Societe National D'etude Et De Auction De Moteurs D'aviation 'snecma'

Xavier Jean-Michel Andre Guyonnet

Pascal C Wurniesky

A bypass engine including a fan which has its blades disposed in both the imary gas flow path and the secondary gas flow path of the engine is provided with an annular intermediate gas flow path in the space between the primary and secondary flow paths, and gas take-off means is connected to a compressor of the engine and arranged to direct a flow of gas longitudinally along the intermediate flow path to prevent leakage of hot gas to the secondary flow path via the gaps existing between the platforms of the fan blades and the adjacent annular members of the primary and secondary flow paths.

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77310-Saint Fargeau Ponthierry, France

Xavier Jean-Michel Andre Guyonnet