Results 51 to 60 of about 55,752 (238)

HECATE: Hybrid ElectriC regional Aircraft distribution TEchnologies

, 2023
Overview of the Clean Aviation Joint Undertaking project HECATE - Hybrid ElectriC regional Aircraft distribution TEchnologies.
openaire   +1 more source

Are batteries fit for hybrid-electric regional aircraft?

Journal of Physics: Conference Series, 2023
Abstract Hybrid electric propulsion is likely to play a more prominent role for regional aircraft with 40+ passengers in the future air transport system with reduced climatic impact. In IMOTHEP, two hybrid-electric regional (HER) aircraft concepts, a conservative and a radical, are developed.
Kühnelt, Helmut, Mastropierro, Francesco, Zhang, Ningxin, Toghyani, Somayeh, Krewer, Ulrike   +4 more
openaire   +1 more source

Active Metamaterials with Tunable Shear Nonreciprocity and Nonlinear Dynamics

Advanced Science, EarlyView.
Active gear‐based mechanical metamaterials enable simultaneous control of translational and torsional stiffnesses by 30–100×, break shear reciprocity under positive versus negative loads, broadly tune resonant frequencies, and offer programmable dynamic responses.
Xin Fang, Miao Yu, Dianlong Yu, Li Cheng
wiley   +1 more source

Hybrid-electric power unit for an ultralight aircraft

Journal of Physics: Conference Series, 2023
Abstract High power-weight ratio, reliability and efficiency are the main design goals for the propulsion system of ultralight aircraft (mass up to 650 kg). For power outputs beyond 40 kW, 4-stroke multi-cylinder SI engines are the most widespread solution, while pure electric powertrains do not appear at the moment as a practical ...
Pisapia, A. M., Volza, A., Savioli, T., Martini, P., Mattarelli, E.   +4 more
openaire   +1 more source

Robust Reinforcement Learning Control Framework for a Quadrotor Unmanned Aerial Vehicle Using Critic Neural Network

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
Quadrotor unmanned aerial vehicle control is critical to maintain flight safety and efficiency, especially when facing external disturbances and model uncertainties. This article presents a robust reinforcement learning control scheme to deal with these challenges.
Yu Cai, Yefeng Yang, Tao Huang, Boyang Li   +3 more
wiley   +1 more source

Intelligent Fault-Tolerant Control for AC/DC Hybrid Power System of More Electric Aircraft

Aerospace, 2021
This paper presents a novel intelligent fault-tolerant control method for a kind of more electric aircraft AC/DC hybrid electrical power system, in order to ensure the safe operation of the engine and improve the power supply quality.
Lingfei Xiao, Robert R. Sattarov, Peisong Liu, Cong Lin   +3 more
doaj   +1 more source

High‐Speed Altitude Regulation With Neuromorphic Camera and Lightweight Embedded Computation

Advanced Intelligent Systems, EarlyView.
Neuromorphic cameras deliver rapid, high‐dynamic‐range sensing but overwhelm embedded processors at high speeds. This work presents a lightweight, optimized Lucas–Kanade optical flow method with parallelization, gyroscopic derotation, and adaptive event slicing.
Simon L. Jeger, Alessandro Marchei, Charbel Toumieh, Dario Floreano   +3 more
wiley   +1 more source

Life Cycle Assessment of Hybrid-Electric Aircraft Technologies—A Review

IEEE Access
Decarbonizing aviation is a critical goal for mitigating climate change, as the sector contributes significantly to global greenhouse gas emissions. Hybrid electric aircraft (HEA) represent a promising step towards reducing the environmental impact of ...
Aleksandra Zieminska-Stolarska, Mariia Sobulska, Daniel Izquierdo, Deborah Neumann Dela Cruz, Monika Pietrzak, Ireneusz Zbicinski   +5 more
doaj   +1 more source

Automated Feature Extraction and Classification of Submerged Cultural Heritage Assets in the Puck Lagoon via Multisensor Remote Sensing

Archaeological Prospection, EarlyView.
ABSTRACT This study presents a strong framework for the detection and classification of Submerged Cultural Heritage Assets (SCHA) in shallow marine environments using the integration of multibeam echosounder and airborne LiDAR bathymetry with object‐based image analysis and fuzzy logic–based classification.
Łukasz Janowski, Andrzej Pydyn, Mateusz Popek, Anna M. Kotarba‐Morley, Paweł Tysiąc   +4 more
wiley   +1 more source

Circular Economy Pathways for Airport Climate Change Mitigation

Business Strategy and the Environment, EarlyView.
ABSTRACT Airport operators face growing climate‐change pressures; the circular economy offers pathways to reduce impacts and recover resources. We examine how airport operators apply the circular economy in practice. We use an exploratory qualitative multicase design based on practitioner‐generated documents (e.g., press releases and sustainability ...
Michele Oppioli, Davide Calandra, Federico Lanzalonga, Paolo Biancone   +3 more
wiley   +1 more source