Combustion chamber of a pulse detonation engine

Abstract

The invention discloses a pulse-detonation engine combustion chamber, and belongs to the technical field of detonation engines. A plurality of rows of gas inlet devices are arranged on a gas inlet path housing and the combustion chamber wall surface; and every two rows of pneumatic gas inlet devices are spaced by a distance which is 0.5-1 time the diameter of the combustion chamber. Each gas inlet device is composed of a drainage section and a gas inlet, wherein the gas inlet path housing defines a circular ring shaped secondary gas inlet path, the drainage section is in the form of a hollow cylinder connecting the gas inlet path housing to the engine wall surface, the cylinder has the same angles of inclination in the axial direction and the peripheral direction of an engine, and a plurality of gas inlets are formed in the front wall surface of the cylinder. The plurality of rows of gas inlet devices are uniformly distributed in a staggered mode in the peripheral direction of the combustion chamber, and positions of the rear row of gas inlet devices are determined by rotating positions of the front row of gas inlet devices clockwise. Other parts are not arranged inside the combustion chamber, so that the service life of the combustion chamber is long; and the drainage sections are arranged outside the combustion chamber, so that internal flow resistance of the detonation chamber is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of detonation engines, in particular to a pulse detonation combustion chamber based on aerodynamic turbulence enhanced detonation. Background technique [0002] The pulse detonation engine is a new concept propulsion device that uses high-temperature, high-pressure gas generated by intermittent detonation waves to generate thrust. Pulse detonation engines can be divided into rocket-type pulse detonation engines and air-breathing pulse detonation engines according to whether they have their own oxidant. [0003] There are two ways of detonation detonation, one is direct detonation and the other is indirect detonation. Direct detonation requires a huge amount of ignition energy, which is not practical; indirect detonation is to form a detonation wave through the transition from slow combustion to detonation, using a small ignition energy to form a slow combustion wave, and then through a series of DDT enhance...

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Problems solved by technology

[0004] Invention patent 201310059114.9 discloses "a pulse detonation engine combustion chamber structure". Although the pulse detonation engine combustion chamber structure reduces the flow resistance, the impact of the flow resistance is still great, and the problem of ablation also appears

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