A kind of detonation engine that can work stably with pulse pre-detonation

Abstract

A detonation engine is composed of a pre-detonating combustion tube (1), spiral blades (2), a fuel air premixing chamber (3), a negative electrode supercharging base stack (10), a positive electrode rotating supercharging base stack (13), a premixing chamber internal spiral flow guide strip (14), a pre-detonating combustion tube external spiral flow guide strip (15), a high pressure ignition control ECU (19) and a detonation spray tube (22). The premixing chamber internal spiral flow guide strip (14) and the pre-detonating combustion tube external spiral flow guide strip (15) enable an explosive gas mixture to be mixed fully and form a vortex airflow, the gas mixture is ignited by a combusting airflow at a gathering position, detonation happens, and thus the situation that the explosive gas mixture detonates is ensured. The detonation engine has the advantages of being (1)capable of solving explosive initiation, control and rapid maintaining of detonation, (2) capable of achieving atomization, spraying, and mixing of liquid fuel and an oxidizing agent, and (3) capable of generating stable pushing force, and achieving high frequency operation. The detonation engine solves the main problems faced by pulse detonation engines at the same time, and has good marketing prospects.

Description

technical field [0001] The invention relates to a power machine, in particular to a pulse pre-detonation detonation engine which can work stably, and belongs to the technical field of aviation power. Background technique [0002] The pulse detonation engine (PDE) directly uses the detonation wave generated by detonation combustion in the combustion chamber to compress the gas, and then generate power. Compared with the traditional engine, the pulse detonation engine saves the compressor, turbine and other components, and has the characteristics of simple structure, high thrust-to-weight ratio, and low cost. In the future, whether rockets, missiles, or aerospace aircraft can use pulse detonation engines, it is also considered to be the most potential aerospace power project in the 21st century. [0003] The basic working steps of PDE include four steps: the first step is to fill the detonation combustion chamber with detonable mixture; the second step is to excite the detona...

AI Technical Summary

Problems solved by technology

[0009] 4) Due to the unstable thrust, the practical PDE needs to adopt a multi-tube structure with high frequency (greater than 80 Hz), and there is a problem of dynamic coupling between the multi-tube detonation combustion chambers;

[0010] 5) Cooling problem

[0011] 6) There will be strong vibration and loud noise during detonation combustion

Images