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Citation: Xiangxi Kong, Mingyang He, Yineng Ling, Hui Wang, Qixian Xie, Baili Li, Wurong Ren. Digitally Enhanced Measurement of Ignition Delay Time Measurement for Hypergolic Propellants[J]. University Chemistry, ;2026, 41(1): 95-106. doi: 10.12461/PKU.DXHX202505005 shu

Digitally Enhanced Measurement of Ignition Delay Time Measurement for Hypergolic Propellants

Foundation Department, Space Engineering University, Beijing 101416, China

Corresponding author: Wurong Ren, renwurong@163.com
Received Date: 8 May 2025
Revised Date: 2 September 2025

Hypergolic propellants represent a predominant development direction in propulsion systems due to their ignition device-free characteristic, with ignition delay time serving as their primary performance metric. This study employed a custom-designed drop-test apparatus to examine the ignition characteristics between propellant fuel and high-concentration hydrogen peroxide oxidizer, while optimizing the experimental procedure through digital design. To overcome the challenge of processing extensive image data in ignition delay time measurement, we developed Python-based software incorporating the YOLOv8 deep learning algorithm. This implementation of image recognition technology enables precise analysis of propellant self-ignition delay time, facilitating efficient and accurate experimental data processing. Furthermore, integrating this innovative experimental approach into the “University Chemistry” curriculum has demonstrated significant enhancement in student engagement and learning motivation.
- Hypergolic propellant,
- Droplet test,
- Ignition delay time,
- Deep Learning,
- Application in Teaching
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