Results 71 to 80 of about 129,630 (391)
, 2017 Cold-spray techniques have been a significant development for depositing metal coatings in recent years. In cold-spray processes, inexpensive nitrogen gas is widely used as the propellant gas in many industries.
S. Adachi, N. Ueda
semanticscholar +1 more source
Electric Solid Propellant Ablation in an Arc Discharge
Journal of Propulsion and Power, 2019 Electric solid propellants are advanced solid chemical rocket propellants that can be controlled (ignited, throttled, and extinguished) through the application and removal of an electric current.
M. S. Glascock, J. Rovey, K. Polzin
semanticscholar +1 more source
Advanced Functional Materials, EarlyView.Two‐photon lithography (TPL) enables 3D magnetic nanostructures with unmatched freedom in geometry and material choice. Advances in voxel control, deposition, and functionalization open pathways to artificial spin ices, racetracks, microrobots, and a number of additional technological applications.
Joseph Askey +5 more
wiley +1 more source
Solid propellant rocket motor [PDF]
, 1973 The characteristics of a solid propellant rocket engine with a controlled rate of thrust buildup to a desired thrust level are discussed. The engine uses a regressive burning controlled flow solid propellant igniter and a progressive burning main solid ...
Behm, J. W. +3 more
core +1 more source
AerospaceDetailed knowledge regarding the thermophysical properties and electrical conductivity of the combustion products derived from solid propellants is essential for the optimized design and operation of solid-fuel rocket engines employing ...
Chunlin Chen +5 more
doaj +1 more source
Advanced Functional Materials, EarlyView.This work proposes a dual‐surface reaction strategy to optimize the interfacial contacts in organic–inorganic photodetectors. 1,4,5,8,9,11‐hexaazatriphenylene hexacarbonitrile (HAT‐CN) and ytterbium layers are designed to react with the Si surface, thus minimizing noise.
Yibo Zhang +9 more
wiley +1 more source
Journal of Aerospace Technology and Management, 2013 http://dx.doi.org/10.5028/jatm.v5i2.229 حفز البحث عن السمية المنخفضة وعدم الإضرار بالبيئة على تطوير خطوط تحقيق محددة في العديد من المجالات. حتماً، لا تزال معايير المناولة الآمنة والحساسية، وقبل كل شيء، الدوافع (الكفاءات) المحددة لتركيبات الوقود الدافع متفوقة فيما يتعلق بالنداءات البيئية.
Gilson da Silva +2 more
openaire +5 more sources
Charge‐Induced Morphing Gels for Bioinspired Actuation
Advanced Functional Materials, EarlyView.This study introduces a novel electroactive actuation mechanism that enables the gel material to generate substantial and reversible shape‐changing while preserving topological and isochoric (volumetric) equivalence. The resultant morphing behaviors can mimic the movements of muscle‐driven organelles in nature, including cilia‐like beating and ...
Ciqun Xu +4 more
wiley +1 more source
Two-fluid, impinging-sheet injector [PDF]
, 1968 Two-fluid, impinging-sheet propellant injector reduces the severe erosion found to occur when ejector elements are directly exposed during throttling without the benefits of a cooling flow of the propellant liquids.
Riebling, R. W.
core +1 more source
Microsphere Autolithography—A Scalable Approach for Arbitrary Patterning of Dielectric Spheres
Advanced Functional Materials, EarlyView.MicroSphere Autolithography (µSAL) enables scalable fabrication of patchy particles with customizable surface motifs. Focusing light through dielectric microspheres creates well defined, tunable patches via a conformal poly(dopamine) photoresist. Nearly arbitrary surface patterns can be achieved, with the resolution set by the index contrast between ...
Elliott D. Kunkel +3 more
wiley +1 more source