Results 61 to 70 of about 422,101 (236)

Stakeholder Alignment Around Technological Pathways in Early‐Stage Sustainability Transitions: A Study of Stakeholder‐Perceived Stakes in Aviation Decarbonization

Business Strategy and the Environment, EarlyView.
ABSTRACT This paper examines how stakeholder groups become aligned or remain misaligned around alternative technological pathways during early‐stage sustainability transitions. We develop the concept of stakeholder‐perceived stakes, capturing how stakeholder groups evaluate technological pathways through perceived drivers and holdbacks, and how these ...
Helén Anderson, León Poblete
wiley   +1 more source

NASA Research in Aircraft Propulsion [PDF]

Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; Process Industries; Technology Resources; General, 1982
This report presents a broad overview of the scope of research presently being supported by NASA in aircraft propulsion. Aircraft systems work is performed to identify the requirements for the propulsion system that enhance the mission capabilities of the aircraft.
openaire   +1 more source

Innovation and Growth Investment Through Capital Expenditure as a Channel and Boundary Condition Between Financial Performance and Corporate Reputation

Corporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT This study examines the role of capital expenditure in the relationship between financial performance and corporate reputation. Using moderation and mediation analyses based on multiple regressions with bootstrapping, we examined data from 121 airlines from 46 countries during 2007–2023.
Larissa M. Batrancea, Andreas‐Daniel Cocis, Ioan Dan Morar   +2 more
wiley   +1 more source

Analysis of Interactions Among Loss-Generating Mechanisms in Axial Flow Turbines

International Journal of Turbomachinery, Propulsion and Power
Accurate loss prediction since the preliminary design steps is crucial to improve the development process and the aerodynamic performance of turbines.
Greta Raina, Yannick Bousquet, David Luquet, Eric Lippinois, Nicolas Binder   +4 more
doaj   +1 more source

Water Electrolysis Technologies for Extraterrestrial Water Resource Conversion

EcoEnergy, EarlyView.
This paper reviews four water electrolysis technologies for extraterrestrial water conversion: alkaline water electrolysis, proton exchange membrane water electrolysis, solid oxide water electrolysis, and anion exchange membrane water electrolysis. It elaborates on their mechanisms, components, and integration, highlighting challenges such as water ...
Yawen Jiang, Yuan Zhao, Lin Zu, Lili Ling, Yongwei Zhao, Jun Di, Pin Song   +6 more
wiley   +1 more source

Flow field and emission characterization of a novel enclosed jet-in-hot-coflow canonical burner

Applications in Energy and Combustion Science
The jet-in-hot-coflow is a canonical combustion setup, which has been used in several studies to study Flameless/MILD combustion and auto-ignition of fuels.
Thimo van den Berg, Rishikesh Sampat, Arvind Gangoli Rao   +2 more
doaj   +1 more source

Multi-Objective Optimization Control for the Aerospace Dual-Active Bridge Power Converter

Energies, 2018
With the development of More Electrical Aircraft (MEA), the electrification of secondary power systems in aircraft is becoming more and more common. As the key power conversion device, the dual active bridge (DAB) converter is the power interface for the
Tao Lei, Cenying Wu, Xiaofei Liu
doaj   +1 more source

Recent Advances of Perovskite Oxides for Air Pollution Control Chemistry: The Closed Loop From Design to Application

EcoEnergy, EarlyView.
This review summarizes a descriptor‐guided framework for linking theoretical calculations, in situ/operando characterization, synthesis regulation, and application screening in functional materials. Emphasis is placed on dynamic structure–property relationships that enable low‐cost material design with enhanced activity, stability, and environmental ...
Yanyu Jin, Zezheng Tang, Hengfan Wu, Xing Yuan, Zongxiang Yang, Weijia An, Wenquan Cui, Xianguang Meng, Ying Xu, Junhua Li   +9 more
wiley   +1 more source

The Feasibility Test of Electric Propulsion Systems: Case Study for a Light and Fixed‐Wing Aircraft

Energy Science &Engineering, EarlyView.
ABSTRACT This study investigates the feasibility and performance of a fully electric propulsion system (EPS) integrated into a light fixed‐wing aircraft. The system consists of a 65 kW‐class electric motor, a high‐efficiency inverter, and dual lithium‐ion battery packs with a total capacity of 27 kWh—collectively engineered to fulfill both power ...
Byeong Gyu Gang
wiley   +1 more source

Fault Detection of Electric Motors via Symmetrized Dot Pattern‐Based Features

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT This study proposes a novel symmetrized dot pattern (SDP) approach using designed SDP‐based features, extracted from transformed vibration signals, for fault detection. These features describe the compactness, inclination, and shape of the “snowflake” diagram distributions.
Mario Spirto, Pierangelo Malfi, Armando Nicolella, Francesco Melluso, Chiara Cosenza, Sergio Savino, Vincenzo Niola   +6 more
wiley   +1 more source