Results 91 to 100 of about 117,159 (342)

An automatically-shifted two-speed transaxle system for an electric vehicle [PDF]

An automatic shifting scheme for a two speed transaxle for use with an electric vehicle propulsion system is described. The transaxle system was to be installed in an instrumented laboratory propulsion system of an ac electric vehicle drive train.
Gordon, H. S., Hassman, G. V.
core   +1 more source

Unusual Swelling Behavior of Hydrogels Modified with Spiropyran as Appendage or Crosslinker

Advanced Functional Materials, EarlyView.
Not so innocent after all—spiropyran crosslinkers in methylenebisacrylamide‐crosslinked poly(acrylamide‐co‐acrylic acid) hydrogels increase crosslinking density, but also, counterintuitively, increase swelling. Charge complexation, cooperative chemo‐mechanical effects, and aggregation may explain these observations.
Michael M. Lerch, Ankita Shastri, Thomas B. H. Schroeder, Amos Meeks, Shucong Li, Anna V. Shneidman, Michael Aizenberg, Joanna Aizenberg   +7 more
wiley   +1 more source

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

A novel interplanetary communications relay [PDF]

, 2010
A case study of a potential Earth-Mars interplanetary communications relay, designed to ensure continuous communications, is detailed. The relay makes use of orbits based on artificial equilibrium points via the application of continuous low thrust ...
Andersson G., Baig S., Forward R. L., Leipold M., McInnes C. R., McInnes C. R., Mengali G., PolarOrbiter, Sail MissionPerformance, Simo J., Systems, Trajectories, West J. L.   +12 more
core   +1 more source

A Smart Magnetically Actuated Flip‐Disc Programmable Metasurface with Ultralow Power Consumption for Real‐Time Channel Control

Advanced Functional Materials, EarlyView.
The study proposes a 1‐bit programmable metasurface based on flip‐disc display, named flip‐disc metasurface (FD‐MTS). This new design enables ultralow energy consumption while maintaining coding patterns. It also exhibits high scalability and multifunctional flexibility.
Jiang Han Bao, Che Liu, Jia Cheng Li, Zhen Hao Fu, Yi Su Huang, Si Qi Huang, Lei Zhang, Jian Wei You, Tie Jun Cui   +8 more
wiley   +1 more source

Wind Tunnel Performance Tests of the Propellers with Different Pitch for the Electric Propulsion System. [PDF]

Sensors (Basel), 2021
Czyż Z, Karpiński P, Skiba K, Wendeker M.   +3 more
europepmc   +1 more source

Characteristics of primary electric propulsion systems [PDF]

The use of advanced electric propulsion systems is expected to provide cost and performance benefits for future energetic space missions. A methodology to predict the characteristics of advanced electric propulsion systems was developed and programmed ...
Byers, D. C.
core   +1 more source

Coordinated Multi‐Component Gradient Engineering of Catalyst Layers for Advanced Polymer Electrolyte Fuel Cells

Advanced Functional Materials, EarlyView.
This work presents a continuous linear gradient catalyst layer design, a general strategy for improving membrane electrode assemblies across electrochemical devices. Fabricated via a dual‐nozzle spray coating method, the architecture controls the Pt/carbon ratio, ionomer content and ionomer type across the catalyst layer, enhancing proton conduction ...
Shangwei Zhou, Matt P. Tudball, Yiming Guo, Bia Brandt, Adam Zucconi, Wenjia Du, Junfu Bu, Daniel H. C. Wan, Jianuo Chen, Emanuele Magliocca, Feng Ryan Wang, Alexander J.E. Rettie, Patrick S. Grant, Paul R. Shearing, Rhodri Jervis, Thomas S. Miller   +15 more
wiley   +1 more source

Electric power consumption predictive modeling of an electric propulsion ship considering the marine environment

International Journal of Naval Architecture and Ocean Engineering, 2019
This study predicts the power consumption of an Electric Propulsion Ship (EPS) in marine environment. The EPS is driven by a propeller rotated by a propulsion motor, and the power consumption of the propeller changes by the marine environment.
Chae-og Lim, Byeong-cheol Park, Jae-chul Lee, Eun Soo Kim, Sung-chul Shin   +4 more
doaj   +1 more source

Feasibility of Electrified Propulsion for Ultra-Efficient Commercial Aircraft Final Report [PDF]

MIT, Aurora Flight Sciences, and USC have collaborated to assess the feasibility of electric, hybridelectric, and turbo-electric propulsion for ultra-efficient commercial transportation.
Byahut, S., Courtin, C., Dowdle, A.P., Gonzalez, J.J., Greitzer, E.M., Hall, D.K., Hoburg, W.W., Kruger, M., Lang, J.H., Sabnis, J.S., Spakovszky, Z.S., Thalheimer, W., Trollinger, L., Tylko, J., Uranga, A., Varney, N., Yutko, B.   +16 more
core   +1 more source