Results 21 to 30 of about 22,979 (144)

HORIZONTAL AXIS MARINE CURRENT TURBINE DESIGN FOR WIND-ELECTRIC HYBRID SAILING BOAT

open access: yesBrodogradnja, 2017
In recent decades, the number of theoretical studies and applications on electric power production from renewable sources such as wind, solar, sea and tidal flows, has been increasing rapidly.
Serkan Ekinci, Mustafa Alvar
doaj   +1 more source

Simulation of the Battery Pack Exploitation Based on Real Measurement Data of Applied Chemical Cells

open access: yesMATEC Web of Conferences, 2016
Authors of following article present the method of battery work simulation based on real measurement data of applied chemical cells and workload data. Description of method as its assumptions are presented.
Koniak Marcin   +3 more
doaj   +1 more source

EFFECT OF THE CLEARANCE BETWEEN ROWS OF COAXIAL PROPFAN ON THRUST

open access: yesАвіаційно-космічна техніка та технологія, 2020
The thrust of a turboprop engine depends on many factors, one of which is hydraulic loss when flowing around the propeller blades. When using coaxial propellers, this factor plays an even greater role, since in this case the losses associated with the ...
Вячеслав Юрьевич Усенко   +2 more
doaj   +1 more source

Computational Study of Propeller–Wing Aerodynamic Interaction

open access: yesAerospace, 2018
Kestrel simulation tools are used to investigate the mutual interference between the propeller and wing of C130J aircraft. Only the wing, nacelles, and propeller geometries are considered.
Pooneh Aref   +4 more
doaj   +1 more source

An analysis of low-frequency propeller vibration and sound radiation characteristics: The Jellyfish effect

open access: yesZhongguo Jianchuan Yanjiu, 2020
Objectives Arousing the "Jellyfish mode" of a propeller can lead to strong low-frequency, narrow band sound radiation. On this basis, the second sound radiation mechanism of the "Jellyfish mode" has been investigated.
WU Chongjian   +4 more
doaj   +1 more source

Qualification of Propeller by Experimental and Analytical Methods [PDF]

open access: yesInternational Journal of Advanced Design and Manufacturing Technology, 2019
The paper focuses on static and dynamic analysis of propeller blade made of Aluminium-24345 material. The solid model of propeller blade and propeller are developed in CATIA V5 R20.
K. Siva Prasad, S. Murthy Bellala
doaj  

An Investigation of the Aerodynamic Performance for a Fuel Saving Double Channel Wing Configuration

open access: yesEnergies, 2019
This paper presents a fuel saving double channel wing (FADCW) configuration for a propeller driven aircraft to reduce fuel consumption. In pursuit of this objective, FADCW configuration combines the tractor propeller layout and over-the-wing propeller ...
Hongbo Wang, Wenbiao Gan, Daochun Li
doaj   +1 more source

Unsteady Aerodynamic Investigation of the Propeller-Wing Interaction for a Rocket Launched Unmanned Air Vehicle

open access: yesAdvances in Mechanical Engineering, 2013
The aerodynamic characteristics of propeller-wing interaction for the rocket launched UAV have been investigated numerically by means of sliding mesh technology.
G. Q. Zhang   +3 more
doaj   +1 more source

The analysis of a propeller's low-frequency vibration and sound radiation characteristics: Jellyfish mode

open access: yesZhongguo Jianchuan Yanjiu, 2020
[Objectives] We found a new component of propeller noises which is induced by the excitation of the low-frequency elastic mode of the propeller. In particular,the model where all the blades of a propeller vibrate in the same phase is stimulated will ...
WU Chongjian   +4 more
doaj   +1 more source

Numerical investigation of the unsteady flow of a hybrid CRP pod propulsion system at behind-hull condition

open access: yesInternational Journal of Naval Architecture and Ocean Engineering, 2020
Flows induced by hybrid CRP pod propulsion systems (CRP-POD) are fundamentally characterized by unsteadiness. This work presents a numerical study on the unsteady flow of a CRP-POD at behind-hull condition based on CFD (Computational Fluid Dynamics ...
Yuxin Zhang, Xuankai Cheng, Liang Feng
doaj   +1 more source

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