Pulse detonation engine

Abstract

The invention relates to a pulse detonation engine. The detonation engine comprises a detonation tube and an air inlet part; the air inlet part comprises conical flow guide caps, at least one annularV-shaped groove flow guide plate, annular flow guide plates and a support; the flow guide caps and the annular V-shaped groove flow guide plates are arranged on the support; the support and the annular flow guide plates are fixedly connected with the detonation tube; the openings of the conical flow guide caps and the openings of the annular V-shaped groove flow guide plates face the outlet of thedetonation tube; the annular flow guide plate is inclined towards the side of the outlet of the detonation tube; the conical flow guide caps and the annular V-shaped groove flow guide plates are sequentially distributed in the axial direction of the detonation tube towards the outlet and are sequentially distributed from inside to outside in the radial direction of the detonation tube; the conical flow guide caps, the annular V-shaped groove flow guide plates and the annular flow guide plates are arranged at intervals, and the orthographic projections of every two adjacent ones on a plane inthe axial direction of the detonation tube have an overlapped area; and the orthographic projections of every two adjacent ones on a plane in the radial direction of the detonation tube have an overlapped area.

Description

technical field [0001] The present disclosure relates to the technical field of engines, in particular, to a pulse detonation engine. Background technique [0002] The pulse detonation engine is a new concept propulsion system based on detonation combustion. The detonation wave generated by detonation combustion is directly used in the combustion chamber to compress the gas and generate power. Compared with the traditional engine, the pulse detonation engine saves the compressor, turbine and other components, and has the advantages of simple structure, high thrust-to-weight ratio, wide operating range, and low use and maintenance costs. It is one of the ideal power for future advanced aerospace vehicles. one. [0003] The intake structure of the air-breathing pulse detonation engine has an important influence on the working characteristics of the engine. Existing pulse detonation engines mostly adopt the intake valve structure to meet the requirements of unsteady detonatio...

AI Technical Summary

Problems solved by technology

Existing pulse detonation engines mostly adopt the intake valve structure to meet the requirements of unsteady detonation combustion for indirect intake. The intermittent intake mode of pulse detonation engines currently mostly adopts the intake valve structure, but it increases the The complexity of the structure and the difficulty of coordinated control of the vibration engine also reduce the reliability and service life of the entire engine. At the same time, the gas frequently stops flow and accelerates causing energy loss.

[0004] In addition, there are also some pulse detonation engines with a fixed intake head structure, and the pulse detonation engine with a fixed intake head, because the pressure of the detonation chamber is much higher than that of the intake port during the detonation stage, the open fixed There is a large back-propagation loss in the intake channel, and at the same time, the cone-shaped solid intake head also increases the mass of the pulse detonation engine, which is not conducive to improving the thrust-to-weight ratio

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