Results 61 to 70 of about 1,576 (295)
Development of a Throttleable 6 kN H2O2/Butyl Alcohol Rocket Engine
AerospaceThe increasing demand for versatile and sustainable propulsion systems has intensified research into green propellants and advanced thrust modulation technologies.
Zbigniew Gut +2 more
doaj +1 more source
Assessment of Propulsion System Architectures for Green Propellants-based Orbital Stages [PDF]
, 2022 Green Propulsion is a recurring trend in the space sector that has grown exponentially over the last decades. The researchers’ shared goal is to find good alternatives to current liquid propellants, usually toxic and hard-to-manage during ground ...
Lauck, Felix +7 more
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Weaving Intelligence: Thermally Drawn Multimaterial Fibers Toward AI‐Enabled Smart Textiles
Advanced Materials, EarlyView.Thermally drawn multimaterial fibers are rapidly advancing as intelligent structural units for next‐generation smart textiles. Integrating multimaterial architectures with neuromorphic and spiking‐neural‐network principles enables fabrics that can sense, compute, and adapt autonomously.
Vuong Dinh Trung +9 more
wiley +1 more source
Simulation of bi-Propellant Reaction Control Thrusters Based on Nitrous Oxide and Hydrocarbons
AerospaceTo replace highly toxic hydrazin-driven reaction control systems, a number of non-toxic alternatives are under development. These are usually referred to as “green propellants”.
Stefan Fechter +2 more
doaj +1 more source
Suggestion for a unified performance assessment criterion of spacecraft propellants
, 2010 Propellant performance is usually assessed through the comparison of either the specific impulse Isp or the specific impulse density Isp,d of different propellants.
Riccius, Jörg, Bouajila, W.
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Design and first results of an injector test setup for green hypergolic propellants
, 2019 Investigations for the development of new liquid green hypergolic propellants are carried out by the Propellants department of DLR Lampoldshausen. One part of the development includes testing of new propellants under flowing conditions to determine the ...
Lauck, Felix +9 more
core +1 more source
Fully 3D‐Printed Wave‐Wound Electromagnetic Motors
Advanced Materials Technologies, EarlyView.This work presents the first fully 3D‐printed wave‐wound electromagnetic motors, which are created using conductive nanoparticle inks, carbon‐filled nylon polymers, and surface mount components. These motors can achieve a stall torque of 7.62N·mmA−1$7.62 \nobreakspace N{\cdot }mm A^{-1}$ and efficiency of 28.2 %, which approaches the performance of ...
Joseph Schwalbe +4 more
wiley +1 more source
Magnetic Droplet Manipulation on Open Surfaces
Advanced Materials Technologies, EarlyView.Recent advances in the manipulation of magnetic droplets demonstrate various manipulations on open surfaces, including transport, splitting, merging, and force‐controlled motion, enabled by magnetic particles and external fields. ABSTRACT Manipulation of liquids on a smaller scale enables applications in various fields, particularly diagnostics and ...
Robab Jahangir, Vahid Nasirimarekani
wiley +1 more source
Monoethanolamine-Based Fuels Hypergolic with Rocket-Grade Hydrogen Peroxide
AerospaceThe object of this work is to study the ignition performances of promising catalytically promoted amino-based green fuels to be used in combination with rocket-grade hydrogen peroxide.
Luca Caffiero +2 more
doaj +1 more source
Low-Cost and Green Solid Propellants for Space Propulsion
, 2004 Ammonium Nitrate (AN), an inorganic solid oxidizer used in rocket propulsion decades ago, produces environmentally friendly combustion products and it is a very cheap energetic material. The main objective of this work is to propose AN-based formulations
GALFETTI, LUCIANO +7 more
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