The Experimental Study about the Effect of Operating Conditions on Multi-tube Pulse Detonation Engine Performance

Kim, Jungmin; Han, Hao; Choi, Jeong-Yeol

doi:10.1007/s42405-018-0026-2

Cited by 6 publications

(2 citation statements)

References 15 publications

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“…The fundamental researches of the multi-tube PDE have been carried out by various experiments. 4,5 In 2019, Frolov et al 6 successfully carried out the experiment of unmanned aerial vehicle (UAV) which was powered by the new type naturally aspirated single tube and dual-tube pulse detonation engine. The results showed that the UAV with dual-tube pulse detonation engine could obtain higher flight speed.…”

Section: Introductionmentioning

confidence: 99%

Experimental research on operation performance and acoustic behavior of two-phase dual-tube pulse detonation engine

Huang

Wang

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part G:

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In order to research the operation synchronous of dual-tube pulse detonation engine, the operation performance and acoustic behavior of dual-tube pulse detonation engine under different fill fractions are studied experimentally. The results show that the instability of deflagration to detonation transition is the main reason for the non-synchronous work of the two tubes. With the increase of fill fraction, the detonation sound pressure increases gradually. In the region near the tube exit, the pressure and velocity of the shock wave attenuate rapidly, and the attenuation speed gradually slows down while the propagation distance increases. The time interval of detonation waves arriving at the tube exit of the two tubes can significantly affect the peak sound pressure and the duration of the sound wave outside the tube. With the increase of time interval, the peak sound pressure decreases and the total duration as well as the duration of the positive pressure increase. The synchronization of the working process of the dual-tube pulse detonation engine can be diagnosed by analyzing the pressure and duration of the sound wave outside the tube. The research results in this paper have certain reference significance for improving the synchronous of multi-tube pulse detonation engine and will be useful for the application of multi-tube pulse detonation engine in aircraft power system.

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Section: Introductionmentioning

confidence: 99%

Experimental research on operation performance and acoustic behavior of two-phase dual-tube pulse detonation engine

Huang

Wang

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part G:

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“…Fill fraction is one of the critical factors among all kinds of factors affecting PDE propulsion performance. Kim [9] carried out a series of experiments with operating frequencies of 40, 80, 120, 160, and 200 Hz. Results showed that a low fill fraction resulted in an incidence ratio (less than 50%) at the operating frequency of 200 Hz.…”

Section: Introductionmentioning

confidence: 99%

Research on Optical Diagnostic Method of PDE Working Status Based on Visible and Near-Infrared Radiation Characteristics

Huang

Kang

2021

Energies

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Fill fraction not only has a profound impact on the process of deflagration to detonation in pulsed detonation engine, but also affects the propulsion performance in both flight and ground tests. In this paper, a novel optical diagnostic method based on detonation exhaust radiation in visible and near-infrared region within 300–2600 nm is developed to determine the current working state in the gas–liquid two-phase pulsed detonation cycle. The results show that the radiation characteristic in each stage of detonation cycle is unique and can be a good indicator to infer the fill fraction. This is verified experimentally by comparison with the laser absorption spectroscopy method, which utilizes a DFB laser driven by ramp injection current to scan H2O transition of 1391.67 nm at a frequency of 20 kHz. Due to concentrated radiation intensity, time duration reaching accumulated radiant energy ratio of 50% in detonation status would be smaller than 1.2 ms, and detonation status would be easily distinguished from deflagration with this critical condition. In addition, the variation of important intermediates OH, CH, and C2 radicals during detonation combustion are obtained according to the analysis of detonation spectrum, which can also be proposed as a helpful optical diagnostics method for the combustion condition based on C radical concentration. The study demonstrates the feasibility of optical diagnostics based on radiation in visible and near-infrared regions, which could provide an alternative means to diagnose and improve pulsed detonation engine performance.

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Numerical investigation on detonation initiation using toroidal shock wave focusing

Chen

Zhao

Jia

et al. 2019

Aerospace Science and Technology

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The Experimental Study about the Effect of Operating Conditions on Multi-tube Pulse Detonation Engine Performance

Cited by 6 publications

References 15 publications

Experimental research on operation performance and acoustic behavior of two-phase dual-tube pulse detonation engine

Experimental research on operation performance and acoustic behavior of two-phase dual-tube pulse detonation engine

Research on Optical Diagnostic Method of PDE Working Status Based on Visible and Near-Infrared Radiation Characteristics

Numerical investigation on detonation initiation using toroidal shock wave focusing

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