2024-03-29T12:53:19Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:02003923
2023-01-16T04:59:14Z
673:674:675
Torque Around Axial Direction on Rotating Detonation Engines
Sawada, Satoru
Goto, Keisuke
Ishihara, Kazuki
Kawasaki, Akira
Matsuoka, Ken
Kasahara, Jiro
Matsuo, Akiko
Funaki, Ikkoh
open access
A rotating detonation engine (RDE) generates a continuous thrust with one or more rotating detonation waves. Because of the velocity on the order of kilometers/second, the reaction zone is relatively small. Therefore, the RDE realizes a short combustion chamber length. However, the detonation waves induce an azimuthal motion of propellant, resulting in torque around the thrust axis. Because the motion does not contribute to the thrust, the torque is important in terms of performance loss. Herein, we conducted combustion tests with a six-axis force sensor to simultaneously measure 0.149±0.009 Nm torque and 48.1±0.9 N thrust. A comparison of detonation waves captured by high-speed camera revealed that the torque followed the direction and was offset when the waves existed in both of two directions simultaneously, which indicates the possibility of controlling the torque. Under a mass flow rate at 87±9 g/s and an equivalence ratio at 1.43±0.28, when the azimuthal component of shear force was 8.8±0.6% of the thrust, 0.77±0.10% of the total kinetic energy of the exit flow was distributed to the azimuthal component of velocity and did not contribute to the thrust. We therefore concluded that the effect of the azimuthal motion on the RDE’s performance was small.
American Institute of Aeronautics and Astronautics
2022-10-13
2022-01
eng
journal article
AM
http://hdl.handle.net/2237/0002003923
https://nagoya.repo.nii.ac.jp/records/2003923
https://doi.org/10.2514/1.B38374
1533-3876
Journal of Propulsion and Power
38
1
59
70
https://nagoya.repo.nii.ac.jp/record/2003923/files/20210703_JPP_manuscript_forRepository.pdf
application/pdf
3.6 MB
2022-10-13