... vibration and acoustic emission signals are collected from a gearbox dynamics testbed, where both healthy and faulty gears with different fault conditions are tested. To deal with the nonstationary nature of the wind turbine operation, a harmonic wavelet based method is utilized to extract the time...

...Yasushi Matsunaga; Noriko Morioka; Seiei Masuda; Masahiro Kurosaki A unique double gear fuel pump system with operation mode switching capability for aircraft engines was developed to solve the heat management problem of current high efficiency turbofan engines and improve specific fuel consumption...

...R. Castilla; M. Gutes; P. J. Gamez-Montero; E. Codina This paper describes a numerical analysis of the dynamics of the shaft in the journal bearing of a gear pump. The modulus and direction of the load is a function of the relative position of the gears, causing a precession motion around...

... 2008 13 07 2009 gears mechanical contact valves As valve train designs are required to meet the ever higher demands of the market, individual component optimization in the context of overall valve train system optimization becomes crucial to producing the required system...

...R. Castilla; M. Gutes; P. J. Gamez-Montero; E. Codina The movement of the shaft of a driven gear in a gear pump is experimentally studied. Three different methods are considered, and the use of a laser micrometer measurement method is validated. In order to use the laser micrometer, some...

... 3.6238 Bearing chamber C 3.8 3.6993 14 04 2008 15 05 2008 10 02 2009 aerospace computing aerospace engines flow simulation gears heat exchangers lubricating oils lubrication machine bearings nozzles numerical analysis orifices (mechanical) pipes temperature...