Results 21 to 30 of about 10,628 (280)

Experimental Proof of Concept of a Noncircular Rotating Detonation Engine (RDE) for Propulsion Applications

open access: yesAerospace, 2022
A noncircular engine cross-section could provide great flexibility in the integration of propulsion into the airframe. In this work, a tri-arc RDE was constructed and tested as an example of noncircular cross-sectioned RDE.
Jae-Hyuk Lee   +4 more
doaj   +1 more source

Detonation propagation from a cylindrical tube into a diverging cone

open access: yesJournal of Thermal Science and Technology, 2020
The characteristics of the propagation of a detonation from a cylindrical tube of constant cross section into a diverging cone were experimentally investigated using the smoked-foil technique for three explosive gas mixtures: C2H2+2.5O2, 2H2+O2+4.5Ar ...
Takuma ENDO   +5 more
doaj   +1 more source

Effect of Combustor Outlet Geometry on Operating Characteristics of Disk-Shaped Rotating Detonation Engine

open access: yesAerospace, 2023
A disk-shaped rotating detonation engine with H2/air mixture was tested to identify the impact of combustor outlet geometry on the engine’s operating characteristics.
Zhenjuan Xia   +4 more
doaj   +1 more source

Experimental Study on the Propagation Characteristics of Rotating Detonation Wave with Rich Combustion Gas in Solid Ram Engine [PDF]

open access: yesHangkong bingqi
In order to study the rotational detonation characteristics of rich combustion gas in solid ramjet engines, this paper replaces solid rich combustion gas with CH4/CO/H2 mixture as fuel and uses ambient temperature air as oxidant to investigate the ...
Weng Chunsheng, Han Jiaxiang, Bai Qiaodong, Liu Zhuyong, Zheng Quan
doaj   +1 more source

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

Numerical Study on the Two-Phase Detonation Flow Field of Coal Powder-Hydrogen in a Rotating Detonation Engine [PDF]

open access: yesHangkong bingqi
Rotating detonation engines (RDEs) have attracted significant attention in the aerospace field due to their high thermal cycle efficiency. This study explores the characteristics of rotating detonation in gas-solid mixed fuel within an air atmosphere.
Weng Chunsheng, Ni Xiaodong, Xu Han
doaj   +1 more source

Preliminary study on the explosive performance of coal dust and prospects for engineering applications. [PDF]

open access: yesSci Rep
This study aims to evaluate the efficiency and energy release characteristics of different types of coal in pulse detonation engines (PDE) to advance the development of deep coal fluidization detonation technology, achieving more efficient and cleaner ...
Guo J, Ge S.
europepmc   +2 more sources

Mathematical Modeling of the Hydrodynamic Instability and Chemical Inhibition of Detonation Waves in a Syngas–Air Mixture

open access: yesMathematics, 2023
This paper presents the results of the two-dimensional modeling of the hydrodynamic instability of a detonation wave, which results in the formation of an oscillating cellular structure on the wave front. This cellular structure of the wave, unstable due
Valeriy Nikitin   +4 more
doaj   +1 more source

Detonation wave propagation in micro-scale groove charges

open access: yesAIP Advances, 2019
The detonation wave propagation characteristics in micro-scale groove charges are very important for optimizing the structure of the Micro-Electro-Mechanics System explosive train and improving its detonation reliability.
Rongqiang Liu   +4 more
doaj   +1 more source

Dissipation and detonation of shock waves in lipid monolayers

open access: yes, 2018
Lipid interfaces not only compartmentalize but also connect different reaction centers within a cell architecture. These interfaces have well defined specific heats and compressibilities, hence energy can propagate along them analogous to sound waves ...
Shrivastava, Shamit
core   +1 more source

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