Results 21 to 30 of about 123,370 (361)

Misunderstanding Flight Part 2: Epistemology and the Philosophy of Science

open access: yesEducation Sciences, 2023
Flight has become a common everyday occurrence. We have engineered ever more efficient and reliable aircraft, facilitating safe transportation around the world. However, from the education literature on the topic of lift, online discussions, and YouTube,
Graham Wild
doaj   +1 more source

Experimental Study of Visual Corona under Aeronautic Pressure Conditions Using Low-Cost Imaging Sensors

open access: yesSensors, 2020
Visual corona tests have been broadly applied for identifying the critical corona points of diverse high-voltage devices, although other approaches based on partial discharge or radio interference voltage measurements are also widely applied to detect ...
Jordi-Roger Riba   +2 more
doaj   +1 more source

Misunderstanding Flight Part 1: A Century of Flight and Lift Education Literature

open access: yesEducation Sciences, 2023
The science education literature is littered with “new”, “correct”, “novel”, “explanations”, “theories”, and “approaches” to aerodynamic lift. One might infer from reading the growing number of these articles that there is a fundamental gap in classical ...
Graham Wild
doaj   +1 more source

Ionic Liquid-Based Electrolyte with Multiple Hydrogen Bonding Network Enabling High-Voltage Stable Proton Batteries Across Wide Temperature Range. [PDF]

open access: yesAdv Sci (Weinh)
An ionic liquid electrolyte with multilane hydrogen‐bond interactions is designed for stable, high‐voltage proton storage. Such enhanced hydrogen bond imparts rapid and stable electrochemical proton storage with a high operating voltage of 2 V. A symmetric full proton battery using the electrolyte achieves a maximum energy density of 87.5 Wh kg−1 and a
Dong X   +7 more
europepmc   +2 more sources

Publishing in “Aircraft Design” with a Continuous Open Access Special Issue

open access: yesAerospace, 2020
The article looks at publishing options in the field of aircraft design to find that no dedicated journal on aircraft design exists. For this reason, a Continuous Special Issue Aircraft Design of the well established journal “Aerospace” at ...
Dieter Scholz
doaj   +1 more source

Spectrum of Corona Discharges and Electric Arcs in Air under Aeronautical Pressure Conditions

open access: yesAerospace, 2022
Due to the increase in electrical power demand, future more electric and all-electric aircraft designs will operate at higher voltage levels compared to current aircraft.
Jordi-Roger Riba
doaj   +1 more source

Fracture Toughness Analysis of Epoxy-Recycled Rubber-Based Composite Reinforced with Graphene Nanoplatelets for Structural Applications in Automotive and Aeronautics

open access: yesPolymers, 2020
This study proposes a new design of lightweight and cost-efficient composite materials for the aeronautic industry utilizing recycled fresh scrap rubber, epoxy resin, and graphene nanoplatelets (GnPs).

semanticscholar   +1 more source

Design of a Troubleshooting Digital Test Bench for the Beechcraft King C-90, 200, B200, 300 and 350 Aircraft GCU

open access: yesIngeniería, 2020
Context: The Colombian Army’s First Aircraft Maintenance Battalion must periodically test the performance of Generator Control Unit (GCU) on its Beechcraft King Air aircraft, which compels the operator to assume uncomfortable and non-ergonomic physical ...
Carlos Arturo Cabrera Arias   +3 more
doaj   +1 more source

Des approches prescriptives aux systèmes de gestion du risque fatigue

open access: yesPerspectives Interdisciplinaires sur le Travail et la Santé, 2015
The impact of hours of work on employees’ health and safety is a critical issue given the increasing use of abnormal hours of work in a number of industries, services or transports.
Philippe Cabon
doaj   +1 more source

Soutenir l’aérostation pour mieux la tuer. La collection Nadar conservée à la Bibliothèque historique de la Ville de Paris et au musée Carnavalet

open access: yesIn Situ, 2018
Nadar is a well-known figure among the prominent French photographers of the nineteenth century, but his role as a supporter of aerial travel is rather less well-known.
Juliette Jestaz
doaj   +1 more source

Home - About - Disclaimer - Privacy