Results 61 to 70 of about 30,979 (263)
Optimal on-off cooperative manoeuvers for long-term satellite cluster flight [PDF]
, 2014 When a group of satellites is equipped with a particulary simple propul- sion system, e.g. cold-gas thrusters, constraints on the thrust level and total propellant mass renders cluster-keeping extremely challenging.
Gurfil, Pini +2 more
core +1 more source
Spatial scales of the magnetic ramp at the Venusian bow shock [PDF]
Annales Geophysicae, 2011 Typically multi-spacecraft missions are ideally suited to the study of shock spatial scales due to the separation of temporal and spatial variations. These missions are not possible at all locations and therefore in-situ multi-spacecraft measurements ...
A. P. Dimmock +3 more
doaj +1 more source
Frontiers in Astronomy and Space Sciences, 2022 During 2018 November 06, 11:30—18:00 UT, the MMS constellation, the Cluster set of spacecraft, and the Geotail spacecraft were all situated near the dusk flank magnetopause.
Steven M. Petrinec +3 more
doaj +1 more source
The Promise of Solid Lubricants for a Sustainable Future
Advanced Materials, EarlyView.Lubricants are vital for technology, saving energy and resources. The industry seeks sustainable solutions beyond fossil fuels. Solid lubricants offer extremely low friction and reduce environmental impact, especially in harsh conditions. Can these solids truly replace liquid lubricants, or are they limited to extreme applications?
Philipp G. Grützmacher +7 more
wiley +1 more source
, 1974 A star scanner on a spin stabilized spacecraft is described which includes a reticle with a pair of slits having different separations as a function of the spacecraft vertical plane, to form a V slit.
Gutshall, R. L. +2 more
core +1 more source
Beyond Conventional Cooling: Advanced Micro/Nanostructures for Managing Extreme Heat Flux
Advanced Materials, EarlyView.This review examines the design, application, and manufacturing of biomimetic or engineered micro/nanostructures for managing high heat‐flux in multi‐level electronics by enhancing conductive, convective, phase‐changing, and radiative heat transfer mechanisms, highlighting their potential for efficient, targeted thermal management, and future prospects.
Yuankun Zhang +7 more
wiley +1 more source
Advanced Materials, EarlyView.Biological and biologically‐inspired functional nanostructures with structural, thermal, optical, and sensing applications are reviewed. The role of nanoscale features in biological materials on performance is described, and their blueprints are used for bio‐inspired nanomaterials, synthesized using advanced techniques (i.e., photolithography, bio ...
Chao Hsuan (Joseph) Sung +15 more
wiley +1 more source
Energy conversion at the Earth's magnetopause using single and multispacecraft methods [PDF]
, 2011 We present a small statistical data set, where we investigate energy conversion at the magnetopause using Cluster measurements of magnetopause crossings.
Anekallu, C. R. +5 more
core +1 more source
Analysis of three-spacecraft data using planar reciprocal vectors: methodological framework and spatial gradient estimation [PDF]
Annales Geophysicae, 2009 In the context of ESA's Cluster mission, four-point array techniques are widely used to analyze space plasma phenomena such as shocks and discontinuities, waves and turbulence, and spatial gradients.
J. Vogt, A. Albert, O. Marghitu
doaj +1 more source
Long term and safe relative orbit design for heterogeneous spacecraft clusters
Advances in Space Research, 2021 Abstract The problem of obtaining long term relative orbit configurations for spacecraft clusters with realistic operational considerations such as safety, station keeping and inter-spacecraft distances is addressed. Two different approaches are developed for station keeping and safety objectives. In the first approach, relative orbit configurations,
Yaglioglu, Burak, Tekinalp, Ozan
openaire +2 more sources