Results 91 to 100 of about 54,143 (228)

Condition Monitoring of Gearbox based on Statistical Linguistic Analysis of Time Series

open access: yesJixie chuandong, 2015
The vibration data from defective gearboxes generally exhibit non- stationary and nonlinear property. As a result,it seems hard to effectively monitor the running status of gearbox by using the conventional time domain statistical parameters method which
Lin Jinshan   +3 more
doaj  

Measurement and Analysis of Current Signals for Gearbox Fault Recognition of Wind Turbine

open access: yesMeasurement Science Review, 2013
This paper presents a novel solution method based on measurement and analysis of current signals for gearbox fault recognition of wind turbine. A gearbox with typical oil-leakage fault is purposely made.
Lin Deng-Fa, Chen Po-Hung, Williams Mike
doaj   +1 more source

Condition monitoring benefit for offshore wind turbines [PDF]

open access: yes, 2012
As more offshore wind parks are commissioned, the focus will inevitably shift from a planning, construction and warranty focus to an operation, maintenance and investment payback focus.
McMillan, David, Thöns, Sebastian
core  

Structural Analysis and Load Calculation of CRH380 High-speed Rail Gearbox based on Finite Element

open access: yesJixie chuandong, 2016
Aiming at the crack phenomenon in high- speed gearbox,the force of the suspension gearbox is calculated. The strength analysis of gearbox is carried out by using the finite element software ANSYS Workbench,and the weak position of gearbox is founded and ...
Liu Jie   +3 more
doaj  

Feasibility of nonlinear absorbers for transient vibration reduction [PDF]

open access: yes, 2010
Torsional vibrations are a cause of severe damage to flexible couplings and gearboxes of a dredger drive line. In this paper the feasibility of three different vibration absorbers is discussed when reducing transient vibrations originating from sudden ...
Aeyels, Dirk   +2 more
core   +1 more source

Analysis and Test of the Transmission Efficiency of Low Speed and Heavy Duty Gearbox

open access: yesJixie chuandong, 2017
Through the analysis of the influence factors on transmission efficiency of gearbox,a theoretical analysis model of gearbox transmission efficiency is set up from the power consumption,and the influences of gear meshing loss,bearing friction loss,oil ...
Li Youhua, Li Quancai, Liu Zhongming
doaj  

Oil cooling system for a gas turbine engine [PDF]

open access: yes, 1977
A gas turbine engine fuel delivery and control system is provided with means to recirculate all fuel in excess fuel control requirements back to the aircraft fuel tank.
Coffinberry, G. A., Kast, H. B.
core   +2 more sources

Floating Point Representations in Quantum Circuit Synthesis

open access: yes, 2013
We provide a non-deterministic quantum protocol that approximates the single qubit rotations R_x(2a^2 b^2)$ using R_x(2a) and R_x(2b) and a constant number of Clifford and T operations.
Kliuchnikov, Vadym, Wiebe, Nathan
core   +1 more source

Space shuttle orbiter auxiliary power unit development challenges [PDF]

open access: yes, 1985
When the flying spacecraft was approved for development, a power unit for the hydraulic system had to be developed. Unlike other systems on the orbiter, there was no precedent in earlier spacecraft for a hydraulic system nor for the power unit to drive ...
Lance, R., Weary, D.
core   +1 more source

Evolution from a hinge actuator mechanism to an antenna deployment mechanism for use on the European large communications satellite (L-SAT/OLYMPUS) [PDF]

open access: yes, 1984
The evolution of an Antenna Deployment Mechanism (ADM) from a Hinge Actuator Mechanism (HAM) is described as it pertains to the deployment of large satellite antennas.
Death, M. D.
core   +1 more source

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