Results 71 to 80 of about 1,576 (295)
Machine Learning Enables Inverse Design of Optically Driven Microscopic Metavehicles
Advanced Optical Materials, EarlyView.Machine‐learning‐based inverse design is used optimize “metavehicles” — flat microparticles based on metagratings that generate a strong lateral optical force from normally incident light. The optimized design exhibits a force efficiency of ∼88% and a measured propulsion speed in water much higher than previously reported, demonstrating that inverse ...
Vasilii Mylnikov +2 more
wiley +1 more source
Hydrogen peroxide - from bridesmaid to bride
, 2006 The criticisms raised by John Clark concerning the use of hydrogen peroxide as a future rocket propellant are revisited. These criticisms focus on five important issues associated with detonation hazards, consequences of contamination, stability in ...
Musker, A.J. +3 more
core
PulCheR-Pulsed Chemical Rocket with Green High Performance Propellants: Second Year Project Overview
, 2015 PulCheR (Pulsed Chemical Rocket with Green High Performance Propellants) is a research project co-funded by the European Union Seventh Framework Programme (FP7/2007-2013) under grant agreement n°313271 and is at its second year. The project officially
Lucio Torre +5 more
core +1 more source
On–Off Switchable Micromotors for Use in Steerable Microvehicles
Advanced Robotics Research, EarlyView.Electrically controllable micromotors and microvehicles are developed by tuning the diffusion of the fuel. Self‐propelled micromotors using bubble propulsion show great promise for miniaturized devices with multiuse purposes such as cargo delivery and sensing. However, there is currently no method to electrically switch the micromotors on or off. Here,
Hugo Severinsson +3 more
wiley +1 more source
Numerical model for concentration measurement during decomposition of H2O2 over silver catalyst
MATEC Web of Conferences, 2018 Minimal thrust of the order of few Newton is produced using micro thrusters, which are used for controlling the orientation and trajectory of the satellite or spacecraft.
Sanjay Vasanth. KB +2 more
doaj +1 more source
Recent Advances in Synthesis and Properties of Nitrated-Pyrazoles Based Energetic Compounds
Molecules, 2020 Nitrated-pyrazole-based energetic compounds have attracted wide publicity in the field of energetic materials (EMs) due to their high heat of formation, high density, tailored thermal stability, and detonation performance.
Shijie Zhang +6 more
doaj +1 more source
Solid Propellants Based on AN/AP Co-Crystal for Green Space Access
, 2006 Ammonium Nitrate, an inorganic solid oxidizer already used in rocket propulsion decades ago, produces environmentally friendly combustion products. It is a very cheap energetic material, but its specific impulse is low compared with that of Ammonium ...
D. Signoriello +7 more
core
Information Transmission Strategies for Self‐Organized Robotic Aggregation
Advanced Robotics Research, EarlyView.In this review, we discuss how information transmission influences the neighbor‐based self‐organized aggregation of swarm robots. We focus specifically on local interactions regarding information transfer and categorize previous studies based on the functions of the information exchanged.
Shu Leng +5 more
wiley +1 more source
Green Advanced Space Propulsion
, 2008 Space activities and applications play an important role in strengthening the competitiveness of Europe by scientific progress and by providing strategic influence and security.
RUSSO, ANNAMARIA
core
Collision‐Resilient Winged Drones Enabled by Tensegrity Structures
Advanced Robotics Research, EarlyView.Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui +5 more
wiley +1 more source