Turbofan comprising a power supply device to drive the compressor
AssigneeSafran Aircraft Engines
InventorsHenri Yesilcimen, Caroline Marie Frantz, Nicolas Jérôme Jean Tantot, Nathalie Nowakowski, Gilles Alain Marie Charier, Kévin Morgane Lemarchand, Jonathan Evert Vlastuin
Life of this patent
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Abstract
A turbofan includes a fan, a casing positioned downstream of the fan and separating a primary flowpath from a secondary flowpath, a compressor, a combustion chamber and a turbine being arranged in the primary flowpath, the turbofan having a differential transmission coupled to the turbine, and a power supply device configured to provide additional power to the one provided by the turbine to drive the compressor.
Claims20
A turbofan, comprising a fan, a casing positioned downstream of the fan and separating a primary flowpath from a secondary flowpath, a compressor, a combustion chamber and a turbine being arranged in the primary flowpath, the turbofan comprising a differential transmission coupled to the turbine, and a power supply device configured to provide additional power to that provided by the turbine to drive the compressor, wherein the differential transmission comprises a first reduction gear configured to modify the rotation speed transmission ratio between the turbine and the fan and a second reduction gear configured to modify the rotation speed transmission ratio between the turbine and the compressor, the second reduction gear being coupled to an output of the first reduction gear different from an output coupled to fan.
Dependencies are inferred from the claim text.