Control method of detonation pipe for high-frequency pulse detonation engine

Abstract

The invention provides a detonation pipe for a high-frequency pulse detonation engine and a control method thereof. The detonation pipe is characterized in that two fuel inlet solenoid valves are connected at a fuel inlet of the detonation pipe; two oxidant inlet solenoid valves are connected at an oxidant inlet of the detonation pipe; two insolated gas inlet solenoid valves are connected at an insolated gas inlet of the detonation pipe; and two igniters are mounted on the detonation pipe, wherein in one control period, a set of the solenoid valves are used for running and one igniter is usedfor igniting in the front half period and the other set of the solenoid valves are used for running and the other igniter is used for igniting in the latter half period. The invention can efficientlyincrease the work frequency of the pulse detonation engine and greatly decrease the demand on the solenoid valve response frequency. The solenoid valve which has the response frequency as half as thework frequency of the engine can be used, in order to decrease the load of the solenoid valve and help prolonging the service life of the solenoid valve.

Description

technical field [0001] The invention belongs to the technical field of engines, in particular to a detonation tube of a high-frequency pulse detonation engine and a control method thereof. Background technique [0002] Pulse Detonation Engine (PDE) is an unsteady propulsion system that uses pulse detonation waves to generate periodic impulses. Different from traditional engines, pulse detonation engines are intermittently working power devices based on detonation combustion. Therefore, how to quickly and reliably generate detonation waves in the detonation tube is the core issue in the design of pulse detonation engines, and it is also a key factor that determines the performance of pulse detonation engines. [0003] The research shows that the operating frequency of the pulse detonation engine has an important influence on the performance parameters of the pulse detonation engine. Ideally, the thrust of a pulse detonation engine increases linearly with the increase of ope...

AI Technical Summary

Problems solved by technology

However, the current research level of high-frequency solenoid valves at home and abroad determines that high-frequency solenoid valves can only be made with a diameter below Φ2mm, which cannot meet the working needs of pulse detonation engines under large flow rates.

However, the electromagnetic valves that can meet the working flow requirements of pulse detonation engines generally do not have a high frequency, which has become a bottleneck factor that limits the research of pulse detonation engines and seriously restricts the subsequent development of pulse detonation engines.

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