Results 21 to 30 of about 131,875 (310)

Determining Actuator Requirements for Cyclic Varying Pitch Propeller for Ships

open access: yesEnergies, 2021
In marine applications, a cyclic varying pitch (CVP) propeller is a propeller in which the propeller blade can be cyclic-pitched. This cyclic pitching of the propeller blades is used to adapt to the local flow conditions in the non-uniform wake field ...
Uffe Sjølund Freiberg   +3 more
doaj   +1 more source

Investigation of the Effect of Rope Cutter on Water Flow behind Ship Propellers Based on CFD Analysis

open access: yesMachines, 2022
Small vessels operating in coastal waters are susceptible to propeller failure because of the entanglement of marine debris. Secondary accidents such as the injury of divers may also occur when removing entangling material.
Antony John Nyongesa   +8 more
doaj   +1 more source

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

The Screw Propeller [PDF]

open access: yesProceedings of the Institution of Automobile Engineers, 1915
n ...
openaire   +2 more sources

Formation of a Propeller Structure by a Moonlet in a Dense Planetary Ring

open access: yes, 2011
The Cassini spacecraft discovered a propeller-shaped structure in Saturn's A ring. This propeller structure is thought to be formed by gravitational scattering of ring particles by an unseen embedded moonlet.
Daisaka   +7 more
core   +1 more source

Quadrocopter propeller specifications

open access: yesАвіаційно-космічна техніка та технологія, 2023
The subject of the study is the characteristics of the quadrocopter propeller. The object of the study is a two-blade propeller of a quadrocopter. The aim of this study was to evaluate the efficiency, acoustic characteristics of the propeller of a ...
Kateryna Balalaieva   +3 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

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

Introduction to “Propeller Flaps”

open access: yesSeminars in Plastic Surgery, 2020
AbstractThe editors of this issue of Seminars in Plastic Surgery dedicated to propeller flaps met in 2009 at the “1st Tokyo Meeting on Perforator and Propeller Flaps.” On that occasion, as part of the advisory panel of the meeting, they contributed to the definition and classification of these flaps.
Pignatti, M, Hallock, GG
openaire   +4 more sources

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