Results 101 to 110 of about 1,576 (295)

Predesign of a Radial Inflow Turbine That Uses Supercritical Methane for a Mid-Scale Thruster for Upper Stage Application

Aerospace
The worldwide concern regarding the harmful effects of old polluting and toxic propellants has led to increased interest in new, green propellants and higher efficiency thrusters.
Alexandru-Claudiu Cancescu, Daniel-Eugeniu Crunteanu, Anna-Maria Theodora Andreescu, Simona-Nicoleta Danescu   +3 more
doaj   +1 more source

Degradable Magnetic Composites from Recycled NdFeB Magnets for Soft Actuation and Sensing

Advanced Robotics Research, EarlyView.
This work presents a degradable soft magnetic composite made from recycled NdFeB particles embedded in a gelatin‐based organogel. The material is processed into magnetic sensors and soft robotic components, which can later be dissolved in a green solvent to recover NdFeB magnetic particles.
Muhammad Bilal Khan, Lin Guo, Kilian Schäfer, Eduardo Sergio Oliveros‐Mata, Xiaotao Wang, Florian Hofmann, Matthias Lutzi, Mark Suppelt, Proloy Taran Das, Jan Schmidtpeter, Imants Dirba, Stephan Rinderknecht, Mario Kupnik, Denys Makarov, Oliver Gutfleisch   +14 more
wiley   +1 more source

Auto-ignition of ionic liquid fuels with hydrogen peroxide triggered by copper-containing liquid promoter

Energetic Materials Frontiers
Research into next-generation propellants with green fuel–oxidizer pairs to replace the currently used highly toxic hydrazine–N2O4 system has attracted widespread attention. Ionic liquids (ILs) and hydrogen peroxide have demonstrated their feasibility as
Si-cheng Liao, Tian-lin Liu, Zhi-yu Zhou, Kang-cai Wang, Qing-hua Zhang   +4 more
doaj   +1 more source

Metallized Dual-Oxidizer Solid Propellants for Green Space Access

, 2006
Owing to technology maturity, simplicity, and reliability, in the near future (2010-2020) solid rocket propulsion will continue to play a main role in the development of Expendable Launch Vehicles (ELV's), both as first stages of heavy launchers and main
GALFETTI, LUCIANO, DE LUCA, LUIGI, S. Levi, A. Vorozhtsov, G. F. Klyakin, S. Cianfanelli, V. Babuk   +6 more
core  

Tumbling Magnetic Microrobots for Targeted In Vivo Drug Delivery in the GI Tract

Advanced Robotics Research, EarlyView.
We introduce a microrobot design and integrated system for on‐demand targeted drug release in the gastrointestinal tract. The microrobot has an embedded magnet for actuation with external magnetic fields and is visualized in real time using ultrasound. It has two drug release ports sealed with a thermally sensitive wax. Local heating of the wax using a
Aaron C. Davis, Luis Carlos Sanjuan Acosta, Shubh P. Mehta, Baiyan Qi, Yang Yang, Luis Solorio, Craig J. Goergen, David J. Cappelleri   +7 more
wiley   +1 more source

Development of Electric and Chemical Microthrusters

International Journal of Aerospace Engineering, 2011
The increasing application of microsatellites (from 10 kg up to 100 kg) as well as CubeSats for a rising number of various missions demands the development of miniaturized propulsion systems.
M. Tajmar, C. A. Scharlemann
doaj   +1 more source

Green Propellants [Elektronisk resurs]

, 2010
To enable future environmentally friendly access to space by means of solid rocket propulsion a viable replacement to the hazardous ammonium perchlorate oxidizer is needed.
Malmström Johnsson, Eva,, Klapötke, Thomas,, Brinck, Tore,, Rahm, Martin,   +3 more
core  

PULCHER – Pulsed Chemical Rocket with Green High Performance Propellants: Project Overview [PDF]

, 2013
PulCheR is a research project co-funded by the European Union Seventh Framework Programme (FP7/2007-2013) under grant agreement n°313271, officially started as of January 1st, 2013. The project is mainly aimed at demonstrating the feasibility of a pulsed
Lecardonnel, L., D'AGOSTINO, LUCA, Lucio, Torre, VALENTINI, DARIO, PASINI, ANGELO, Siciliano, P. F., PACE, GIOVANNI   +6 more
core  

Prototype X: A Cost-Based Design Optimization of an Upper Stage Liquid Propulsion Module with Green-Storable Propellants

, 2022
This paper investigates the cost­-benefit, payload performance and technical feasibility of green storable upper stage design concepts on their potential implementation with existing launchers.
Elferink, Pepijn (author)
core  

Compliant Pneumatic Feet with Real‐Time Stiffness Adaptation for Humanoid Locomotion

Advanced Robotics Research, EarlyView.
A compliant pneumatic foot with real‐time variable stiffness enables humanoid robots to adapt to changing terrains. Using onboard vision and pressure control, the foot modulates stiffness within each gait cycle, reducing impact forces and improving balance. The design, cast in soft silicone with embedded air chambers and Kevlar wrapping, offers durable,
Irene Frizza, Hiroshi Kaminaga, Philippe Fraisse, Gentiane Venture   +3 more
wiley   +1 more source