Results 71 to 80 of about 4,833,960 (280)
Aerospace, 2018 In recent years, the maturation of small satellite technology has led to their adoption for a variety of space missions. The next generation of small satellite missions, however, will likely have the satellites operating in formations or “constellations”
Sandra Romero-Diez +5 more
doaj +1 more source
Advanced Materials, EarlyView.We report perovskite photodetectors with record specific detectivities exceeding 1013 Jones with a novel molecular design strategy to functionalize self‐assembled monolayers (SAMs) with ferrocene (Fc) derivatives. Fc‐SAM‐based devices also exhibit strong operational stability and enable data transmission rates exceeding 1 Mbps in a LiFi system ...
Edoardo Angela +10 more
wiley +1 more source
Journal of Aerospace Technology and Management, 2012 In recent years, dynamics and control of satellite formation flying have been active areas of research. From the mission planning perspective, three main areas namely formation establishment, maintenance and reconfiguration have been discussed.
M Navabi +2 more
doaj
Interface‐Mediated Catalysis for Improved Hydrogen Storage in Reactive Hydride Composites
Advanced Materials, EarlyView.Catalyst–hydride interfaces are engineered in Co@C‐ and Ni@C‐modified 2LiH + MgB2 reactive hydride composites to accelerate hydrogen uptake and release. Multiscale scattering, in‐situ synchrotron radiation powder x‐ray diffraction and density functional theory calculations reveal the structural and electronic origin of the catalytic enhancement ...
Yuanyuan Shang +12 more
wiley +1 more source
Descriptor‐Informed Screening of Interface‐Active Molecules for Efficient Magnesium Metal Anodes
Advanced Materials, EarlyView.A descriptor‐informed molecular screening strategy identifies 4‐bromo‐N, N‐dimethylaniline (BrNNA) as an interface‐active electrolyte component that enables fast Mg stripping/plating in Mg(TFSI)2‐based electrolytes. By simultaneously regulating Mg2+ solvation and interphase formation, the BrNNA‐containing electrolyte delivers activation‐free Mg ...
Hao Xu +16 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
core
FPGA-based operational concept and payload data processing for the Flying Laptop satellite [PDF]
, 2009 Flying Laptop is the first small satellite developed by the Institute of Space Systems at the Universität Stuttgart. It is a test bed for an on-board computer with a reconfigurable, redundant and self-controlling high computational ability based on the ...
Huber, Felix +11 more
core +1 more source
Dual Single Atoms Boosting Photocatalytic Upcycling of Raw Polyvinylidene Fluoride Plastic
Advanced Materials, EarlyView.To resolve the catastrophic disaster of plastic contamination, the Cu‐Fe dual‐single‐atom‐loaded In2P3S9 NSs photocatalyst was prepared for direct conversion of raw polyvinylidene fluoride plastic into valuable chemicals. The dual‐single‐atom catalyst exhibits exceptional performance, with a total acetic/formic acid production of ∼1351.8 µmol g−1 ...
Amin Talebian‐Kiakalaieh +6 more
wiley +1 more source
Formation Flight in Low-Earth-Orbit at 150m Distance; AOCS In-Orbit Experience [PDF]
, 2012 AOCS operations for two satellites flying at ~514 km altitude with unprecedented small separation of 150 m upwards pose various new challenges and require creative solutions.
Schulze, Daniel +3 more
core +1 more source
Advances in Mechanical Engineering, 2019 The proof mass used for gravitational-wave or Earth-gravity-field detection is usually comprised of materials such as gold–platinum alloys, which have a high density and low magnetic susceptibility, in order to reduce the magnetic disturbance produced by
Zeyang Zhao, Zhaokui Wang, Yulin Zhang
doaj +1 more source