planetary gear

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Related to Planetary gears: epicyclic
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Noun1.planetary gear - an outer gear that revolves about a central sun gear of an epicyclic trainplanetary gear - an outer gear that revolves about a central sun gear of an epicyclic train
epicyclic gear train, epicyclic train - a system of epicyclic gears in which at least one wheel axis itself revolves about another fixed axis
cogwheel, gear, gear wheel, geared wheel - a toothed wheel that engages another toothed mechanism in order to change the speed or direction of transmitted motion
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References in periodicals archive ?
New, frequency-domain methods for simulating sideband noise in planetary gears help in evaluating rotating gear mesh forces in a planetary gear system, component rotation on the full system vibration response and manufacturing variability.
Dynamics equations of planetary gears are shown as follows where lumped mass methodology is utilized [15]:
In recent years, a few studies have included gyroscopic effect on free vibration of planetary gears. Lin and Parker [25] used eigenvalue derivatives to show the effect of carrier rotation on eigenvalue loci.
In addition, the DSS Series features a two-piece shaft that isolates the planetary gears from the pushing, pulling and bending forces, without increasing the load on the bearings.
Parker, who is recognized as an expert on the vibration of high-speed power transmissions such as geared and belt-pulley systems, recently received the 2015 Doak Prize from the Journal of Sound and Vibration for his research on instabilities in high-speed planetary gears inside airplane engines.
Partnered with the world's foremost gear manufacturers, Centa says it creates solutions that may integrate precision face gears, planetary gears and high precision robotic drives and speed reducers.
He told a fatal accident inquiry in Aberdeen that he became convinced the aircraft crashed because of a fatigue crack on one of the planetary gears.
Fix the inner ring of the first-stage planetary gear train, and take the number of planetary gears of the planetary gear train as 3; namely, 1N = 2N = 3.
That gives the oil time to run back from the planetary gears into the hub so you can get an accurate reading in the sight glass.

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