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Turbofan postpose type engine

A turbojet engine and rear-mounted technology, applied in the direction of machines/engines, jet propulsion devices, etc., can solve problems such as complex manufacturing and processing, high cost, and difficult design

Inactive Publication Date: 2010-11-10
季承
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing turbofan engine relies on the airflow provided by the front-stage fan and compressor to burn the fuel in the combustion chamber, so that the expanded high-temperature and high-pressure gas impulses the thrust generated by the high-speed rotation of the turbine. The turbofan or turboprop in this structure is The integrated design with the turbojet engine is more difficult to design, and the manufacturing and processing are also extremely complicated, so the cost is relatively high

Method used

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  • Turbofan postpose type engine
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  • Turbofan postpose type engine

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0027] like figure 1 Shown, the turbofan rear-mounted engine of the present invention at least includes:

[0028] One turbojet engine 91, in order to provide power;

[0029] The converter 92 is installed at the jet port behind the turbojet engine to convert the high-temperature, high-pressure, and high-speed airflow of the turbojet engine into the rotational power of the free turbine;

[0030] A free turbine 94 is installed at the gas outlet of the converter, and a speed reducer 95 is installed at the rear end of the shaft of the free turbine;

[0031] The fan 93 is connected on the power output shaft of the speed reducer. The fan can be set in one or more stages as required.

[0032] With the above-mentioned rear fan structure, the reducer and the fan are installed on the free turbine shaft at the rear of the converter, which is generated by the fr...

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Abstract

The invention discloses a turbofan postpose type engine, aiming to solve the problems of difficult design, high cost and the like in the prior art and comprising a turbojet engine, a converter and a fan, wherein the turbojet engine is used for providing power; the converter is installed on a gas vent behind the turbojet engine and is used for converting the jetting power of the turbojet engine into rotary power; and the fan is connected on a free turbine power output shaft behind the converter. By adopting the above fan postpose type structure, the designs of the fan and the turbojet engine are separated, the whole design is simple, the structure components are few, the weight is light and the processing manufacturing is easy; and the structure can be manufactured into a turbofan engine, thus improving the thrust-weight ratio greatly.

Description

technical field [0001] The invention relates to a turbofan engine, in particular to a turbofan rear-mounted engine. Background technique [0002] The full name of the turbofan engine is the turbofan engine (Turbofan), which is a kind of aircraft engine, developed from the turbojet engine (Turbojet). Compared with the turbojet engine, the main feature is that the area of ​​the first-stage compressor is much larger, and it is used as an air propeller (fan) to push part of the inhaled air back through the periphery of the jet engine. [0003] The existing turbofan engine relies on the airflow provided by the front-stage fan and compressor to burn the fuel in the combustion chamber, so that the expanded high-temperature and high-pressure gas impulses the thrust generated by the high-speed rotation of the turbine. The turbofan or turboprop in this structure is The integrated design with the turbojet engine is more difficult to design, and the manufacturing process is also extrem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02K3/062
Inventor 季承
Owner 季承
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