Thrust boosting system and method for engine

Abstract

The invention provides a thrust boosting system for an engine The thrust boosting system comprises a gel propellant accommodating device, an ejector, an igniter, a pipeline, a booster, a flow valve and a central processor, wherein the gel propellant accommodating device is used for accommodating a gel propellant; the ejector is arranged in the thrust boosting combustion chamber or the inner jet tube of the engine, and is used for ejecting the gel propellant; the igniter is arranged in the thrust boosting combustion chamber or the inner jet tube of the engine, and is used for igniting the gel propellant; the pipeline is in fluid communication with the gel propellant accommodating device and the ejector; the booster is coupled on the pipeline, and is used for boosting the gel propellant in the pipeline; the flow valve is coupled on the pipeline and is used for adjusting the flow of the gel propellant in the pipeline; the central processor is electrically connected with the booster and the flow valve, and is used for controlling the boosting value of the booster on the gel propellant and the aperture of the flow valve. According to the system and the method, thrust of the engine can be increased under the condition that an air compressor is not damaged, and the technical problem of instance increase of thrust under a special working condition of the engine is solved.

Description

technical field [0001] The invention belongs to the field of aero-engines, and in particular relates to a thrust boosting system and method for engines. Background technique [0002] Nowadays, the power plant of aircraft, that is, aeroengine, has developed to a very mature stage, and its energy source is aviation kerosene. [0003] The maximum thrust of an aeroengine depends largely on the mass air flow through the engine. As the atmospheric pressure decreases with altitude, the air density decreases and engine thrust decreases somewhat. When taking off at high temperature and plateau, the situation of insufficient engine thrust is particularly obvious. Military aircraft usually increase thrust by spraying water at the inlet of the compressor / combustion chamber or turning on afterburner. [0004] However, the method of spraying water at the inlet position of the compressor or the combustion chamber has problems such as affecting the life of the compressor blades, interfer...

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Problems solved by technology

[0004] However, the method of spraying water at the inlet of the compressor or the combustion chamber has problems such as affecting the life of the compressor blades, disturbing the air flow, and polluting the compressor.

[0005] The thrust can also be increased by spraying water in the nozzle, but because the gas pressure in the nozzle is expanded by the turbine, the pressure is low, and the thrust gain is limited, and the fuel consumption rate is greatly increased when the afterburner is turned on, and the flight range of the aircraft is shortened.

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