Actualités
Optimisation of silica-cork aerogel composites for efficient fire-retardant thermoacoustic barrier
The development and optimisation of silica-cork aerogel composites, prepared with tetraethyl orthosilicate (TEOS) and vinyltrimethoxysilane (VTMS) as co-precursors and reinforced with short cut aramid fibres is herein presented. Different synthesis parameters, such as...
Reinventing Thermal Management: Advanced Materials for High-Power Electronics and EVs
As electronic devices and EV systems continue to push the boundaries of power density and miniaturization, managing heat has become one of the most pressing engineering challenges. In high-power applications like silicon carbide (SiC) and gallium nitride (GaN)...
Aero : la France veut créer une filière industrielle souveraine de pièces en composites haute performance capables de remplacer le métal
Depuis deux ans, le projet de recherche Compinnov HT+ auquel participent PME et grands groupes cherche à industrialiser en France la fabrication de composites avancés. Alors que le Scaf et le remplaçant de l’A320 se profilent, ces pièces capables de résister à plus de...
Temperature-aware Power Management of IoT Nodes for Pre-launch Satellite Qualification
This paper presents a test setup for evaluating Internet of Things (IoT) nodes used in pre-launch satellite qualification, with a focus on a temperature aware power manager (PM). The PM dynamically routes energy between a battery and a supercapacitor, entering a...
La NASA déploie un ressort imprimé en 3D en orbite
Le 3 février dernier, alors que le satellite Mercury One survolait la Terre, un petit boîtier a libéré un ressort en titane d’un mouvement simple mais disruptif. Il s’agissait du JPL Additive Compliant Canister (JACC), une démonstration technologique du Jet Propulsion...
Tracing Three Decades of Low Earth Orbit Satellite Communication Development: A Bibliometric and Main Path Analysis of Network Architectures, Protocol Evolution, and Emerging Intelligent Services
Low Earth Orbit (LEO) satellite communication systems have evolved into a critical component of global broadband networks, enabling wide-area connectivity, IoT services, and intelligent multilayer satellite–terrestrial integration. Despite rapid advancements in...
Detection of GNSS Interference Using Reflected Signal Observations from the LEO Satellite Constellation
Radio Frequency Interference (RFI) is a growing concern for Global Navigation Satellite System (GNSS) reliability. The Cyclone GNSS (CYGNSS) constellation, designed for ocean wind retrieval via GNSS reflectometry (GNSS-R), provides Delay-Doppler Maps (DDMs) with noise...
Tout savoir sur le drone LUCAS
Les conflits récents ont profondément transformé la manière de concevoir les armes aériennes. Désormais, les drones bon marché capables de frapper à longue distance deviennent des outils centraux des stratégies militaires. Dans ce contexte, les États-Unis ont...
A novel hybrid acoustic-optical communication system: innovations in real-time adaptability and performance in marine environments
Data rates and reliability in underwater wireless communication systems are severely constrained owing to factors such as turbidity and noise. Here we present a novel hybrid system, combining acoustic and optical technologies in a dynamic switching protocol guided by...
En Bretagne, la DGA accélère l’innovation de défense avec les start-up
La Direction générale de l’armement et les partenaires du pôle Bretagne Innovation Grand Ouest (BINGO) viennent de renouveler leur convention pour trois ans. L’accord vise à accélérer la mise en relation entre industriels et armées afin de transformer plus rapidement...
