Results 31 to 40 of about 6,789 (263)

A Comparative Study on the Design and Challenges for All-Electric and Hybrid-Electric Aircraft [PDF]

open access: yesE3S Web of Conferences
Greenhouse gas (GHG) consumption from the combustion of jet fuel is already a key contributor to climate change. The amount of pollution is rising continuously as the demand for air travel rises consistently.
Gong Keming
doaj   +1 more source

Modelling Green VTOL Concept Designs for Reliability and Efficiency

open access: yesDesigns, 2021
All-electric and hybrid-electric aircraft are a future transport goal and a possible ‘green’ solution to increasing climate-related pressures for aviation.
Julian David Booker   +2 more
doaj   +1 more source

Assessment of geometric correction of remote sensing satellite images using RPC versus GCP [PDF]

open access: yesJournal of Engineering Science and Military Technologies, 2018
Geometric distortions are common problems when dealing with remote sensing satellite images. Therefore, geometric correction is a necessary process for preparing remote sensing satellite images for many applications.
Mohamed Soliman   +4 more
doaj   +1 more source

Automated Maximum Torque per Ampere Identification for Synchronous Reluctance Machines with Limited Flux Linkage Information

open access: yesMachines
The synchronous reluctance machine is well-known for its highly nonlinear magnetic saturation and cross-saturation characteristics. For high performance and high-efficiency control, the flux-linkage maps and maximum torque per ampere table are of ...
Shuo Wang   +6 more
doaj   +1 more source

Research on Large Hybrid Electric Aircraft Based on Battery and Turbine-Electric

open access: yesEnergies
Hybrid electric aircraft use traditional engine and electric propulsion combinations to optimize aircraft architecture, improve propulsion efficiency, and reduce fuel consumption. As a new technology, the fuel and energy consumption calculation of hybrid
Yannian Hui   +3 more
doaj   +1 more source

Market and Technological Perspectives for the New Generation of Regional Passenger Aircraft

open access: yesEnergies, 2019
This article describes the extent to which hybrid aircraft and all-electric aircraft can present a solution for reducing HC, CO, and NO x emissions and noise in the vicinity of airports, in the category of regional passenger aircraft. The goal of
Anita Prapotnik Brdnik   +3 more
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

open access: yesAdvanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara   +8 more
wiley   +1 more source

Hybrid Electric Aircraft Propulsion Case Study for Skydiving Mission

open access: yesAerospace, 2017
This paper describes a case study for applying innovative architectures related to electrified propulsion for aircraft. Electric and hybrid electric propulsion for aircraft has gained widespread and significant attention over the past decade.
Richard Glassock   +3 more
doaj   +1 more source

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

open access: yesAdvanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar   +7 more
wiley   +1 more source

A Novel Robust Model Predictive Controller for Aerospace Three-Phase PWM Rectifiers

open access: yesEnergies, 2018
This paper presents a novel Model Predictive Direct Power Control (MPDPC) approach for the pulse width modulation (PWM) rectifiers in the Aircraft Alternating Current Variable Frequency (ACVF) power system.
Tao Lei   +3 more
doaj   +1 more source

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