Results 121 to 130 of about 11,483,688 (354)
Beyond Earth: Resilience of Quasi‐2D Perovskite Solar Cells in Space
Advanced Materials, EarlyView.In the article (DOI: 10.1002/adma.202520433), Christoph Putz and co‐workers demonstrate rigid quasi‐2D perovskite solar cells operating in low Earth orbit, delivering stable power for more than 100 days under real‐space conditions. In‐orbit performance is correlated with extensive ground‐based thermal and proton‐irradiation studies on rigid and ...
Christoph Putz +17 more
wiley +1 more source
Propeller blockage research needs [PDF]
The effect of mutual propeller/nacelle of fuselage interference on aircraft propulsive efficiency is studied in order to determine accurate drag levels from flight test data by accurately estimating installed thrust and drag and the resulting aircraft ...
Tumlinson, R. R.
core +1 more source
Unsteady Propulsion by an Intermittent Swimming Gait
, 2017 Inviscid computational results are presented on a self-propelled swimmer modeled as a virtual body combined with a two-dimensional hydrofoil pitching intermittently about its leading edge.
Akoz, Emre, Moored, Keith W.
core +1 more source
Photochemical Fuel Carrier Molecules for Robotic Embodied Energy
Advanced Materials, EarlyView.We designed a novel fuel carrier photoresponsive molecule for on‐demand energy storage and release. Carrier molecules undergo bond scission under UV light to release chemical fuel and locally generate propulsive Marangoni flows. We demonstrate this photochemical embodied energy strategy in small‐scale robots and active matter systems, enabling ...
Chuqi Huang +6 more
wiley +1 more source
Effect of hybrid-heave motions on the propulsive performance of an oscillating airfoil
Journal of Fluids and Structures, 2019 Inspiration for a number of unsteady aerodynamics studies has been gathered from biology, mimicking locomotion of birds, insects, and fish. We instead employ a sports-mimetic approach to study unsteady airfoil motions inspired by sail dynamics.
J. Young +3 more
semanticscholar +1 more source
A method of determining the dimensions and horsepower of an airship for any given performance [PDF]
A simple and easily applied method of calculating the dimensions and horsepower necessary for an airship to have any given performance is described and illustrated by examples.
Burgess, C P
core +1 more source
Morphology, Swimming Performance and Propulsive Mode of Six Co-occurring Hydromedusae [PDF]
, 2002 Jet propulsion, based on examples from the Hydrozoa, has served as a valuable model for swimming by medusae. However, cnidarian medusae span several taxonomic classes (collectively known as the Medusazoa) and represent a diverse array of morphologies and
Colin, Sean, Costello, John H.
core +2 more sources
Advanced Materials, EarlyView.This work introduces an atomic‐level engineered bimetallic MOF Platform that resolves the inherent trade‐off between environmental stability and propulsion efficiency. By integrating robust Fe‐O bonds for hydrolysis resistance and enabling d‐orbital charge transfer (Fe3+→Cu2+) for enhanced photothermal conversion, the design achieves a highly durable ...
Senlin Rao +3 more
wiley +1 more source
Arm Propulsion in Front Crawl Stroke
SportsObjectives: This study aims to determine the propulsive force and effective arm area contributed by the propulsion through the dynamic balance (power balance) between drag and propulsive power in swimming crawl performance.
Cristian Romagnoli +2 more
doaj +1 more source
Interphase Self‐Optimization Enables Stable Magnesium Anode in Hydrogel Electrolyte
Advanced Materials, EarlyView.Based on a MgCl2 hydrogel electrolyte, we identify a tridentate chelant additive to construct a magnesium oxychloride interphase on Mg metal anodes. This self‐optimized interphase enables low‐resistance Mg2+ stripping/plating, resulting in much elongated cycling life of 600 h with 0.24 V nucleation overpotential.
Xinyuan Zhang +4 more
wiley +1 more source