Hacızade, Cengiz, Söken, Halil Ersin
core +1 more source
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
DIRECT OPTICAL HIGH SPEED DOWNLINKS AND GROUND STATION NETWORKS FOR SMALL LEO MISSIONS
, 2010 Direct microwave data downlink capacity of today’s earth observation satellites is limited in terms of available spectrum, transmission data rate, and power consumption.
Giggenbach, Dirk +3 more
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Photometric observation of defunct satellites using small telescopes: preliminary results.
, 2023 Detailed information on space debris characteristics is essential, among other things, to mitigate its hazards to operational satellites and people on Earth. One can perform photometric observations to get some of this information.
Vananti, A. +2 more
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Role of Intrinsic Electron Trapping in Negative Charging of Amorphous Alumina
Advanced Functional Materials, EarlyView.Intrinsic electron trapping in amorphous Al2O3 is examined using hybrid‐DFT models spanning a wide density range. Both spontaneous and thermally activated trapping are identified, with pronounced spontaneous localization in dense, partly crystallized structures.
Jack W. Strand +5 more
wiley +1 more source
Advanced Synthetic Aperture Radar Observations with Clusters of SAR Satellites
, 2001 This paper provides an overview over the advantages and applications of clusters of SAR satellites. It describes the orbit mechanisms for stable configuration flights and how they have evolved from ERS Tandem to the Interferometric CartWheel.
Werner, Marian +5 more
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