Results 91 to 100 of about 1,223 (241)

Analysis System of Marine Planetary Gear Trains

open access: yes, 2011
Planetary gear train (PGT) with herringbone gears is one of typical transmission styles used in marine power transmission. How to effectively design a PGT with lighter structures and lower vibration and noise is a fatal task for heavily loaded marine ...
Ying Sheng Li   +3 more
core   +1 more source

Global distribution of aquatic animal telemetry effort reveals geographic biases and opportunities for more inclusive tracking studies

open access: yesConservation Science and Practice, EarlyView.
Despite broad global distribution of aquatic telemetry studies, important biogeographic regions remain poorly investigated. The most important variables correlated with the distribution of telemetry studies were political stability, conservation funding, number of scientific documents, and English as a first language.
S. T. Kessel   +11 more
wiley   +1 more source

Analysis of the Dynamic Load Sharing Characteristic of Two-stage Planetary Transmission

open access: yesJixie chuandong, 2016
To study the dynamic load sharing characteristics of two- stage planetary gear train,a translation- torsion coupling dynamics model is established by taking the nonlinear factors like time- varying mesh stiffness,position error,eccentric error,gear ...
Li Siqian, Wu Shijing, Wang Xiaosun
doaj  

An Experimental study on identification of planetary gear train system by Using Genetic Algorithms

open access: yes, 2001
In this thesis, a simple dynamic model of the planetary gear train system is developed. Because of the dynamic equations deriving from designing a planetary gear train system are complex and nonlinear, and the controller design is difficult.
Liu, Kun-Nan
core  

Aspects of geometric calculation of the planetary gear train with intermediate rollers. Part 1

open access: yes, 2016
The paper presents the geometric calculation of the planetary gear train with intermediate rollers, where the number of intermediate rollers is greater or less than that of the teeth in the annular gear by one, the profile surface of the annular gear ...
Lazurkevich, A. V.   +2 more
core   +1 more source

How a Traveling Exhibition on Wasps Altered Public Perceptions

open access: yesCurator: The Museum Journal, EarlyView.
ABSTRACT Media portrays a caricature of the “evil” wasp (a flying insect), perpetuating fears developed at a young age or from individual negative experiences. Because wasps are critically important to nature and our agriculture, it is important to provide some form of education to lessen this fear.
Brenna L. Decker   +3 more
wiley   +1 more source

Optimization design of parameters of the stacked compound planetary gear train for helicopter main gearboxes

open access: yesJixie chuandong
ObjectiveBy using the stacked compound planetary gear train, a more compact gear reducer can be obtained, and the radial size and mass of the reducer can be reduced.MethodsA mathematical model for parameter optimization design of a stacked compound ...
BAI Lianghe, ZHU Rupeng
doaj  

Beveloid gears in planetary gear trains for increased power density and reduced backlash

open access: yes, 2017
By using beveloid gears in planetary gear trains it is possible to achieve very equal load sharing between the planet gears also for gear trains with more than 3 planet gears, thus making it possible to increase torque density and reduce weight.
Stensson, Alexander Eng,   +3 more
core  

Understanding the Range and Impact of Visitor Experiences at Science Museums

open access: yesCurator: The Museum Journal, EarlyView.
ABSTRACT While the core mission of science museums is to provide engaging learning experiences that promote scientific literacy among the visiting public, attention has recently been focused on the wide range of visitor experiences that surround and support visitor learning.
Jan Packer
wiley   +1 more source

Analysis of the Influence of Meshing Error and Phase Angle on Load Sharing Characteristic of Compound Planetary Gear Train

open access: yesJixie chuandong, 2016
Taking the compound planetary gear train as research object,a nonlinear translation- torsion coupled dynamics model is established for compound planetary gear train considering the time- varying meshing stiffness,gear backlash and synthetic meshing ...
Zhou Lu   +4 more
doaj  

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