Advances in Detonative Propulsion (2nd Edition)

A special issue of Aerospace (ISSN 2226-4310).

Deadline for manuscript submissions: closed (28 February 2026) | Viewed by 10869

Special Issue Editors


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Guest Editor
Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China
Interests: oblique detonation engine; detonative propulsion; supersonic combustion; scramjets; high-enthalpy shock tunnel; high-temperature gas dynamics; hypersonic aerodynamics and aerothermal dynamics
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Guest Editor
School of Power and Energy, Northwestern Polytechnical University, Xi’an 710072, China
Interests: combustion and flow; detonation; two-phase flow; low-carbon fuel; optimization; power and energy

Special Issue Information

Dear Colleagues,

Detonative propulsion represents the new generation of hypersonic propulsion techniques. Research in this field is booming, and many advances have been made globally in recent years. This Special Issue aims to publish these cutting-edge research results to promote the development of detonative propulsion and the cooperation of researchers in this field.

The topics for this Special Issue are broad, including (but not limited to):

  • Oblique detonation engines;
  • Rotating detonation engines;
  • Pulsed detonation engines;
  • Shock-induced supersonic combustion;
  • Detonation-assisted scramjets;
  • Propulsive performance analysis of detonation engines;
  • The fundamental physics of gaseous detonation and multiphase detonation;
  • The design of detonation engines;
  • Other research related to detonative propulsion techniques.

We invite authors to contribute new research results to this Special Issue.

Dr. Yunfeng Liu
Prof. Dr. Zhiwu Wang
Guest Editors

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Aerospace is an international peer-reviewed open access monthly journal published by MDPI.

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Keywords

  • oblique detonation engine
  • rotating detonation engine
  • pulsed detonation engine
  • shock-induced supersonic combustion
  • detonation-assisted scramjets
  • propulsive performance analysis
  • gaseous detonation
  • multiphase detonation

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Related Special Issue

Published Papers (5 papers)

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Research

17 pages, 6691 KB  
Article
Continuous Detonation Combustor Operating on a Methane–Oxygen Mixture: Test Fires, Thrust Performance, and Thermal State
by Sergey M. Frolov, Vladislav S. Ivanov, Yurii V. Kozarenko and Igor O. Shamshin
Aerospace 2026, 13(1), 30; https://doi.org/10.3390/aerospace13010030 - 28 Dec 2025
Viewed by 597
Abstract
Test fires of a rotating detonation engine (RDE) annular combustor operating on a methane–oxygen mixture were conducted. Compared to the original RDE combustor previously tested, it was modified in terms of changing the layout of the water cooling system, the positions of ports [...] Read more.
Test fires of a rotating detonation engine (RDE) annular combustor operating on a methane–oxygen mixture were conducted. Compared to the original RDE combustor previously tested, it was modified in terms of changing the layout of the water cooling system, the positions of ports for sensors, and the shape of the supersonic nozzle. The stable operation process with a single detonation wave continuously rotating in the annular gap with the velocity of ~1900 m/s (rotation frequency of ~6 kHz) was obtained in the wide range of flow rates of propellant components. This is an important distinguishing feature of the present RDE combustor compared to the analogs known from the literature, which usually exhibit an increase in the number of simultaneously rotating detonation waves with an increase in the flow rates of propellant components. Compared to the original RDE combustor, the maximum duration of operation and the attained sea-level specific impulse were increased from 1 to 30 s and from 250 to 277 s, respectively. The thermal states of all heat-stressed elements of the combustor were obtained. The maximum heat fluxes are registered in the water cooling jackets of the central body and the combustor outer wall. Heat losses in the water cooling system are shown to increase with the average pressure in the combustor. The maximum value of the average heat flux over 20 MW/m2 is achieved on the combustor outer wall. The average heat flux into the combustor outer wall is approximately 20% higher than that into the central body. The average heat flux into the nozzle is several times lower than similar values for the combustor outer wall and central body. The total heat loss into the water-cooled walls of the combustor reach about 10% of the total thermal power of the combustor. Full article
(This article belongs to the Special Issue Advances in Detonative Propulsion (2nd Edition))
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30 pages, 5354 KB  
Article
Convective Flux Analysis on the Instability of One-Dimensional Detonation
by Yunfeng Liu
Aerospace 2025, 12(11), 1024; https://doi.org/10.3390/aerospace12111024 - 19 Nov 2025
Cited by 3 | Viewed by 1064
Abstract
One-dimensional numerical simulations using the Euler equations and irreversible one-step Arrhenius kinetics are conducted to study the instability mechanism of a one-dimensional gaseous detonation. By increasing the activation energy, this study identifies the characteristics of stable detonation, periodic detonation, pulsating detonation, and detonation [...] Read more.
One-dimensional numerical simulations using the Euler equations and irreversible one-step Arrhenius kinetics are conducted to study the instability mechanism of a one-dimensional gaseous detonation. By increasing the activation energy, this study identifies the characteristics of stable detonation, periodic detonation, pulsating detonation, and detonation quenching. The key difference between this study and previous research is that it is the first quantitative analysis of convective flux, kinetic energy flux, and chemical reaction heat flux. These three fluxes undergo intensive change on the detonation front and the flow field at each time step depends on the algebraic summation of them. The mechanisms of detonation instability, detonation reignition, and the detonation quenching process can be revealed quantitatively by analyzing these fluxes. The detonation instability is the intrinsic property of the reactive Euler system. Full article
(This article belongs to the Special Issue Advances in Detonative Propulsion (2nd Edition))
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11 pages, 4024 KB  
Article
Launch Experiment of Microwave Rocket Equipped with Six-Staged Reed Valve Air-Breathing System
by Kosuke Irie, Ayuto Manabe, Tomonori Nakatani, Tatsuki Kinoshita, Toshinobu Nomura, Matthias Weiand, Kimiya Komurasaki, Takahiro Shinya, Ryosuke Ikeda, Keito Ishita, Taku Nakai, Ken Kajiwara and Yasuhisa Oda
Aerospace 2025, 12(7), 577; https://doi.org/10.3390/aerospace12070577 - 25 Jun 2025
Cited by 2 | Viewed by 1310
Abstract
Millimeter-wave-supported detonation (MSD) is a unique detonation phenomenon driven by a supersonically propagating ionization front, sustained by intense millimeter-wave beams. Microwave Rocket, which utilizes MSD to generate thrust from atmospheric air in a pulse detonation engine (PDE) cycle, is a promising low-cost alternative [...] Read more.
Millimeter-wave-supported detonation (MSD) is a unique detonation phenomenon driven by a supersonically propagating ionization front, sustained by intense millimeter-wave beams. Microwave Rocket, which utilizes MSD to generate thrust from atmospheric air in a pulse detonation engine (PDE) cycle, is a promising low-cost alternative to conventional chemical propulsion systems for space transportation. However, insufficient air intake during repetitive PDE cycles has limited achievable thrust performance. To address this issue, a model equipped with a six-stage reed valve system (36 valves in total) was developed to ensure sufficient air intake, which measured 500 mm in length, 28 mm in radius, and 539 g in weight. Launch demonstration experiments were conducted using a 170 GHz, 550 kW gyrotron developed at the National Institutes for Quantum Science and Technology (QST). Continuous thrust was successfully generated by irradiating up to 50 pulses per experiment at each frequency between 75 and 150 Hz, in 25 Hz increments, corresponding duty cycles ranging from 0.09 to 0.18. A maximum thrust of 9.56 N and a momentum coupling coefficient Cm of 116 N/MW were obtained. These values represent a fourfold increase compared to previous launch experiments without reed valves, thereby demonstrating the effectiveness of the reed valve configuration in enhancing thrust performance. Full article
(This article belongs to the Special Issue Advances in Detonative Propulsion (2nd Edition))
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17 pages, 1620 KB  
Article
Multi-Objective Optimization of Rocket-Type Pulse Detonation Engine Nozzles
by Alberto Gonzalez-Viana, Francisco Sastre, Elena Martin and Angel Velazquez
Aerospace 2025, 12(6), 502; https://doi.org/10.3390/aerospace12060502 - 1 Jun 2025
Cited by 1 | Viewed by 3211
Abstract
This numerical study addressed the multi-objective optimization of a rocket-type Pulse Detonation Engine nozzle. The Pulse Detonation Engine consisted of a constant length, constant diameter cylindrical section plus a nozzle that could be either convergent, divergent, or convergent–divergent. The space of five design [...] Read more.
This numerical study addressed the multi-objective optimization of a rocket-type Pulse Detonation Engine nozzle. The Pulse Detonation Engine consisted of a constant length, constant diameter cylindrical section plus a nozzle that could be either convergent, divergent, or convergent–divergent. The space of five design variables contained: equivalence ratio of the H2-Air mixture, convergent contraction ratio, divergent expansion ratio, dimensionless nozzle length, and convergent to divergent length ratio. The unsteady Euler-type numerical solver was quasi-one-dimensional with variable cross-sectional area. Chemistry was simulated by means of a one-step global reaction. The solver was used to generate three coarse five-dimensional data tensors that contained: specific impulse based on fuel, total impulse, and nozzle surface area, for each configuration. The tensors were decomposed using the High Order singular Value Decomposition technique. The eigenvectors of the decompositions were used to generate continuous descriptions of the data tensors. A genetic algorithm plus a Gradient Method optimization algorithm acted on the densified data tensors. Five different objective functions were considered that involved specific impulse based on fuel, total impulse, and nozzle surface area either separately or in doublets/triplets. The results obtained were discussed, both qualitatively and quantitatively, in terms of the different objective functions. Design guidelines were provided that could be of interest in the growing area of Pulse Detonation Engine engineering applications. Full article
(This article belongs to the Special Issue Advances in Detonative Propulsion (2nd Edition))
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21 pages, 5057 KB  
Article
Reduced-Order Model for Performance Simulation and Conceptual Design of Rocket-Type Pulse Detonation Engines
by Luis Sánchez de León, Francisco Sastre, Elena Martin and Angel Velazquez
Aerospace 2025, 12(2), 132; https://doi.org/10.3390/aerospace12020132 - 10 Feb 2025
Cited by 2 | Viewed by 3082
Abstract
A model-based method has been developed for the performance simulation and conceptual design of rocket-type pulse detonation engines (PDEs). A reduced-order model (ROM) has been generated based on the high order singular value decomposition of a data tensor obtained from CFD computations. This [...] Read more.
A model-based method has been developed for the performance simulation and conceptual design of rocket-type pulse detonation engines (PDEs). A reduced-order model (ROM) has been generated based on the high order singular value decomposition of a data tensor obtained from CFD computations. This ROM could be used to solve the direct (performance) and inverse (design) problems in the context of the early phases of pulse detonation engine design. Output performance parameters are predicted from prescribed input operation/geometry parameters in the direct problem, and vice versa in the inverse problem. The focus of this method is industrial application in situations where large parametric searches are to be performed with a reasonable level of fidelity at a low computational cost. It was found that the performance and conceptual design tool thus developed provides results that deviate, on average, by less than 10% from the CFD results. Regarding practical implementation, the method allows for shifting the heavier computational load off-line. In this way, when working on-line, the user can obtain results in less than a second for every single case. The main contribution of this study is showing that a model-based approach that combines CFD and tensor decomposition has the potential to extract a maximum of information from a given computational effort. This characteristic makes the method of interest for early design phases in the aerospace industry. Full article
(This article belongs to the Special Issue Advances in Detonative Propulsion (2nd Edition))
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