Abstract
A novel method for the operation of a pulse detonation combustor is proposed and demonstrated for realizing high frequencies without using a purging material. In the developed operation method, oxygen is supplied to the pulse detonation combustor in the valveless mode. Fuel, which is supercritical ethylene, is injected into the pulse detonation combustor at a suitable timing using an automotive fuel injector. Because of the Joule-Thomson effect, a phase transition of ethylene from the supercritical state to a low-temperature vapor occurs, and a detonable mixture is produced by mixing with oxygen. In demonstration experiments, a small pulse detonation combustor having an inner diameter of 10 mm, a total length of 190 mm, and an inner volume of 14.5 mL is used, and the operation frequency varies between 100 and 500 Hz. The measured flame propagation speeds are 107 ± 6% of the Chapman-Jouguet detonation speed. In addition, the operation frequency of 500 Hz is 41% of the gas-dynamic upper limit, which is obtained using the one-dimensional model proposed by Endo et al.
| Original language | English |
|---|---|
| Pages (from-to) | 43-50 |
| Number of pages | 8 |
| Journal | Journal of Propulsion and Power |
| Volume | 33 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2017 |
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ASJC Scopus subject areas
- Fuel Technology
- Aerospace Engineering
- Mechanical Engineering
- Space and Planetary Science
Cite this
Development of high-frequency pulse detonation combustor without purging material. / Matsuoka, Ken; Muto, Kohei; Kasahara, Jiro; Watanabe, Hiroaki; Matsuo, Akiko; Endo, Takuma.
In: Journal of Propulsion and Power, Vol. 33, No. 1, 2017, p. 43-50.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Development of high-frequency pulse detonation combustor without purging material
AU - Matsuoka, Ken
AU - Muto, Kohei
AU - Kasahara, Jiro
AU - Watanabe, Hiroaki
AU - Matsuo, Akiko
AU - Endo, Takuma
PY - 2017
Y1 - 2017
N2 - A novel method for the operation of a pulse detonation combustor is proposed and demonstrated for realizing high frequencies without using a purging material. In the developed operation method, oxygen is supplied to the pulse detonation combustor in the valveless mode. Fuel, which is supercritical ethylene, is injected into the pulse detonation combustor at a suitable timing using an automotive fuel injector. Because of the Joule-Thomson effect, a phase transition of ethylene from the supercritical state to a low-temperature vapor occurs, and a detonable mixture is produced by mixing with oxygen. In demonstration experiments, a small pulse detonation combustor having an inner diameter of 10 mm, a total length of 190 mm, and an inner volume of 14.5 mL is used, and the operation frequency varies between 100 and 500 Hz. The measured flame propagation speeds are 107 ± 6% of the Chapman-Jouguet detonation speed. In addition, the operation frequency of 500 Hz is 41% of the gas-dynamic upper limit, which is obtained using the one-dimensional model proposed by Endo et al.
AB - A novel method for the operation of a pulse detonation combustor is proposed and demonstrated for realizing high frequencies without using a purging material. In the developed operation method, oxygen is supplied to the pulse detonation combustor in the valveless mode. Fuel, which is supercritical ethylene, is injected into the pulse detonation combustor at a suitable timing using an automotive fuel injector. Because of the Joule-Thomson effect, a phase transition of ethylene from the supercritical state to a low-temperature vapor occurs, and a detonable mixture is produced by mixing with oxygen. In demonstration experiments, a small pulse detonation combustor having an inner diameter of 10 mm, a total length of 190 mm, and an inner volume of 14.5 mL is used, and the operation frequency varies between 100 and 500 Hz. The measured flame propagation speeds are 107 ± 6% of the Chapman-Jouguet detonation speed. In addition, the operation frequency of 500 Hz is 41% of the gas-dynamic upper limit, which is obtained using the one-dimensional model proposed by Endo et al.
UR - http://www.scopus.com/inward/record.url?scp=85012231864&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85012231864&partnerID=8YFLogxK
U2 - 10.2514/1.B36068
DO - 10.2514/1.B36068
M3 - Article
AN - SCOPUS:85012231864
VL - 33
SP - 43
EP - 50
JO - Journal of Propulsion and Power
JF - Journal of Propulsion and Power
SN - 0748-4658
IS - 1
ER -