Results 61 to 70 of about 1,634,010 (308)

Hybrid Electric Propulsion [PDF]

Mechanical Engineering, 2020
Abstract Electrified propulsion holds the promise of reducing aviation’s CO2 emissions footprint through three means: access to green grid electric energy, improvements in aircraft performance through new airframe and propulsion system architectures and enabling further optimization of the gas turbine cycle.
openaire   +1 more source

Direct Metal Deposition of Graphene–Ti28Nb35.4Zr Matrix Composites With Enhanced Mechanical, Corrosion, and Biocompatibility Properties for Bone Implants

Advanced Engineering Materials, EarlyView.
Graphene nanoplatelet (0.1 wt.%) reinforcement significantly enhances the performance of β Ti‐28Nb‐35.4Zr alloy. Grain refinement, reduced water contact angle, and improved surface characteristics promote osteoblast adhesion and complete surface coverage after 7 days.
Khurram Munir, Jixing Lin, Yuncang Li, Li Zhu, Paul F. A. Wright, Cuie Wen   +5 more
wiley   +1 more source

Preliminary Design of Regional Aircraft—Integration of a Fuel Cell-Electric Energy Network in SUAVE

Aerospace
To enable climate-neutral aviation, improving the energy efficiency of aircraft is essential. The research project Synergies of Highly Integrated Transport Aircraft investigates cross-disciplinary synergies in aircraft and propulsion technologies to ...
Jakob Schlittenhardt, Yannik Freund, Jonas Mangold, Richard Hanke-Rauschenbach, Andreas Strohmayer   +4 more
doaj   +1 more source

Performance Characteristics of Lubricants in Electric and Hybrid Vehicles: A Review of Current and Future Needs

Frontiers in Mechanical Engineering, 2020
Electric and hybrid vehicles are gaining increasing attention in recent years. The distinguished difference between electric/hybrid vehicles from conventional ones is the intermittent on-and-off control of the internal combustion engine, whereas the ...
Yan Chen, Swarn Jha, Ajinkya Raut, Wenyang Zhang, Hong Liang, Hong Liang   +5 more
doaj   +1 more source

An investigation on the effect of driver style and driving events on energy demand of a PHEV [PDF]

, 2012
Environmental concerns, security of fuel supply and CO2 regulations are driving innovation in the automotive industry towards electric and hybrid electric vehicles.
McGordon, Andrew, Brahmadevan Rajan, Paul Jennings, Andrew McGordon, Padmarajan, Brahmadevan V., Jennings, P. A. (Paul A.)   +5 more
core   +1 more source

Designing Polymer Nanocomposites for X‐Ray Shielding: Mechanisms, Architectures, and Scalable Processing

Advanced Engineering Materials, EarlyView.
This review highlights advances in lightweight, lead‐free polymer nanocomposites for diagnostic X‐ray shielding. By linking filler chemistry, dispersion, architecture, and photon interaction mechanisms, it establishes structure–performance relationships guiding material design.
Aklilu G. Messele, Hossein Ipakchi, Tizazu H. Mekonnen   +2 more
wiley   +1 more source

Reliability evaluation of islanded DC microgrid considering electric-hydrogen hybrid energy storage

电力工程技术, 2023
An effective way is provided by the electric-hydrogen hybrid energy storage to improve the reliability of islanded DC microgrids. However, the reliability level of the system will also be affected by different electric-hydrogen hybrid energy storage ...
YUE Dawei, ZHAO Wenti, YUAN Hanghang, YANG Mingzhe, JIANG Yi, LI Lianbing   +5 more
doaj   +1 more source

Machine Learning‐Supported Analysis for Predicting and Visualizing Nonlinear Relationships Between Material Properties in Electroplated Chromium Layers

Advanced Engineering Materials, EarlyView.
This study applies machine learning regression to predict chromium layer thickness in decorative trivalent chromium electroplating, using 441 experiments from laboratory‐scale (1L) and pilot‐scale (14L) setups. Tree‐based models, particularly CatBoost, outperformed linear regression by capturing nonlinear parameter interactions (R2$R^2$ up to 0.77 ...
Christoph Baumer, Christopher Mai, Luca Eisentraut, Andreas Bund, Ricardo Buettner   +4 more
wiley   +1 more source

An Endurance Equation for Hybrid-Electric Aircraft

Aerospace
This paper introduces a new endurance equation for a hybrid-electric aircraft. This research follows the derivation of a range equation for a hybrid-electric aircraft case using constant power split that was carried out by authors in their earlier work ...
Aman Batra, Reiko Raute, Robert Camilleri   +2 more
doaj   +1 more source

A review of micro and mild hybrid systems

Energy Reports, 2020
The CO2 legislation has become more restrictive over time, and to reach the goals imposed by this legislation the automotive industry saw in the hybrid vehicles a solution.
Daniel S. Cardoso, Paulo O. Fael, António Espírito-Santo   +2 more
doaj   +1 more source