Results 21 to 30 of about 192,046 (260)

Preliminary noise assessment of aircraft with distributed electric propulsion [PDF]

, 2018
Electric and hybrid-electric propulsion technologies in aviation are becoming more attractive for aviation stakeholders not only due to the resulting reduction or elimination of the dependency on oil, whose availability and price are uncertain, but ...
Eurocontrol Experimental Centre, European Aviation Safety Agency EASA, European Commission (EC), European Environment Agency (EEA)- European Aviation Safety Agency (EASA) - Eurocontrol, Felder J. L., Gregorio F. D., Hepperle M., Huff D. L., ICAO, International Standards, James G., Kroo I., Mehta V. K.   +12 more
core   +3 more sources

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

E3S 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

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

Machines
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, Vasyl Varvolik, Yuli Bao, Ahmed Aboelhassan, Michele Degano, Giampaolo Buticchi, He Zhang   +6 more
doaj   +1 more source

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

Energies, 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, Rok Kamnik, Maršenka Marksel, Stanislav Božičnik   +3 more
doaj   +1 more source

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

Energies
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, Hongliang Li, Jianyun Chai, Yuanli Kang   +3 more
doaj   +1 more source

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

Energies, 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, Weiwei Tan, Guangsi Chen, Delin Kong   +3 more
doaj   +1 more source

Toward more electric powertrains in aircraft: Technical challenges and advancements

CES Transactions on Electrical Machines and Systems, 2021
The main purpose of this article is to provide an instructive review of the technological challenges hindering the road toward more electric powertrains in aircraft.
Joseph Benzaquen, JiangBiao He, Behrooz Mirafzal   +2 more
doaj   +1 more source

Hybrid Electric Aircraft Propulsion Case Study for Skydiving Mission

Aerospace, 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, Michael Galea, Warren Williams, Tibor Glesk   +3 more
doaj   +1 more source

Programs at Wright-patterson Air Force Base [PDF]

, 1991
The Lubrication Branch has two active programs that are developing gas turbine engine mainshaft air/oil seals. Both of these programs, one of which is with General Electric Aircraft Engines and the other with Pratt & Whitney Aircraft, are addressing ...
Dayton, Ron
core   +1 more source

Developing a modelling environment of spacecraft solar array in low Earth orbit using real-time telemetry data

Franklin Open
Spacecraft solar arrays convert sunlight into electrical energy to fulfil the energy requirements of various missions. This work proposes a comprehensive environment for accurate power operation predictions.
Ahmed Mokhtar, Mohamed Ibrahim, Mohamed E. Hanafy, Fawzy H. Amer ElTohamy, Yehia Z. Elhalwagy   +4 more
doaj   +1 more source