Water or methyl alcohol spraying thrust increasing system suitable for small turbojet engine

An engine and methanol technology, applied in the aviation field, can solve the problems of increased engine cost, complex system structure, and increased weight, and achieve the effects of no power consumption, low technical difficulty, and low cost

CN107842423AInactive Publication Date: 2018-03-27INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2018-03-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a turbojet engine. The turbojet engine comprises an air inlet way, an air compressor, a combustion chamber, a turbine, a tail spraying pipe, and a thrust increasing device. Airenters the turbojet engine through the air inlet way. The air compressor is arranged behind the air inlet way so that the pressure of air entering through the air inlet way can be increased. Air passes through the air compressor and then enters the combustion chamber to be mixed with fuel oil to be mixed and combusted, and expansion acting is conducted. The turbine and the air compressor are coaxially arranged on an engine shaft so that high-temperature and high-pressure gas flowing out of the combustion chamber can push the turbine to rotate. High-temperature and high-pressure gas flowing out of the turbine continues to expand in the tail spraying pipe and is discharged in the axial direction of the engine. The thrust increasing device sprays liquid into the air inlet way so that the inlet flow of the turbojet engine can be increased.
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Description

technical field

[0001] The invention relates to the field of aviation, and more specifically relates to an aeroengine and its booster system, which are mainly applicable to small high-speed unmanned aerial vehicles and their turbojet power devices. Background technique

[0002] Small high-speed UAVs can be used for reconnaissance, detection, attack, targeting, etc. The flying altitude is mostly below 12,000 meters, and the cruising time is relatively short, generally no more than 2 hours. At the same time, due to its special tactical purpose, it is required that the aircraft can reach the high subsonic speed of Mach 0.7-0.9 in a short time, and some supersonic types even need to fly at the supersonic speed of Mach 1.2-1.5, which puts higher demands on the power system of the aircraft. The requirements of the requirements require the engine to have the basic performance of low cost, high performance, and short life, and it must be able to achieve short-term high-thrust output...

Examples

Embodiment Construction

[0038] The present invention will be further described in detail below in conjunction with the examples, the following examples are explanations of the present invention and the present invention is not limited to the following examples.

[0039] A turbojet engine according to the invention comprising:

[0040] an air intake duct through which air enters said turbojet engine;

[0041] an air compressor arranged after the air inlet to increase the pressure of the air entering through the air inlet;

[0042] Combustion chamber, after the air passes through the compressor, it enters the combustion chamber to be mixed with fuel for combustion, and expands to perform work;

[0043] a turbine, the turbine is coaxially installed on the engine shaft with the compressor, and the high-temperature and high-pressure gas flowing out of the combustion chamber drives the turbine to rotate; and

[0044] The tail nozzle, in which the high-temperature and high-pressure gas flowing out of the ...