Gas turbine engine with fan-tied inducer section and multiple low pressure turbine sections
First Claim
Patent Images
1. A gas turbine engine comprising:
- a first shaft defining an axis of rotation;
a second shaft rotatable about the axis of rotation and spaced radially outwardly relative to the first shaft;
a speed change mechanism driven by the second shaft;
a fan including a fan rotor driven by the speed change mechanism and the first shaft, wherein the fan and the first shaft rotate at a slower speed than the second shaft; and
at least one inducer stage positioned aft of the fan and coupled for rotation with the fan rotor.
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Abstract
A gas turbine engine includes a first shaft defining an axis of rotation and a second shaft rotatable about the axis of rotation and spaced radially outwardly relative to the first shaft. A speed change mechanism is driven by the second shaft. A fan includes a fan rotor driven by the speed change mechanism such that the fan and the first shaft rotate at a slower speed than the second shaft. At least one inducer stage is positioned aft of the fan and is coupled for rotation with the fan rotor.
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Citations
19 Claims
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1. A gas turbine engine comprising:
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a first shaft defining an axis of rotation; a second shaft rotatable about the axis of rotation and spaced radially outwardly relative to the first shaft; a speed change mechanism driven by the second shaft; a fan including a fan rotor driven by the speed change mechanism and the first shaft, wherein the fan and the first shaft rotate at a slower speed than the second shaft; and at least one inducer stage positioned aft of the fan and coupled for rotation with the fan rotor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A gas turbine engine comprising:
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a first shaft defining an axis of rotation; a second shaft rotatable about the axis of rotation and spaced radially outwardly relative to the first shaft; a speed change mechanism driven by the second shaft; a fan section including at least one fan blade coupled to a fan rotor wherein the fan rotor is driven by the speed change mechanism; a first compressor section driven by the first shaft; a second compressor section driven by the second shaft; and at least one inducer stage positioned aft of the fan blade and coupled for rotation with the fan rotor about the axis of rotation. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification