Results 61 to 70 of about 6,897 (216)

Singular value decomposition based satellite attitude determination using different sensor configurations

International Journal of Metrology and Quality Engineering, 2017
Satellite's attitude can be determined by using several different ways. In order to use a recursive filter to determine the attitude especially after crucial intervals for the satellite including detumbling, eclipse, etc., single-frame methods can be ...
Cilden Guler Demet, Hajiyev Chingiz
doaj   +1 more source

Development of small satellite structure taking into account the use of laser measuring systems

Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2017
The article presents some information on the development of the design concept of a small satellite for Earth remote sensing. The AIST-2D engineering test small satellite is a co-development of the Progress Space-Rocket Centre and the Samara National ...
S. N. Shaposhnikov
doaj   +1 more source

Enhancing Low‐Temperature Performance of Sodium‐Ion Batteries via Anion‐Solvent Interactions

Advanced Functional Materials, EarlyView.
DOL is introduced into electrolytes as a co‐solvent, increasing slat solubility, ion conductivity, and the de‐solvent process, and forming an anion‐rich solvent shell due to its high interaction with anion. With the above virtues, the batteries using this electrolyte exhibit excellent cycling stability at low temperatures. Abstract Sodium‐ion batteries
Cheng Zheng, Qian Yao, Yanan Sun, Hongyu Lv, Zhongchao Bai, Guoliang Zhang, Nana Wang, Jian Yang   +7 more
wiley   +1 more source

Angular Velocity Estimation for Nanosatellites Using Vector Measurements

Havacılık ve Uzay Teknolojileri Dergisi, 2021
In the absence of gyro sensors, the straightforward approach to estimate the angular velocity is using a dynamics-based attitude filter which can provide angular rate information together with the attitude of the satellite.
Halil Ersin SÖKEN
doaj  

Solar Module Integrated Converters as Power Generator in Small Spacecrafts: Design and Verification Approach

Aerospace, 2019
As small satellites are becoming more widespread for new businesses and applications, the development time, failure rate and cost of the spacecraft must be reduced.
Jesus Gonzalez-Llorente, Aleksander A. Lidtke, Ken Hatanaka, Ryo Kawauchi, Kei-Ichi Okuyama   +4 more
doaj   +1 more source

Composites of Shellac and Silver Nanowires as Flexible, Biobased, and Corrosion‐Resistant Transparent Conductive Electrodes

Advanced Functional Materials, EarlyView.
Shellac, a centuries‐old natural resin, is reimagined as a green material for flexible electronics. When combined with silver nanowires, shellac films deliver transparency, conductivity, and stability against humidity. These results position shellac as a sustainable alternative to synthetic polymers for transparent conductors in next‐generation ...
Rahaf Nafez Hussein, Tiago Carneiro Gomes, Eliza Ng, Simon Rondeau‐Gagné, Tricia Breen Carmichael   +4 more
wiley   +1 more source

EsTRACE—Es-Layer TRAnsient Cloud Explorer: PlanarSat Mission Concept and Early-Phase Design (Bid, CoDR, PDR) for Sporadic-E Sensing

Applied Sciences
Sporadic-E (Es) layers can strongly perturb HF/VHF propagation and create intermittent interference, motivating higher-revisit monitoring at the frequencies most affected.
Mehmet Şevket Uludağ, Alim Rüstem Aslan   +1 more
doaj   +1 more source

A Study on Attitude Estimation for Small Satellite by Lunar Outline Extraction

SICE Journal of Control, Measurement, and System Integration, 2017
In this paper, an attitude angle detection system for a small satellite at eclipse is constructed. Recently, a small satellite mission is applied to various fields, and a small satellite mission at eclipse is planned.
Nobuto Hirakoso, Kensuke Tajima, Mizuki Ando, Eric Tan Kai Chiang, Kentaro Kitamura, Kazumasa Imai, Yoichi Shigematsu   +6 more
doaj   +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, Jun Xu, Minmin Fan, Jingcheng Xu, Mengyuan Li, Yun Gong, Weiwei Yang, Lei Li, Yong Zhou, Deqiang Zhao, Yuhua Xue, Xingtao Xu, Chang Q. Sun, Liming Dai   +13 more
wiley   +1 more source

Omnipolar Magnetic Field Detection by Superlattice‐Based Hall Sensor

Advanced Functional Materials, EarlyView.
Magnetic‐field‐induced electronic switching is demonstrated in unit‐cell‐engineered La0.7Sr0.3MnO3–BiFeO3 superlattices. Distinct substrate terminations modify magnetic and transport properties. Hall resistance measurements show omnipolar, hysteretic anomalous Hall switching above the Curie temperature, arising from Fe─Mn interfacial exchange, enabling
Mark Huijben, Nicolas Gauquelin, Arno Annys, Zhaoliang Liao, Jo Verbeeck, Guus Rijnders, Gertjan Koster   +6 more
wiley   +1 more source