Results 71 to 80 of about 2,948 (233)

Influence of Key Parameter on Contact and Lubrication Performance of the Roller Enveloping Internal Engagement Worm Gear Transmission

open access: yesJixie chuandong, 2019
In order to analyze the influence of key parameters on the contact and lubrication performance of the inner meshing worm gear of the roller envelop, the mathematical model of the new worm drive is built.
Yuanhong Song   +3 more
doaj  

Research of the Special Processing Equipment Development and Trial Production of Roller Enveloping End Face Engagement Worm Pair

open access: yesJixie chuandong, 2020
According to the transmission principle and mathematical model of the roller envelope end face meshing worm drive, the conjugate relationship of the roller envelope end face meshing worm is analyzed, and the design scheme of the roller envelope end face ...
Kai Wang
doaj  

Assessment of worm gearing for helicopter transmissions [PDF]

open access: yes
A high-efficiency hydrostatic worm gear drive for helicopter transmissions is assessed. The example given is for a large cargo helicopter with three 4000-kW engines and transmission reduction ratio of 110. Also contained are: an efficiency calculation, a
Chaiko, Lev
core   +1 more source

Experimental Study on Condition Monitoring of Low Speed Bearings : Time Domain Analysis [PDF]

open access: yes, 2007
In condition monitoring of low speed rolling element bearings (REBs), traditional techniques involving vibration acceleration may not be able to detect a growing fault due to the low impact energy generated by the relative motion of the components.
Kim, E. Y.   +3 more
core  

Non-destructive technologies for fruit and vegetable size determination - a review [PDF]

open access: yes, 2009
Here, we review different methods for non-destructive horticultural produce size determination, focusing on electronic technologies capable of measuring fruit volume.
Affeldt   +75 more
core   +2 more sources

Numerical Approaches for the Analysis of Glass Facades Under Seismic Loads

open access: yesEarthquake Engineering and Resilience, EarlyView.
Glass facades have gained more popularity due to their highly impacting esthetic and sustainable applications. However, their constitutive glass components are rather vulnerable and need proper analysis strategies to design them in efficient structural terms, especially against extreme loads, such as earthquakes.
Mir Zafarullah, Chiara Bedon
wiley   +1 more source

The Cowl - v.4 - n.24 - Apr 28, 1939 [PDF]

open access: yes, 1939
The Cowl - student newspaper of Providence College. Volume 4, Number 24 - April 28, 1939.

core   +1 more source

Thermochronologic Constraints on the Extensional History of the Ibex Hills, Southeastern Black Mountains, Death Valley, California

open access: yesGeological Journal, EarlyView.
A. Modeled T‐t paths for samples in the northern Ibex Hills, showing steady cooling throughout much of the Cenozoic, until rapid Miocene cooling. B. Weighted mean paths for each sample in this study. Note that all show a rapid cooling event at or just after 10 Ma, which is interpreted to represent exhumation as a result of regional extenstion ...
Zachariah D. Fleming
wiley   +1 more source

Influence of Worm-wheel Rotational Deflection on Meshing Performance of the Cylindrical Roller Enveloping Internal Engagement Worm Gear

open access: yesJixie chuandong, 2018
The cylindrical roller enveloping end-face internal engagement worm gear with the worm-wheel rotational deflection is a novel transmission that can achieve multi-load and different corner angular outputs.
Song Yuanhong   +2 more
doaj  

Polycentrism and Flux in Spatialized Management: Evidence from Maine\u27s Lobster (Homarus americanus) Fishery [PDF]

open access: yes, 2010
Spatial approaches to fisheries management hold great promise but require continued conceptual and policy development. Polycentrism and flux emerge as useful concepts, drawing lessons from more customary, informal resourceuse patterns to produce more ...
Brewer, Jennifer F.
core   +1 more source

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