GAS TURBINE ENGINE WITH A COUNTER ROTATING FAN
First Claim
1. A gas turbine engine, comprising:
- a fan includinga first plurality of fan blades supported on a first fan support that is rotatable about a fan axis, anda second plurality of fan blades supported on a second fan support that is rotatable about the fan axis independent of the first plurality of fan blades;
a compressor section;
a combustor in fluid communication with the compressor section;
a turbine section in fluid communication with the combustor; and
a geared architecture including at least one gear configured to be driven by the turbine section for rotating about a gear axis that is transverse to the fan axis, the at least one gear being configured for driving the first fan support for rotating the first plurality of fan blades in a first direction, the at least one gear being configured for driving the second fan support for rotating the second plurality of fan blades in a second, opposite direction.
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Accused Products
Abstract
An exemplary gas turbine engine includes a fan, a compressor section, a combustor in fluid communication with the compressor section and a turbine section in fluid communication with the combustor. The fan includes a first plurality of fan blades supported on a first fan support and a second plurality of fan blades supported on a second fan support. The first and second fan supports are rotatable about a fan axis independently of each other. A geared architecture includes at least one gear driven by the turbine section for rotating about a gear axis that is transverse to the fan axis. The gear drives the fan supports for rotating the respective pluralities of fan blades in opposite directions.
23 Citations
21 Claims
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1. A gas turbine engine, comprising:
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a fan including a first plurality of fan blades supported on a first fan support that is rotatable about a fan axis, and a second plurality of fan blades supported on a second fan support that is rotatable about the fan axis independent of the first plurality of fan blades; a compressor section; a combustor in fluid communication with the compressor section; a turbine section in fluid communication with the combustor; and a geared architecture including at least one gear configured to be driven by the turbine section for rotating about a gear axis that is transverse to the fan axis, the at least one gear being configured for driving the first fan support for rotating the first plurality of fan blades in a first direction, the at least one gear being configured for driving the second fan support for rotating the second plurality of fan blades in a second, opposite direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A gas turbine engine, comprising:
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a fan that is rotatable about a fan axis; a compressor section including a first compressor that experiences a first pressure, a second compressor that experiences a second pressure that is higher than the first pressure, the first compressor being spaced from the second compressor along a direction parallel to the fan axis; a combustor in fluid communication with the compressor section; a turbine section in fluid communication with the combustor; and a geared architecture for rotating the fan about the fan axis, the geared architecture including at least one gear configured to be driven by the turbine section for rotating about a gear axis that is transverse to the fan axis. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification