Results 21 to 30 of about 4,526 (269)

Effects of Ozone Addition on Multi-Wave Modes of Hydrogen–Air Rotating Detonations

open access: yesAerospace, 2023
Ozone addition presents a promising approach for optimizing and regulating both combustion and ignition mechanisms. In Rotating Detonation Engines (RDEs), investigating the impact of ozone addition is particularly important due to the fact of their ...
Yang Wang, Cheng Tian, Pengfei Yang
doaj   +1 more source

Oblique detonation waves stabilized in rectangular-cross-section bent tubes [PDF]

open access: yes, 2011
Oblique detonation waves, which are generated by a fundamental detonation phenomenon occurring in bent tubes, may be applied to fuel combustion in high-efficiency engines such as a pulse detonation engine (PDE) and a rotating detonation engine (RDE). The
Kasahara Jiro   +5 more
core   +1 more source

Experimental study on the rotating detonation engine based on a gas mixture

open access: yesFrontiers in Energy Research, 2023
A direct connection test of a rotating detonation engine was conducted. The outer and inner diameters of the annular combustors were 206 and 166 mm, respectively.
Sainan Xue   +5 more
doaj   +1 more source

Propulsive Performance and Heating Environment of Rotating Detonation Engine with Various Nozzles [PDF]

open access: yes, 2019
Geometric throats are commonly applied to rocket combustors to increase pressure and specific impulse. This paper presents the results from thrust measurements of an ethylene/gas-oxygen rotating detonation engine with various throat geometries in a ...
FUNAKI Ikkoh   +9 more
core   +2 more sources

Deflagration-to-Detonation Transition in a Semi-Confined Slit Combustor Filled with Nitrogen Diluted Ethylene-Oxygen Mixture

open access: yesEnergies, 2023
The conditions for the mild initiation of the detonation of homogeneous stoichiometric ethylene-oxygen mixtures diluted with nitrogen up to ~40%vol.
Igor O. Shamshin   +4 more
doaj   +1 more source

Design and Study of Swirl Injector of Pulse Detonation Engine [PDF]

open access: yes, 2017
Future Indian Air force and Navy Capabilities indicate the need for a supersonic cruise missile. Therefore, there exists a need for a low cost, light-weight, and efficient means of supersonic propulsion. In this paper my main emphasis on Pulse Detonation
Banga, N. (Navdeep), Kanika, K. (Kanika)
core   +1 more source

Propagation of gaseous detonation waves in a spatially inhomogeneous reactive medium [PDF]

open access: yes, 2017
Detonation propagation in a compressible medium wherein the energy release has been made spatially inhomogeneous is examined via numerical simulation. The inhomogeneity is introduced via step functions in the reaction progress variable, with the local ...
Higgins, Andrew J.   +4 more
core   +2 more sources

Effects of Inlet Condition Variations on the Operating Modes of Rotating Detonation Engines

open access: yes气体物理, 2023
In this study, the operating modes of the rotating detonation engine (RDE) under various inlet conditions were investigated numerically. It was shown that after the sudden reduction of the inlet total pressure, the resulting decrease of the mass flow ...
Song-bai YAO   +2 more
doaj   +1 more source

Experimental investigations of mixing characteristics in model rotating detonation engine geometries [PDF]

open access: yes, 2017
This work examines the mechanisms of reactant mixing in a model Rotating Detonation Engine (RDE) geometry. RDEs are emerging as one of the highest potential applications for achieving Pressure Gain Combustion (PGC). Reactant mixing has been identified as
Blümner, Richard   +3 more
core   +1 more source

Rotating detonation combustors for propulsion: Some fundamental, numerical and experimental aspects

open access: yesFrontiers in Aerospace Engineering, 2023
Propulsion systems based on the constant-pressure combustion process have reached maturity in terms of performance, which is close to its theoretical limit. Technological breakthroughs are needed to develop more efficient transportation systems that meet
Bruno Le Naour   +3 more
doaj   +1 more source

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