System for rotating a fan of a turbojet engine
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United States of America Patent
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Dec 8, 2020
Grant Date -
May 23, 2019
app pub date -
Feb 8, 2017
filing date -
Feb 8, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
The invention relates to a system for rotating a fan (2) of a turbojet engine (1) about a first rotation axis Ω, including a reduction gear (3) made up of a planetary gearset placed at the centre of the fan (2), which includes: a central sun gear (31); an outer planet gear (33) attached to the fan (2); at least one satellite gear (32) arranged between the central sun gear (31) and the outer planet gear (33) in order to transmit a rotary movement between the central sun gear (31) and the outer planet gear (33); characterised in that the outer planet gear (33) includes an inner portion (33a) which meshes with the satellite gear (32), as well as an outer portion (33b) to which blades (21) of the fan (2) are directly attached.
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