Abstract
The behavior of aluminum particles during Al/AP propellant combustion is studied by 25 kHz high-speed digital off-axis holography and high-speed microscopic imaging. The advantage of off-axis holography is that the effects of the enveloping flame are suppressed, thereby, achieving better burning particle imaging. Three-dimensional dynamics of the aluminum particles from a series of time-resolved holograms are given in order to study the motion behaviors of particles during combustion. Typical processes, e.g., formation and change of the condensed phase products, micro-explosion behavior, and diameter ratio of enveloping flame and Al particle, are analyzed. This work provides a new 3D approach, that is, high-speed digital off-axis holographic imaging, for studying solid propellant combustion.
| Original language | English |
|---|---|
| Pages (from-to) | 4401-4408 |
| Number of pages | 8 |
| Journal | Proceedings of the Combustion Institute |
| Volume | 38 |
| Issue number | 3 |
| DOIs | |
| State | Published - 2021 |
| Event | 38th International Symposium on Combustion, 2021 - Adelaide, Australia Duration: 24 Jan 2021 → 29 Jan 2021 |
Keywords
- Aluminized propellant
- Aluminum combustion
- Micro-explosion
- Off-axis holography
- Oxide cap
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