Results 31 to 40 of about 36,948 (236)
Internet of Things 36-rotor Multicopter for Ionizing Radiation Surveying
International Journal of Aviation, Aeronautics, and Aerospace, 2021 This paper presents an Internet of things 36-rotor unmanned aerial vehicle suitable for radiological surveying of buildings and facilities. The design of the 36-rotor multicopter platform is disclosed.
Svetoslav Zabunov +3 more
doaj +1 more source
Recent Developments and Trends in High-Performance PMSM for Aeronautical Applications
EnergiesPermanent magnet synchronous machines (PMSMs) have been widely used in various applications such as robotics, electric vehicles, and aerospace due to their fast dynamic response, high-power/torque density, and high efficiency.
Chendong Liao +2 more
doaj +1 more source
Terahertz Channel Modeling, Estimation and Localization in RIS‐Assisted Systems
Advanced Electronic Materials, EarlyView.Reconfigurable intelligent surfaces have become a recent intensive research focus. Based on practical applications, channel strategies for RIS‐assisted terahertz wireless communication systems are categorized into three different types: channel modeling, channel estimation, and channel localization.
Hongjing Wang +9 more
wiley +1 more source
Comparison of Fixed-Wing Unmanned Aircraft Systems (UAS) for Agriculture Monitoring
International Journal of Aviation, Aeronautics, and Aerospace, 2019 Florida citrus growers need inexpensive methods to observe citrus plants to detect disease and stress consistently. Health vegetation indices, such as the Normalized Difference Vegetation Index (NDVI) collected from Unmanned Aircraft Systems (UAS), can ...
Joseph Cerreta, Kristine M Kiernan
doaj +1 more source
First estimates of volume distribution of HF-pump enhanced emissions at 6300 and 5577 Å: a comparison between observations and theory [PDF]
Annales Geophysicae, 2008 We present bi-static observations of radio-wave induced optical emissions at 6300 and 5577 Å from a night-time radio-induced optical emission ionospheric pumping experiment at the HIPAS (Fairbanks) facility in Alaska.
B. Gustavsson +8 more
doaj +1 more source
Sulfide‐Based Electrolytes for All‐Solid‐State Sodium Batteries
Advanced Energy Materials, EarlyView.This review covers the structural features and synthesis strategies of sulfide‐based solid electrolytes, as well as critical challenges related to conductivity, interfacial and moisture stability, and scaling‐up for practical application in Sodium‐based All Solid‐State Batteries.
Han Yang +6 more
wiley +1 more source
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 +3 more
wiley +1 more source
Caltech and aeronautics: a presentation by the California Institute of Technology [PDF]
, 1958 The outstanding accomplishment of Caltech in the field of aeronautics is not that it has taught, but that it has always had something new to teach. When most aircraft were glued together from bamboo, balsawood, and canvas, Caltech was teaching the next ...
California, Institute of Technology
core
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 +3 more
wiley +1 more source