Results 91 to 100 of about 60,070 (312)

An earth pole-sitter using hybrid propulsion [PDF]

open access: yes, 2010
In this paper we investigate optimal pole-sitter orbits using hybrid solar sail and solar electric propulsion (SEP). A pole-sitter is a spacecraft that is constantly above one of the Earth's poles, by means of a continuous thrust.
Colin R. Mcinnes   +4 more
core   +1 more source

Swelling‐Programmed Topographical Guidance for Dynamic Spheroid Self‐Assembly via a Mechanochemical Hydrogel Niche

open access: yesAdvanced Functional Materials, EarlyView.
A swelling‐programmed micropatterned hydrogel guides adherent cells through a controlled transition from cell–matrix anchoring to cadherin‐mediated cell–cell compaction, enabling rapid assembly of high‐viability spheroids with defined size and morphology.
Han Gyeol Nam   +8 more
wiley   +1 more source

Displaced geostationary orbits using hybrid low-thrust propulsion [PDF]

open access: yes, 2010
In this paper, displaced geostationary orbits using hybrid low-thrust propulsion, a complementary combination of Solar Electric Propulsion (SEP) and solar sailing, are investigated to increase the capacity of the geostationary ring that is starting to ...
Heiligers, J.
core  

Novel pole-sitter mission concepts for continuous polar remote sensing [PDF]

open access: yes, 2012
The pole-sitter concept is a solution to the poor temporal resolution of polar observations from highly inclined, low Earth orbits and the poor high latitude coverage from geostationary orbit.
Jeannette Heiligers   +8 more
core   +1 more source

Texoskeletons: Developing the Fundamental Technologies for Creating Intelligent Soft Robotic Clothing With Integrated 1D Sensors and Actuators

open access: yesAdvanced Functional Materials, EarlyView.
ABSTRACT Traditional wearable exoskeletons rely on rigid structures, which limit comfort, flexibility, and everyday usability. This work introduces the fundamental technologies to create the first soft, lightweight, intelligent textile‐based exoskeletons (Texoskeletons) built using 1D sensors and actuators.
Amy Lukomiak   +19 more
wiley   +1 more source

Numeral simulation of solution mixing effect and product preparation effect in the process of preparing cerium oxide by microwave heating

open access: yesCase Studies in Thermal Engineering
Microwave heating has the characteristics of simple control and high efficiency, in which electromagnetic force plays an important role. Using the UDF function and energy equation in FLUENT software, the electromagnetic force model in the tube is ...
Chao Lv   +5 more
doaj   +1 more source

Kite dynamics for ship propulsion [PDF]

open access: yes, 2013
Kite propulsion has emerged as an attractive means to harness wind power in a way that yields environmental and financial benefits. An understanding of the dynamics that affect kite motion and the resulting forces is required to facilitate the design and
Dadd, George M.
core  

Machine Learning‐Assisted Inverse Design of Soft and Multifunctional Hybrid Liquid Metal Composites

open access: yesAdvanced Functional Materials, EarlyView.
A machine learning framework is presented for inverse design of synthesizable multifunctional composites containing both liquid metal and solid inclusions. By integrating physics‐based modeling, data‐driven prediction, and Bayesian optimization, the approach enables intelligent design of experiments to identify optimal compositions and realize these ...
Lijun Zhou   +5 more
wiley   +1 more source

A Novel Physics-Informed Hybrid Deep Learning Framework for Fault Detection and Diagnosis in Cyber Physical Systems

open access: yesIEEE Access
Cyber-physical systems (CPS) integrate computational algorithms and physical systems, facilitating coherent communication between the digital and physical world.
K. K. Smitha   +4 more
doaj   +1 more source

Thermal Protection System and Thermal Management for Combined-Cycle Engine: Review and Prospects

open access: yesEnergies, 2019
Combined-cycle engine is a potential propulsion system for hypersonic aircraft. To ensure long-term, normal operation of combined-cycle engine under the harsh environment of high thermal load, it is of great significance to study the thermal protection ...
Yiwei Dong   +4 more
doaj   +1 more source

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