A multi-tube helical pulse detonation engine

Abstract

The invention provides a multi-pipe spiral pulse detonation engine. The engine comprises a gas inlet distribution device and a main engine body; multiple spiral detonation pipes are evenly and fixedlydistributed between the an engine outlet cove plate and an engine closed port cover plate according to the center of a gas chamber; the gas inlet distribution device comprises a gas oxidizing agent inlet pipe, multiple fuel gas inlet branch pipes, gas oxidizing agent inlet branch pipes and a gas oxidizing agent chamber cover plate; the gas chamber is divided into a fuel gas chamber and a gas oxidizing agent chamber through a partition plate, the fuel gas chamber is connected with the spiral detonation pipes through the fuel gas inlet branch pipes, the gas oxidizing agent chamber cover plate is arranged between the gas oxidizing agent chamber and the fuel gas inlet branch pipes, and the gas oxidizing agent inlet branch pipes are communicated with the gas oxidizing agent chamber and the spiral detonation pipes. According to the multi-pipe spiral pulse detonation engine, the horizontal length of the engine can be greatly shortened, the working frequency of the engine can be greatly improved, and convenience is provided for the engine to output power continuously and stably.

Description

technical field [0001] The invention relates to the technical field of aviation propulsion, in particular to a multi-tube helical pulse detonation engine. Background technique [0002] As a kind of combustion wave, the detonation wave is composed of a strong shock wave followed by a violent exothermic zone. The shock wave compresses the reactant, just like the piston between the reactant and the product, because there is not enough time to equalize the pressure, so that the detonation wave approximates constant volume combustion, and the engine based on constant volume combustion has more Higher thermal efficiency. The potential advantage of high thermal cycle efficiency drives research on detonation-based power devices. [0003] Pulse detonation engine is a new concept engine that uses pulsed detonation waves to generate thrust. Continuous output of strong thrust requires the engine to have a high operating frequency, and at the same time, it is necessary to generate a s...

AI Technical Summary

Problems solved by technology

Subsequently, the patent with the publication number CN 103899436A and the patent with the publication number CN 106704036A all relate to the helical pulse detonation engine, and both adopt the form of arranging a plurality of channels (detonation chambers) in the annular shell, However, in the two patents, adjacent detonation chambers are closely connected, and there is no gap, which is not conducive to engine heat dissipation

And there are moving parts and seals, etc., so the structure is relatively complicated

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