Multi-shock wave focusing ignition promotion experimental device and experimental method

By designing a multi-shock focus ignition promotion experimental device, the shock wave collision chamber and double-membrane shock tube are used to achieve the collection and focus of multi-angle shock waves, solving the problem of fast and reliable ignition in the detonation engine, and improving the ignition efficiency and system reliability.

CN119860922AActive Publication Date: 2025-04-22SHENZHEN RES INST OF WUHAN UNIV OF TECH
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Patent Information

Application Number
CN202510348642.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-03-24
Publication Date
2025-04-22
Estimated Expiration
2045-03-24

AI Technical Summary

Technical Problem

The prior art is difficult to achieve fast and reliable fuel ignition in detonation engines, especially when the aircraft is at a high speed. Traditional methods have problems of insufficient energy, high system complexity and poor stability.

Method used

A multi-shock focus ignition promotion experimental device is designed, including a shock wave collision chamber, a shock tube unit and a data acquisition unit. Multi-angle shock waves are generated through a double-membrane shock tube and a gas distribution assembly, and the multiple connection ports in the shock wave collision chamber are used to achieve the collection and focus of shock waves.

Benefits of technology

It has realized the disclosure of the shock focus rules and mechanisms under dual shock wave or even multi-shock coupling, which has improved the ignition efficiency, simple structure, good operability and strong repeatability, making up for the shortcomings of the traditional single shock focus ignition method.

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Abstract

The invention relates to the technical field of shock wave experiments, and discloses a multi-shock wave focusing ignition promotion experiment device and method, the experiment device comprises a shock wave collision bin, the side wall of the bin body is provided with a plurality of connecting ports, and the connecting ports have different interval angles; the shock tube unit comprises two or more double-membrane shock tubes and gas distribution assemblies connected with the double-membrane shock tubes; the data acquisition unit comprises a photomultiplier, a plurality of pressure sensors, a constant current adapter electrically connected with the pressure sensors, and a data processing system electrically connected with the photomultiplier and the constant current adapter; compared with a traditional single-shock-wave single-set focusing ignition mode, multi-angle shock wave mutual coupling focusing ignition is utilized, the relation between shock waves of different incident angles and shock wave focusing is conveniently researched, the structure is simple, operability is good, repeatability is high, the ignition efficiency is greatly improved, and the blank of multi-shock-wave coupling ignition and experimental devices is filled up.
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