Axial turbomachine compressor outer casing with seal
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United States of America Patent
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Sep 25, 2018
Grant Date -
Apr 14, 2016
app pub date -
Sep 14, 2015
filing date -
Oct 10, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
The invention relates to an axial turbomachine compressor outer casing. The casing comprises a sealing device collaborating with a row of rotor blades. The casing comprises a wall with an annular groove in which the sealing device is housed. The sealing device comprises a segmented outer shroud and a plurality of piezoelectric actuators moving the shroud radially in the groove so as to open or close the functional clearance. The invention also proposes a method for controlling a sealing device for a turbojet engine, the method comprising a step of measuring the altitude and a step of adjusting a clearance according to the altitude.
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