| 摘要 |
The invention relates to a turbofan engine with mixed separate flows, which due to its configuration achieves an increase of the traction force and a decrease of the fuel consumption. According to the invention, the engine comprises a primary flow admission device (1) which has a position, direction and geometry different from a secondary flow admission device (2) so that an air flow rate (M) from the primary flow represents the air flow rate admitted by a low pressure compressor (3), admission which takes place at the outside of the engine along a radial direction by means of some profiled pillars (7) and it is directed into a collecting admission chamber (8), and an air flow rate (M) from the secondary flow represents the air flow rate admitted by a fan (4), solution which separates the admissions of primary flow from the secondary flow, and the burnt gases resulting from the combustion of the air-fuel mixture in a combustion chamber (12) are expanded in a high pressure turbine (11) and a low pressure turbine (6) and are directed by means of some profiled pillars (13) in the secondary air flow of the engine so that a gas flow rate (M) of the engine is mixed with the flow rate (M) of the fan (4) forming a mixture flow rate (M) which allows the mixture to expand in a reaction nozzle (14), leading to the increase of the speed of the mixture flow rate (M), and thus to the increase of the engine traction force and the decrease of the specific fuel consumption. |
