Continuous rotary knocking engine

Abstract

The invention provides a continuous rotary knocking engine. The engine comprises an inner shell, an outer shell, an insulating sleeve, an ignition core and an insulating connecting piece, the outer shell comprises a front part and a rear part, the front part and the inner shell together form an annular airflow channel, the rear part is electrically connected with the low-voltage end of a high-voltage power supply, an annular combustion chamber is formed by the insulating sleeve and the rear part, and the ignition core is electrically connected with the high-voltage end of the high-voltage power supply. When the continuous rotary detonation engine is connected with the high-voltage power supply, a large-volume and high-concentration low-temperature plasma discharge streamer is generated inthe annular combustion chamber, further, when the voltage difference between the low-voltage end and the high-voltage end of the high-voltage power supply is large enough, the low-temperature plasma discharge streamer inside the annular combustion chamber is converted into a large amount of discharge streamer filaments and generates a large amount of active substances, explosible mixed gas in theannular combustion chamber is broken down and is subjected to rotary knocking combustion, due to the fact that the chemical reaction rate is accelerated by the active substances, the ignition effect is enhanced, and therefore the time from detonation to knocking is shortened.

Description

technical field [0001] The invention relates to the technical field of aerospace equipment, in particular to a continuously rotating detonation engine. Background technique [0002] In recent years, with the continuous deepening of research on hypersonic vehicles and single-stage orbital power systems, the technology of new continuous rotating detonation engines has been rapidly developed. Studies have shown that the propulsion technology based on detonation combustion can greatly reduce fuel consumption and greatly improve the specific impulse characteristics of the power plant. meaning. [0003] The continuous rotating detonation engine is a power technology that utilizes detonation combustion. Its characteristics and advantages are: (1) only one successful detonation is required, and the detonation wave can continuously propagate along the circumferential direction of the combustion chamber; (2) the combustion rate is fast, The heat release intensity is high, the combus...

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Problems solved by technology

[0004] However, since detonation combustion is a process of gradually changing from deflagration to detonation, and the transition between deflagration and detonation takes a certain amount of time and is not easy to control, compared with traditional isobaric combustion, detonation combustion still has difficulty in triggering. The shortcomings of high and poor controllability have also become the main reason for restricting detonation combustion from being used in power propulsion devices

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