Results 11 to 20 of about 264,581 (310)

Experimental and Numerical Study on Stress Distribution Characteristics of Traveling Wave Resonance of High-Speed Bevel Gear in Aero-Engine

open access: yesApplied Sciences, 2023
Gear failure caused by traveling wave resonance (TWR) generally occurs quite suddenly and causes catastrophic results in aero-engines. In this study, the TWR characteristics and stress distribution characteristics of a high-speed bevel gear in an aero ...
Xiaochi Luan   +4 more
doaj   +1 more source

Optimal Number of Turns Design of the IPT Coils for Laptop Wireless Charging

open access: yesIEEE Access, 2021
The coil design of the inductive power transfer (IPT) for a transmitter (Tx) and receiver (Rx) is crucial to determine the performance of the IPT. Considering core loss and copper loss of the Tx and Rx coils, which are major loss terms of the whole IPT ...
Eun S. Lee   +3 more
doaj   +1 more source

Structural Uncertainty Analysis of High-Temperature Strain Gauge Based on Monte Carlo Stochastic Finite Element Method

open access: yesSensors, 2023
The high-temperature strain gauge is a sensor for strain measurement in high-temperature environments. The measurement results often have a certain divergence, so the uncertainty of the high-temperature strain gauge system is analyzed theoretically ...
Yazhi Zhao   +4 more
doaj   +1 more source

Rapid submarine ice melting in the grounding zones of ice shelves in West Antarctica

open access: yesNature Communications, 2016
Ice-shelf bottom melting is thought to cause mass loss in West Antarctica. Here, the authors analyse radar observations of the Dotson and Crosson ice shelves to directly quantify grounding zone unbalanced melting of up to 70 m per year, and illustrate ...
Ala Khazendar   +8 more
doaj   +1 more source

The Effect of Hydrogen Addition on the Combustion Characteristics of RP-3 Kerosene/Air Premixed Flames

open access: yesEnergies, 2017
Experimental studies have been performed to investigate the effects of hydrogen addition on the combustion characteristics of Chinese No.3 jet fuel (RP-3 kerosene/air premixed flames.
Wen Zeng   +4 more
doaj   +1 more source

Analysis of Key Technologies for New Green Marine Propulsion Systems [PDF]

open access: yesE3S Web of Conferences, 2020
The new green Marine propulsion system, as a new generation of marine propulsion, has advantages of strong mobility, low fuel consumption, low noise, safety and comfort.
Duan Zheng   +3 more
doaj   +1 more source

Vibration analysis of ship propulsion shafting bearings [PDF]

open access: yesE3S Web of Conferences, 2021
The ship power propulsion system is the "heart" of the ship, and the ship propulsion shafting is the core unit of the ship power propulsion system, and it is an indispensable part of the ship's propulsion torque and thrust transmission.
Shuo Chen, Heng Zhang
doaj   +1 more source

Overemphasized role of preceding strong El Niño in generating multi-year La Niña events

open access: yesNature Communications, 2023
Previous studies have emphasized the significance of a strong El Niño preceding La Niña (LN) in the formation of multi-year LN events due to the slow recharge-discharge ocean heat content process.
Ji-Won Kim, Jin-Yi Yu, Baijun Tian
doaj   +1 more source

The investigation of vibration characteristics on the bolted disk–drum joints structure

open access: yesAdvances in Mechanical Engineering, 2019
In a bolted disk–drum joints structure, assembly parameters, such as the number and pretightening force of the tightening bolts, will affect the vibration characteristics of the structure. In this article, the influences are discussed.
Fei Wang, Jiang Li, Yu-qi Li, Zhong Luo
doaj   +1 more source

Modelling and Preliminary Prediction of Thermal Balance Test for COMS

open access: yesJournal of Astronomy and Space Sciences, 2009
COMS (Communication, Ocean and Meteorological Satellite) is a geostationary satellite and developed by KARI for communication, ocean and meteorological observations.
Hyoung Yoll Jun   +2 more
doaj   +1 more source

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