Results 81 to 90 of about 10,512 (232)
Magnetic bearing flywheels, characterized by frictionless operation and long service life, are increasingly recognized as promising actuators for spacecraft attitude control.
Yuan Zeng, Peng Xiao, Jingbo Wei
doaj +1 more source
Membrane Engineering for Battery Systems: Bridging Design Principles and Frontier Applications
The review emphasizes membrane separators' role in battery performance and safety, covering redox flow, lithium‐ion, and solid‐state batteries. It reviews advances in membrane materials (e.g., polymer electrolytes, hybrid composites) and ion transport mechanisms, while addressing challenges like dendrite growth and crossover losses.
Xiaoqun Zhou +3 more
wiley +1 more source
This paper explores global solar PV deployment, cost trends, and grid integration challenges in 2025. It examines the role of energy storage in firming solar output and supporting electric vehicle (EV) growth, alongside policy shifts, investment flows, and technological innovations.
Ehsan Rezaee, S. Ravi P. Silva
wiley +1 more source
A new design of a variable flywheel for the internal combustion engine is suggested.
A. Ilchenko, V. Lomakin
openaire +1 more source
A laboratory facility for electric vehicle propulsion system testing [PDF]
The road load simulator facility located at the NASA Lewis Research Center enables a propulsion system or any of its components to be evaluated under a realistic vehicle inertia and road loads.
Sargent, N. B.
core +1 more source
Observer-biased bearing condition monitoring: from fault detection to multi-fault classification [PDF]
Bearings are simultaneously a fundamental component and one of the principal causes of failure in rotary machinery. The work focuses on the employment of fuzzy clustering for bearing condition monitoring, i.e., fault detection and classification.
Cabrera, Diego +6 more
core +1 more source
Free-flying solar reflector spacecraft [PDF]
Results of investigations of requirements and design concepts for large solar-reflecting spacecraft are given. The emphasis is on the one kilometer diameter self contained spacecraft that can be packaged and launched in the space shuttle.
Hedgepeth, J. M.
core +1 more source
Sizing and Energy Management of a Hybrid Locomotive Based on Flywheel and Accumulators [PDF]
The French National Railways Company (SNCF) is interested in the design of a hybrid locomotive based on various storage devices (accumulator, flywheel, and ultracapacitor) and fed by a diesel generator.
Akli, Cossi Rockys +4 more
core +2 more sources
Internal combustion engines have been a major contributor to air pollution. Replacing these engines with electric propulsion systems presents significant challenges due to different countries’ needs and limitations.
Daniel Silva Cardoso +3 more
doaj +1 more source
Simulation and Test Study of Transmission Rattle Sensitivity
Taking a DCT transmission preliminary gear 3 to 2 as an example,through the analysis of rattle theory and influence factors,the precise comparison verification result between simulation and test of rattle sensitivity are obtained.
Lü Pin +5 more
doaj

