Results 71 to 80 of about 21,305 (311)

Design and Development of Hybrid-Electric Propulsion Model for Aeronautics [PDF]

MATEC Web of Conferences, 2019
Nowadays, worldwide environmental issue, associated to reduction of pollutant and greenhouse emissions are gaining considerable attention. Aviation sector contribution to the whole CO2 released accounts to around 2%, but it is expected to grow in the next future due to increase of demand.
Emma Frosina, Adolfo Senatore, Davide Lauria, Giuseppe Di Lorenzo, Ciro Pascarella, Luigi De Petrillo, Salvarore Curreri, Giudo Saccone, Marcello Kivel Mazuy   +8 more
openaire   +3 more sources

Dual‐Mode Magnetic Elastomer for On‐Demand Motion and Degradation

Advanced Functional Materials, EarlyView.
A dual‐mode magnetic elastomer is introduced, enabling DC field‐driven programmable actuation and AC field‐driven magnetothermal degradation. GHz‐range magnetic fields generate ultrafast heating of magnetic nanoparticles that activates cleavage of the silicone elastomer matrix.
Jieun Han, Hyun An, Min‐Ha Oh, Yu‐Lim Lee, Woojin Jeon, Kyung‐Sub Kim, Jae‐Hwan Lee, Seungmin Kang, Yoon‐Nam Kim, Ji‐Won Kang, Daewhan Kim, Min Sang Kwon, Sang‐Koog Kim, Seung‐Kyun Kang   +13 more
wiley   +1 more source

3D Printing Innovations in Polymeric Porous and Patterned Architecture

Advanced Functional Materials, EarlyView.
Polymeric foams occupy a unique structural space between dense solids and open networks, where engineered void fraction governs mechanical compliance, thermal resistance, and mass transport. Additive manufacturing now enables precise spatial control over cellular architecture, unlocking designer foam structures across applications spanning crash ...
Dhanush Patil, Sri Vaishnavi Thummalapalli, Clarissa Westover, Arunachalam Ramanathan, M. Taylor Sobzcak, Roumika Patil, Qixuan Xiang, Tiantian Li, Sui Yang, Timothy E. Long, Hongyue Sun, Xianqiao Wang, Yang Liu, Kenan Song   +13 more
wiley   +1 more source

Modelling and control of a light-duty hybrid electric truck [PDF]

, 2006
This study is concentrated on modelling and developing the controller for the light-duty hybrid electric truck. The hybrid electric vehicle has advantages in fuel economy.
Park, Jong-Kyu
core  

Experimental Research on the Energy Efficiency of a Parallel Hybrid Drive for an Inland Ship

Energies, 2019
The growing requirements for limiting the negative impact of all modes of transport on the natural environment mean that clean technologies are becoming more and more important.
Wojciech Litwin, Wojciech Leśniewski, Daniel Piątek, Karol Niklas   +3 more
doaj   +1 more source

Flight Time Optimization and Modeling of a Hybrid Gasoline–Electric Multirotor Drone: An Experimental Study

Aerospace, 2022
Drones have evolved rapidly over the decades, but the limited flight time inhibits multirotor drones from performing long-duration tasks. Batteries that power drones are considered an inadequate power source due to their low energy density.
Khaled Jarrah, Yazen Alali, Alyssa Lalko, Osamah Rawashdeh   +3 more
doaj   +1 more source

Chiral Phase Change Nanomaterials

Advanced Functional Materials, EarlyView.
This work demonstrates reversible, non‐volatile phase transitions in chiral Ge2${\rm Ge}_2$Sb2${\rm Sb}_2$Te5${\rm Te}_5$ (GST) nanohelices for high‐speed optical modulation of chirality and dynamic control of the state of polarization (SOP). The chiral nanostructures are fabricated using a highly directional, wafer‐scale physical vapor deposition ...
Joshua A. Burrow, Md Shah Alam, Riad Yahiaoui, Evan M. Smith, Ryan Laing, Jules Gardener, Thomas A. Searles, Piyush J. Shah, Shivashankar Vangala, Joshua R. Hendrickson, Andrew M. Sarangan, Imad Agha   +11 more
wiley   +1 more source

Design of optimal Earth pole-sitter transfers using low thrust propulsion [PDF]

, 2011
Recent studies have shown the feasibility of an Earth pole-sitter mission using low-thrust propulsion. This mission concept involves a spacecraft following the Earth's polar axis to have a continuous, hemispherical view of one of the Earth's poles.
Biggs, James, Biggs, J.D., BIGGS, JAMES DOUGLAS, Heiligers, Jeannette, McInnes, Colin, Ceriotti, Matteo, Heiligers, J., Ceriotti, M., Mcinnes, Colin R., McInnes, C.R.   +9 more
core   +1 more source

Blood Biomarkers and Surface‐Enhanced Raman Spectroscopy for Gout: A Comprehensive Review

Advanced Functional Materials, EarlyView.
Schematic illustrating gout disease progression from asymptomatic hyperuricemia to chronic tophaceous disease, highlighting the limitations of conventional imaging and biochemical diagnostics and the potential of engineered SERS platforms for ultrasensitive blood‐based detection of urate‐related biomarkers across disease stages, with the color gradient
Isuri Perera, Chiranjeevi Kanike, Appurva Tiwari, Hongyan Wu, Larry D. Unsworth, Ben Bin Xu, Xuehua Zhang   +6 more
wiley   +1 more source

Hybrid-electric propulsion retrofits in regional aviation – A review

Next Sustainability
Hybrid-electric propulsion systems are being explored as a promising way to improve the environmental performance of regional aircraft. This paper examines the potential for retrofitting hybrid-electric propulsion systems into existing regional aircraft,
God’sable Sitsofe Koku Aidam, Richard Opoku, Eunice Akyereko Adjei, Francis Davis, David Kofi Oppong, Amos Narh   +5 more
doaj   +1 more source