Results 11 to 20 of about 755,343 (256)

A Preliminary Design Method of High-Power Electro-Hydrostatic Actuators Considering Design Robustness

open access: yesActuators, 2022
Electro-hydrostatic actuators (EHAs) are expanding their application fields due to their combined advantages of electric and hydraulic actuation.
Tuanhui Guo   +3 more
doaj   +1 more source

Preliminary Propulsion and Power System Design of a Tandem-Wing Long-Range eVTOL Aircraft

open access: yesApplied Sciences, 2021
Novel eVTOL aircraft configurations are picking up momentum in the emerging market of urban air mobility (UAM). These configurations feature electrical power systems and distributed propulsion architectures, both uncommon in current aircraft.
Javier Alba-Maestre   +3 more
doaj   +1 more source

Design and development of combustion chambers for gas turbine engines based on calculations of various levels of complexity [PDF]

open access: yesВестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2021
The article proposes a method for designing combustion chambers for gas turbine engines based on a combination of the use of calculations in a one-dimensional and three-dimensional formulation of the problem.
Y. B. Aleksandrov   +2 more
doaj   +1 more source

Preliminary Design and Blade Optimization of a Two-Stage Radial Outflow Turbine for a CO2 Power Cycle

open access: yesEnergies, 2022
Recently, the CO2 power cycle has attracted attention because of tightening environmental regulations. The turbine is a factor that greatly affects the efficiency of the cycle.
Jun-Seong Kim, You-Taek Kim, Do-Yeop Kim
doaj   +1 more source

Preliminary Design and Analysis of Supersonic Business Jet Engines

open access: yesAerospace, 2022
Currently projected supersonic business jets target selected supersonic flight missions with Mach numbers of about 1.4 and a larger number of long-range subsonic flight missions.
Timo Schlette, Stephan Staudacher
doaj   +1 more source

Modified Deflection Theory for Preliminary Design of Self-Anchored Suspension Bridges

open access: yesThe Baltic Journal of Road and Bridge Engineering, 2023
A modified deflection theory is developed for preliminary design of self-anchored suspension bridges. The proposed theory modifies the questionable approach of the existing theory considering the initial fabrication camber and overcomes the limitation ...
Minmao Liao, Huaili Peng
doaj   +1 more source

New shipyard layout design for the preliminary phase & case study for the green field project

open access: yesInternational Journal of Naval Architecture and Ocean Engineering, 2013
For several decades, Asian nations such as Korea, Japan and China have been leading the shipbuilding industry since the decline in Europe and America. However, several developing countries such as India, Brazil, etc.
Young Joo Song, Jong Hun Woo
doaj   +1 more source

Proposition of Design Capacity of Borehole Heat Exchangers for Use in the Schematic-Design Stage

open access: yesEnergies, 2021
This study proposes a simple ground heat exchanger design capacity that is applicable in the schematic-design stage for several configurations used for borehole heat exchangers (BHEs).
Seung-Min Lee   +3 more
doaj   +1 more source

Mission Oriented Multi-Prop UAV Analysis Using Statistical Design Trends

open access: yesAerospace, 2021
This paper presents a methodology for the sizing and preliminary analysis of Multi-Prop UAVs. The methodology is founded on design trends that emerge from a vast and unique database that has been collected for such vehicles.
Omri Rand, Vladimir Khromov
doaj   +1 more source

ADCS Preliminary Design For GNB

open access: yesCoRR, 2021
This work deals with an ADCS model for a satellite orbiting around Earth. The object is to achieve a preliminary design and perform some analysis on it. To do so, a GNB was selected and main properties are exploited. Previous works of [9], [13], [14], [15] and [17] were analyzed and a synthesis was obtained; then a suitable control system was designed ...
Alessio Bocci   +1 more
openaire   +2 more sources

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