Multi-pipe impulse detonating combustion camber and detonation method thereof

Abstract

The invention discloses a multi-tube pulse detonation combustion chamber and the detonation method. A detonation chamber inlet opening, a detonation jet flow inlet opening, a detonation jet flow outlet opening and a detonation chamber outlet opening are poditioned in sequence on the detonation chamber, the detonation jet flow outlet opening is connected with the detonation jet flow inlet opening of the adjacent detonation unit, and a plurality of detonation units are connected to form a circular combustion chamber with a plurality of detonation chamber inlet opening and a plurality of detonation chamber outlet opening. The detonation starting device is positioned on the detonation chamber of one of the detonation units. When the detonative gas mixture is filled in the whole detonation chamber 2 through the detonation chamber inlet opening 1 of each detonation unit under the same condition, the detonation starting device 6 of the invention begins to work. The invention realizes the multi-tube pulse detonation combustion chamber with very high working frequency without the dependency of the high energy and high frequency ignition system, and the invention can be used to replace the main combustion chamber or booster combustion chamber of the existing gas-turbine engine, or the combustion chamber of the rotating ramjet engine.

Description

technical field [0001] The invention relates to the field of power, in particular to a pulse detonation combustion chamber and its detonation method. Background technique [0002] There are two kinds of combustion waves in nature: one is deflagration wave and the other is detonation wave. The detonation wave propagates toward the unburned mixture at a speed of several kilometers per second. A detonation wave is essentially a shock wave followed by a combustion wave. The detonation wave can generate extremely high gas pressure (greater than 15 to 55 atmospheres) and gas temperature (greater than 2800K). Due to the extremely fast propagation speed of the detonation wave, the subsequent combustion process can be regarded as a constant volume combustion process, so its combustion efficiency very high. Due to the high efficiency of the pulse detonation cycle, and the pulse mode of operation, this makes it very attractive for propulsion systems. When the working frequency reac...

AI Technical Summary

Problems solved by technology

Therefore, pulse detonation engines using detonators are more complex

For the air-breathing pulse detonation engine, due to the dilution of nitrogen in the air, the sensitivity of the mixture is greatly reduced, the energy and power required for direct detonation are greatly increased, and the economy of direct detonation is reduced.

If a low-energy ignition source is used, the ignition delay time is greatly increased, and the distance and time for the transition from deflagration to detonation are also very long

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