Turbofan arrangement
First Claim
1. A bypass turbofan engine comprises a first propulsion system and a second propulsion system, the first propulsion system comprises a first fan rotor, a core engine, a first low pressure turbine and a first fan shaft drivingly connecting the first turbine and the first fan rotor, the second propulsion system comprises a second fan rotor drivingly connected to a second low pressure turbine via a second fan shaft;
- in use a fluid drivingly flows through the first turbine then the second turbine;
wherein the first and second shafts are not coaxial with one another; and
wherein the engine comprises a heat exchanger positioned between the first low pressure turbine and the second low pressure turbine.
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Abstract
A bypass turbofan engine comprises a first propulsion system and a second propulsion system. The first propulsion system comprises a first fan rotor, a core engine, a first low pressure turbine and a first fan shaft drivingly connecting the first turbine and the first fan rotor. The second propulsion system comprises a second fan shaft drivingly connecting to a second fan rotor and the first propulsion system and arranged so that the first and second shafts are not coaxial with one another.
44 Citations
30 Claims
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1. A bypass turbofan engine comprises a first propulsion system and a second propulsion system, the first propulsion system comprises a first fan rotor, a core engine, a first low pressure turbine and a first fan shaft drivingly connecting the first turbine and the first fan rotor, the second propulsion system comprises a second fan rotor drivingly connected to a second low pressure turbine via a second fan shaft;
- in use a fluid drivingly flows through the first turbine then the second turbine;
wherein the first and second shafts are not coaxial with one another; and
wherein the engine comprises a heat exchanger positioned between the first low pressure turbine and the second low pressure turbine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
- in use a fluid drivingly flows through the first turbine then the second turbine;
Specification