Editing Pulse detonation engine (section)

== Uses ==

If both fuel and oxidizer are carried by the vehicle a pulse detonation engine is independent of the atmosphere and it can be used in [[spaceflight]]. On 26 July 2021 (UTC), Japan's space agency [[JAXA]] successfully tested a pulse detonation rocket engine in space on a [[S-520]] sounding rocket flight.<ref name="jaxa">{{cite news |last1=Hebden |first1=Kerry |title=Japan successfully tests rocket engine propelled by shock waves |url=https://room.eu.com/news/japan-successfully-tests-rocket-engine-propelled-by-shock-waves |access-date=20 August 2021 |work=Room, The Space Journal of Asgardia |date=28 July 2021}}</ref>  The upper stage of the rocket used a [[rotating detonation engine]] (RDE) as the main engine and a S-shaped pulse detonating engine was used to de-spin the stage after the main engine burn. PDE operated three times in the flight for a total of 14 cycles.<ref>{{Cite journal |last1=Buyakofu |first1=Valentin |last2=Matsuoka |first2=Ken |last3=Matsuyama |first3=Koichi |last4=Kawasaki |first4=Akira |last5=Watanabe |first5=Hiroaki |last6=Itouyama |first6=Noboru |last7=Goto |first7=Keisuke |last8=Ishihara |first8=Kazuki |last9=Noda |first9=Tomoyuki |last10=Kasahara |first10=Jiro |last11=Matsuo |first11=Akiko |last12=Funaki |first12=Ikkoh |last13=Nakata |first13=Daisuke |last14=Uchiumi |first14=Masaharu |last15=Habu |first15=Hiroto |display-authors=1 |date=2023 |orig-date=2022 |title=Flight Demonstration of Pulse Detonation Engine Using Sounding Rocket S-520-31 in Space |url=https://www.researchgate.net/publication/363205605 |journal=Journal of Spacecraft and Rockets |volume=60 |issue=1 |pages=181–189 |doi=10.2514/1.A35394 |bibcode=2023JSpRo..60..181B |issn=0022-4650}}</ref>