Rotating detonation engine

A rotating detonation engine (RDE) uses a form of pressure gain combustion, where one or more detonations continuously travel around an annular channel. Computational simulations and experimental results have shown that the RDE has potential in transport and other applications.^[1]^[2]

In detonative combustion, the flame front expands at supersonic speed. It is theoretically more efficient than conventional deflagrative combustion by as much as 25%.^[3] Such an efficiency gain would provide major fuel savings.^[4]^[5]

Disadvantages include instability and noise.

^ Lu, Frank; Braun, Eric (7 July 2014). "Rotating Detonation Wave Propulsion: Experimental Challenges, Modelling, and Engine Concepts". Journal of Propulsion and Power. 30 (5). The American Institute of Aeronautics and Astronautics: 1125–1142. doi:10.2514/1.B34802. S2CID 73520772.
^ Wolanski, Piotr (2013). "Detonative Propulsion". Proceedings of the Combustion Institute. 34 (1): 125–158. Bibcode:2013PComI..34..125W. doi:10.1016/j.proci.2012.10.005.
^ Птичкин, Сергей (2018-01-18). "В России испытали модель детонационного двигателя для ракет будущего". Российская газета (in Russian). Retrieved 2018-02-10.
^ Cao, Huan; Wilson, Donald (2013). "Parametric Cycle Analysis of Continuous Rotating Detonation Ejector-Augmented Rocket Engine". 49th AIAA/ASME/SAE/ASEE Joint Propulsion Conference. doi:10.2514/6.2013-3971. ISBN 978-1-62410-222-6.
^ Schwer, Douglas; Kailasanath, Kailas (25 September 2010). "Numerical Investigation of the Physics of Rotating Detonation Engines". Proceedings of the Combustion Institute. 33 (2). Elsevier, Inc.: 2195–2202. Bibcode:2011PComI..33.2195S. doi:10.1016/j.proci.2010.07.050.

[1] Lu, Frank; Braun, Eric (7 July 2014). "Rotating Detonation Wave Propulsion: Experimental Challenges, Modelling, and Engine Concepts". Journal of Propulsion and Power. 30 (5). The American Institute of Aeronautics and Astronautics: 1125–1142. doi:10.2514/1.B34802. S2CID 73520772.

[auto2-2] Wolanski, Piotr (2013). "Detonative Propulsion". Proceedings of the Combustion Institute. 34 (1): 125–158. Bibcode:2013PComI..34..125W. doi:10.1016/j.proci.2012.10.005.

[3] Птичкин, Сергей (2018-01-18). "В России испытали модель детонационного двигателя для ракет будущего". Российская газета (in Russian). Retrieved 2018-02-10.

[4] Cao, Huan; Wilson, Donald (2013). "Parametric Cycle Analysis of Continuous Rotating Detonation Ejector-Augmented Rocket Engine". 49th AIAA/ASME/SAE/ASEE Joint Propulsion Conference. doi:10.2514/6.2013-3971. ISBN 978-1-62410-222-6.

[5] Schwer, Douglas; Kailasanath, Kailas (25 September 2010). "Numerical Investigation of the Physics of Rotating Detonation Engines". Proceedings of the Combustion Institute. 33 (2). Elsevier, Inc.: 2195–2202. Bibcode:2011PComI..33.2195S. doi:10.1016/j.proci.2010.07.050.

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