Results 101 to 110 of about 9,918 (348)

Green Propellants Based on Ammonium Dinitramide (ADN)

open access: yes, 2011
Ammonium perchlorate (AP) and hydrazine are today widely used as propellants. AP as oxidizer in solid propellants and hydrazine as liquid monopropellant (Brown, 1995; Sutton and Biblarz, 2001). These propellants are well known for their good performance characteristics, but their limitations and liabilities regarding toxicity, operational handling and ...
Larsson, Anders, Wingborg, Niklas
openaire   +3 more sources

Dynamic Current Routing in Conductive Liquid Crystal Elastomers for Complex Deformation Actuators

open access: yesAdvanced Materials Technologies, EarlyView.
This work introduces a novel actuation control strategy in which electrical stimulation generates localized Joule heating in conductive liquid crystal elastomer (LCE) surfaces, enabling complex 3D deformations from a single homogeneous surface without preprogramming.
Gloria PouWai Lei   +2 more
wiley   +1 more source

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

open access: yesAerospace
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   +3 more
doaj   +1 more source

Advanced techniques for determining long term compatibility of materials with propellants [PDF]

open access: yes
A method for the prediction of propellant-material compatibility for periods of time up to ten years is presented. Advanced sensitive measurement techniques used in the prediction method are described.
Green, R. L.   +3 more
core   +1 more source

Tunable Applicator for Microneedle‐Based Medical Devices

open access: yesAdvanced Materials Technologies, EarlyView.
This paper presents a simple, low‐cost tunable applicator (TAPP) for microneedle array patches that uses a material‐agnostic controlled‐fracture mechanism to ensure reliable skin penetration and uniform array engagement. The scalable, modular design is compatible with injection molding and 3D printing, can be integrated directly into patches, and is ...
Dan Ilyn   +9 more
wiley   +1 more source

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

open access: yesEnergetic 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   +4 more
doaj   +1 more source

Development of Electric and Chemical Microthrusters

open access: yesInternational 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

The investigation of flame spreading over the surface of igniting solid propellants Final summary report [PDF]

open access: yes
Flame spreading over surface of igniting solid propellants in different gas mixtures at various ...
Magee, R. S., Mc Alevy, R. F., III
core   +1 more source

Magnetic Textiles: A Review of Materials, Fabrication, Properties, and Applications

open access: yesAdvanced Materials Technologies, EarlyView.
Magnetic textiles (M‐textiles) are emerging as a programmable materials platform that merges magnetic matter with hierarchical textile structures. This article consolidates magnetic material classes, textile architectures, and fabrication and magnetization strategies, revealing structure–property–function relationships that govern magneto‐mechanical ...
Li Ke   +3 more
wiley   +1 more source

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