Results 221 to 230 of about 4,526 (269)

Numerical Investigation of Rotating Detonation Engines

46th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2010
Rotating detonation engines (RDE’s) represent an alternative to the extensively studied pulse detonation engines (PDE’s) for obtaining propulsion from the high efficiency detonation cycle. Since it has received considerably less attention, the general flow-field and effect of parameters such as stagnation conditions, combustion chamber length, and fuel
Douglas Schwer, Kailas Kailasanath
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PRESSURE MEASUREMENTS IN ROTATING DETONATION ENGINES

Detonation: Latest accomplishments, 2020
The influence of waveguide tubes on the signals received by remote pressure sensors measuring pressure histories in pulsed detonation engines (PDE) and rotating detonation engines (RDE) is studied computationally. Two types of pressure sensors are considered: low-frequency static pressure sensors and high-frequency sensors of pressure pulsations. Three
V. S. IVANOV, S. S. SERGEEV, S. M. FROLOV, YU. M. MIRONOV, A. E. NOVIKOV, I. I. SCHULZ   +5 more
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Rocket rotating detonation engine flight demonstrator

Aircraft Engineering and Aerospace Technology, 2016
Purpose Today’s modern liquid propellant rocket engines have a very complicated structure. They cannot be arbitrarily downsized, ensuring efficient propellants’ mixing and combustion. Moreover, the thermodynamic cycle’s efficiency is relatively low.
Adam Okninski, Jan Kindracki, Piotr Wolanski   +2 more
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Carbon-Based Multi-Phase Rotating Detonation Engine

Journal of Energy Resources Technology, 2021
Abstract This article focuses on extending an H2/air rotating detonation engine's detonability limits by introducing solid carbon particles into the combustor. Carbon black particles consisting of 1% volatility and a carbon concentration of 99% were used as a solid-phase mixing agent for enhanced reaction wave dynamics.
Ian Dunn, Wilmer Flores, Anthony Morales, Vidhan Malik, Kareem Ahmed   +4 more
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Fundamental Study of Detonation Structure in Rotating Detonation Engine

2020
The maturation of Brayton-cycle engines has led to a plateau in combustor performance where improvements between successive generations are slight. Detonation-based heat addition, in place of deflagrations, may offer an opportunity to radically improve the performance of both air-breathing and rocket systems.
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Numerical investigation on detonation velocity in rotating detonation engine chamber

Proceedings of the Combustion Institute, 2017
Abstract A two-dimensional investigation is conducted to clarify the velocity decrease mechanism of a detonation wave propagating within a rotating detonation engine (RDE) chamber, focusing on the effect of injection conditions of the fuel and oxidizer.
Jumpei Fujii, Yoshiki Kumazawa, Akiko Matsuo, Soma Nakagami, Ken Matsuoka, Jiro Kasahara   +5 more
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Area Effects on Rotating Detonation Engine Performance

50th AIAA/ASME/SAE/ASEE Joint Propulsion Conference, 2014
Prior work shows that the thermodynamic cycle of the rotating detonation engine can be analyzed as a ZND planar detonation that is transformed into a rotating frame of reference. The resulting cycle model is independent of geometry and consistent with the Euler turbomachinery equation.
Craig A. Nordeen, Douglas A. Schwer, Andrew T. Corrigan   +2 more
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Spinning pulsed detonation in rotating detonation engine

Aerospace Science and Technology, 2022
Dawen Shen, John Z. Ma, Zhaohua Sheng, Guangyao Rong, Kevin Wu, Yunzhen Zhang, Jianping Wang   +6 more
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Flowfield Characterization of a Rotating Detonation Engine

51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition, 2013
A rotating detonation engine (RDE) at the Air Force Research Lab (AFRL) has been modified to allow optical access to the annulus while in operation. High speed video of chemiluminescence was taken for three operating conditions to characterize the RDE flowfield.
Andrew Naples, John Hoke, James Karnesky, Fred Schauer   +3 more
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Reactant Mixing Effects in Rotating Detonation Engines

2023
Rotating detonation engines (RDEs) represent a promising technology for achieving a step change improvement in the efficiency of gas turbine and rocket engines for propulsion and power generation applications. However, the complexity of the rotating detonation cycle presents a challenge for researchers and the effects of all the interdependent ...
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