Results 81 to 90 of about 18,216,246 (286)

STATIC STIFFNESS MODELING AND SENSITIVITY ANALYSIS OF SHIELD PROPULSION SYSTEM BASED ON VIRTUAL DISPLACEMENT PRINCIPLE

Jixie qiangdu, 2023
Propulsion system is an important part of shield machine, and its stiffness will affect the propelling and steering function. In order to obtain the effective parameterized stiffness model of shield propulsion system, and to accurately describe the ...
XU YouNan, SHI ZiQuan, HE Liu, CHU Hang
doaj  

Microscale Patterning of Ultrahigh‐Viscosity Metallic‐Polymer Composites via Embedded Droplet Writing

Advanced Functional Materials, EarlyView.
A hybrid additive manufacturing platform integrates direct droplet writing of metallic composite with VAT photopolymerization to fabricate architected soft magnetic composites. This approach enables microscale patterning of high‐viscosity materials for programmable actuators, adaptive fluidic devices, and switchable adhesives, offering tunable ...
Yeowon Yoon, Jian Ni, Sungmo Park, Yang Xu, Yong Chen   +4 more
wiley   +1 more source

Unusual and persistent easterlies restrained the 2023/24 El Niño development after a triple-dip La Niña

npj Climate and Atmospheric Science
The 2023/24 El Niño, emerging after a rare triple-dip La Niña, garnered global attention due to its potential to evolve into an extreme event, given the largest accumulation of warm water in the equatorial western Pacific since 1980.
Ji-Won Kim, Baijun Tian, Jin-Yi Yu
doaj   +1 more source

Numerical simulation and process parameter optimization of the eccentric injection stirring hot metal desulfurization process based on mass transfer kinetics

Case Studies in Thermal Engineering
As the demand for cleaner high-grade steels increases, sulfur mass transfer during hot-metal desulfurization has become a key limitation affecting steel quality, making mass-transfer intensification in the KR process an important research topic.
Chao Lv, Ning Wei, Xin Zhang, Xiao-Jie Wang, Xiao-Yu Wang, Hong-Liang Zhao   +5 more
doaj   +1 more source

Fabrication and Testing of the Cold Gas Propulsion System Flight Unit for the Adelis-SAMSON Nano-Satellites

Aerospace, 2019
Adelis-SAMSON is a nano-satellite mission aimed at performing geo-location of target signals on Earth using a tight three-satellite formation in space. To maintain formation, each nano-satellite is equipped with a cold gas propulsion system.
Michael Zaberchik, Dan R. Lev, Eviatar Edlerman, Avner Kaidar   +3 more
doaj   +1 more source

Bioinspired Propulsion System for a Thunniform Robotic Fish. [PDF]

Biomimetics (Basel), 2022
Mitin I, Korotaev R, Ermolaev A, Mironov V, Lobov SA, Kazantsev VB.   +5 more
europepmc   +1 more source

Genetically Programmed Shape‐Morphing of Engineered Living Materials

Advanced Functional Materials, EarlyView.
Here, bacterial and mammalian engineered living materials (ELMs) are presented, in which living cells direct genetically programmed and enzymatically mediated shape‐morphing. The resulting deformation and shape‐recovery can be actuated in a genetically controlled manner by an ELM incorporating out‐of‐equilibrium counteracting biochemical reactions with
Jan Becker, Yuchen Liu, Miguel Baños, Rosanne Schmachtenberg, Mahmudul Hasan, Claudia Fink‐Straube, Luai R. Khoury, Wilfried Weber   +7 more
wiley   +1 more source

Electric Propulsion System for a Maneuverable Orbital Vehicle

, 2003
This paper presents a proposed maneuverable orbital vehicle based on the International Space Station (ISS) equipped with electric thrusters. The vehicle makes use of an external site of the ISS (e.g., the Express Pallet) to host a detachable platform ...
CECCANTI F, MARCUCCIO, SALVO
core  

Proceedings - Space Transportation System Propulsion Technology Conference. Volume 2 - Auxiliary propulsion system [PDF]

, 1971
Conference on auxiliary propulsion system performance and configurations for space shuttle applications - Vol.

core  

In-orbit demonstration of an iodine electric propulsion system. [PDF]

Nature, 2021
Rafalskyi D, Martínez JM, Habl L, Zorzoli Rossi E, Proynov P, Boré A, Baret T, Poyet A, Lafleur T, Dudin S, Aanesland A.   +10 more
europepmc   +1 more source