Results 111 to 120 of about 10,144 (241)

Orbit period modulation for relative motion using continuous low thrust in the two-body and restricted three-body problems [PDF]

, 2018
This paper presents rich new families of relative orbits for spacecraft formation flight generated through the application of continuous thrust with only minimal intervention into the dynamics of the problem.
Arnot, C.S., Biggs, J., Macdonald, M., McInnes, C.R., McKay, R.J.   +4 more
core   +2 more sources

Numerical Simulations for Optimizing Small Satellite Constellations for TGF Studies

Journal of Geophysical Research: Atmospheres, Volume 130, Issue 8, 28 April 2025.
Abstract The detection of Terrestrial Gamma ray Flashes (TGFs) from space is mostly made by astrophysics satellites, which only provide single‐point measurements. Future TGF missions could consist in performing simultaneous detection by a detector array in space.
Melody Pallu, Sebastien Celestin, Philippe Laurent   +2 more
wiley   +1 more source

On the possibility of determining the parameters of the ionosphere when removing a nanosatellite from orbit using an uninsulated conductive tether

Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение
Currently, one of the ways to quickly remove spent nanosatellites from orbit is the use of non-insulated conductive tether, during the movement of which an electrodynamic braking force arises in the Earth's magnetic field, transferring the nanosatellite ...
T. A. Bystranova, Yu. M. Zabolotnov
doaj   +1 more source

First results of a GNSS-R experiment from a stratospheric balloon over boreal forests [PDF]

, 2015
The empirical results of a global navigation satellite systems reflectometry (GNSS-R) experiment onboard the Balloon EXperiments for University Students (BEXUS) 17 stratospheric balloon performed north of Sweden over boreal forests show that the power of
Camps Carmona, Adriano José, Carreño Luengo, Hugo, Forte Veliz, Giuseppe Francesco, Querol Borràs, Jorge   +3 more
core   +2 more sources

Development of an Electron Emitter via Seamless Shaping of a 3D‐Printed Ceramic Cone With Carbon Nanotube Mesh Film as an Alternative to Polymer‐Based Materials

Advanced Materials Technologies, Volume 10, Issue 8, April 17, 2025.
This paper focuses on electron emitters formed using seamless hybrid shaping of the ceramic 3D‐printed cone (as a supporting structure) and a conductive emitting film obtained from the suspension of dispersed carbon nanotubes. 3D printing enables freedom to design and forming the emitter tip shape and angle to tune the performance of the emitter ...
Karolina U. Laszczyk, Konrad Krol, Mateusz Bialy, Damian Nowak   +3 more
wiley   +1 more source

Pioneering Insights into the Reaction Kinetics of Metastable Intermolecular Composites Based on Metal Fluorides: Virtually non‐existent condensed Phase Combustion Products and Ultra‐Efficient Reactivity

Advanced Science, Volume 12, Issue 14, April 10, 2025.
Novel nano‐thermite designed based on bismuth's low boiling point and the Bi─F bond's low dissociation energy, features enhanced reactivity, minimal condensed phase combustion residues, and self‐pressurization. Its distinctive reaction dynamics facilitate a pre‐ignition stage, resulting in a reduced ignition threshold.
Xuwen Liu, Jingwei Li, Shenghua Feng, Yongsheng Jia, Maocong Hu, Yingkang Yao, Jinshan Sun, Quanmin Xie, Hongqian Sang   +8 more
wiley   +1 more source

Connecting hydrological modelling and forecasting from global to local scales: Perspectives from an international joint virtual workshop

Journal of Flood Risk Management, Volume 18, Issue 1, March 2025.
Abstract The unprecedented progress in ensemble hydro‐meteorological modelling and forecasting on a range of temporal and spatial scales, raises a variety of new challenges which formed the theme of the Joint Virtual Workshop, ‘Connecting global to local hydrological modelling and forecasting: challenges and scientific advances’. Held from 29 June to 1
Antara Dasgupta, Louise Arnal, Rebecca Emerton, Shaun Harrigan, Gwyneth Matthews, Ameer Muhammad, Karen O'Regan, Teresa Pérez‐Ciria, Emixi Valdez, Bart van Osnabrugge, Micha Werner, Carlo Buontempo, Hannah Cloke, Florian Pappenberger, Ilias G. Pechlivanidis, Christel Prudhomme, Maria‐Helena Ramos, Peter Salamon   +17 more
wiley   +1 more source

Attitude Stabilization and Manauvring of Agility Nanosatellite with Control Moment Gyros [PDF]

فصلنامه علوم و فناوری فضایی, 2014
In this paper attitude control system of nanosatellite based on Single Gimbal Control Moment Gyroscope (SGCMG) is presented. A LQR/LQG method is developed for stability of satellite and a feedback quaternion strategy is used for maneuvering mode.
A.A Nikkhah, J. Tayebi, J. Roshanian
doaj  

Simulation of cooling of a processor in nanosatellite using the loop heat pipes

RUDN Journal of Engineering Research, 2019
One of the key problems in the development of nanosatellites is to provide a given temperature range for the operation of electronic equipment, the heat transfer of which can be tens of watts. Thermoregulation systems traditional for large spacecraft are
Yu Wang, Oleg V. Denisov, Liliana V. Denisova   +2 more
doaj   +1 more source

Nanosatellite aerobrake maneuvering device

, 2017
Change of paper's structure, size reducing. 18 pages total, 14 figures.
Melnikova, Valeriia, Borovikov, Alexander, Koretskii, Maksim, Smirnova, Yuliya, Timakova, Ekaterina, Yu, Zhaokai, Kuznetsov, Arseniy, Frolov, Kirill, Tenenbaum, Stepan, Rachkin, Dmitriy, Kotsur, Oleg, Nerovny, Nikolay, Mayorova, Vera, Grigorjev, Anton, Goncharov, Nikita   +14 more
openaire   +2 more sources