Results 101 to 110 of about 2,052,602 (284)

Ultra‐Compact Cellular Structured Bio‐Carbon Aerogels Supported PCM for Exceptional Thermal Insulation and Radiation Shielding for Space Applications

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Irradiation‐induced high‐efficiency thermal insulation applied to complex thermal management environments: a novel biomass‐based phase change thermal insulation material (CCA/PEG). Integrating phase change materials (PCM) into thermal insulation materials offers a novel approach to aerospace thermal protection.
Zihao Zhao   +3 more
wiley   +1 more source

Locations of Auroral Kilometric Radiation Bursts Inferred From Multi-Spacecraft Wideband Cluster VLBI Observations i: Description of Technique and Initial Results

open access: yes, 2003
The Cluster Wideband Data instrument has been used to determine the locations of auroral kilometric radiation (AKR) using very long baseline interferometry.
Alexander   +21 more
core   +1 more source

Bonding of Hydrogel to Biometal Surfaces: Principles, Methods and Applications

open access: yesExploration, EarlyView.
This article reviews the research progress of hydrogel coatings on biometal surfaces, focusing on biometal surface pretreatment methods, hydrogel‐biometal bonding methods, and applications of hydrogel coatings on biometal surfaces. The article also discusses potential future applications of hydrogel coatings on biometal surfaces to provide a broader ...
Yujie Zhou   +10 more
wiley   +1 more source

Cluster observations of the midaltitude cusp under strong northward interplanetary magnetic field [PDF]

open access: yes, 2008
We report on a multispacecraft cusp observation lasting more than 100 min. We determine the cusp boundary motion and reveal the effect on the cusp size of the interplanetary magnetic field (IMF) changing from southward to northward.
Bogdanova, Y. V.   +5 more
core   +1 more source

Development of n‐type ZnAlInO Semiconductor Materials for Thermoelectric Generators in Aerospace Applications

open access: yesChemistryOpen, EarlyView.
Herein, the synthesis and production of n‐type ZnAlInO semiconductor materials is achieved utilizing sol–gel and cold pressing methods for fabrication in aerospace thermoelectric generators applications. The Seebeck coefficient and power factor values increase with the addition of template samples, reaching a maximum of −162.63 μV K−1 and 0.44 mW mK−2,
Enes Kilinc   +4 more
wiley   +1 more source

Cluster as current sheet surveyor in the magnetotail [PDF]

open access: yesAnnales Geophysicae, 2013
A novel analysis technique is presented to estimate the current sheet thickness unambiguously and directly, without associating time series data with spatial structure.
Y. Narita, R. Nakamura, W. Baumjohann
doaj   +1 more source

Kernel Embedding Approaches to Orbit Determination of Spacecraft Clusters

open access: yes, 2018
This paper presents a novel formulation and solution of orbit determination over finite time horizons as a learning problem. We present an approach to orbit determination under very broad conditions that are satisfied for n-body problems. These weak conditions allow us to perform orbit determination with noisy and highly non-linear observations such as
Sharma, Srinagesh, Cutler, James W.
openaire   +2 more sources

Effects of Galactic Irradiation on Thermal and Electronic Transport in Tungsten

open access: yesphysica status solidi (b), EarlyView.
This atomic‐scale study reveals how low‐to‐mid‐energy space irradiation alters tungsten's thermal and electronic behavior, even at low defect levels. Focusing on vacancy sites in bulk and near grain boundaries, it employs two novel approaches: site‐projected thermal conductivity and the N2$^{2}$ method for the thermal and electronic response analysis ...
Chinonso Ugwumadu   +2 more
wiley   +1 more source

Distributed angle‐only orbit determination algorithm for non‐cooperative spacecraft based on factor graph

open access: yesIET Radar, Sonar & Navigation
Bayesian filtering provides an effective approach for the orbit determination of a non‐cooperative target using angle measurements from multiple CubeSats.
Zhixun Zhang   +4 more
doaj   +1 more source

Four-point high time resolution information on electron densities by the electric field experiments (EFW) on Cluster [PDF]

open access: yesAnnales Geophysicae, 2001
For accurate measurements of electric fields, spherical double probes are electronically controlled to be at a positive potential of approximately 1 V relative to the ambient magnetospheric plasma.
A. Pedersen   +9 more
doaj   +1 more source

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