Results 271 to 280 of about 10,532,032 (323)
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The performance of steady detonation engines
41st Aerospace Sciences Meeting and Exhibit, 2003Propulsion systems driven by steady normal detonations are studied. The practical di‐culties associated with stabilizing a detonation wave are highlighted. The requirement on the freestream total enthalpy is considered in parallel with efiects such as condensation or auto-ignition of the fuel-air mixture and limitations associated with fuel sensitivity
Eric Wintenberger, Joseph Shepherd
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Performance optimization of pulse detonation engine
2017 First International Conference on Recent Advances in Aerospace Engineering (ICRAAE), 2017The Pulse Detonation Engine (PDE) is a future air vehicle propulsion system. PDE acts as a high efficient engine for supersonic propulsion due to its light weight. The thermodynamic efficiency of Pulse Detonation Engine has greater efficiency of 50 percentage than that of constant pressure cycles of Gas Turbine/Scramjets/ Ramjets which is of 35 ...
Ziaullah Sheriff +2 more
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Oblique detonation wave engine performance prediction
Journal of Propulsion and Power, 1995The performance of an oblique detonation wave engine (ODWE) is evaluated and compared to a diffusive scramjet engine. Diffusive scramjet performance is predicted for both constant area and constant pressure combustion. Detonation wave calculations that utilize a perfect gas approximation vs a real gas model indicate the inadequacy of a perfect gas ...
S Ashford, G Emanuel
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Performance prediction for oblique detonation wave engines (odwe)
Acta Astronautica, 2001Abstract The aim of this paper is to present a mathematical model to predict the overall performance of an oblique detonation wave engine (ODWE). The model of the propulsive system accounts for the four main components of a vehicle propelled by an ODWE, the air intake, a mixing device, the ODW-based combustor and a supersonic nozzle.
VALORANI, Mauro +2 more
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The Physics of Fluids
Film cooling is a promising thermal management solution for rotating detonation combustors (RDCs) maturing toward long-duration engineering implementation.
D. Shen +5 more
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Film cooling is a promising thermal management solution for rotating detonation combustors (RDCs) maturing toward long-duration engineering implementation.
D. Shen +5 more
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Theoretical studies of pentazole-based compounds with high detonation performance
Journal of Energetic Materials, 2019Four types of pentazole ring-based organic compounds, including triaminotripentazolobenzene (TATPB), triaminotripentazolocyclohexane (TATPH), trinitrotripentazolobenzene (TNTPB) and trinitrotripentazolocyclohexane (TNTPH) were designed and investigated ...
Weijing Zhang +5 more
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The Physics of Fluids
The initiation of oblique detonation waves (ODWs) is a key component of the successful application of oblique detonation wave engines (ODWEs). This paper numerically investigates the initiation of ODWs under the active control of a transverse jet by ...
Xin Han, Ruofan Qiu, Yancheng You
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The initiation of oblique detonation waves (ODWs) is a key component of the successful application of oblique detonation wave engines (ODWEs). This paper numerically investigates the initiation of ODWs under the active control of a transverse jet by ...
Xin Han, Ruofan Qiu, Yancheng You
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New Journal of Chemistry, 2019
Fluorine-containing explosives have potential applications in rocket propellant and explosive formulations because they produce a large number of products with a smaller molecular weight and high detonation performance when they are detonated.
Xingcheng Zhang +6 more
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Fluorine-containing explosives have potential applications in rocket propellant and explosive formulations because they produce a large number of products with a smaller molecular weight and high detonation performance when they are detonated.
Xingcheng Zhang +6 more
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Area Effects on Rotating Detonation Engine Performance
50th AIAA/ASME/SAE/ASEE Joint Propulsion Conference, 2014Prior 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 +2 more
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Performance analysis of pulse detonation ramjet
International Journal of Turbo & Jet-EnginesAbstract A Pulse Detonation Ramjet (PDR) performance evaluation model is established based on the component-based method. The influence law of working parameters of pulse detonation combustor (PDC), PDR geometry parameters, flight speed and altitude on the performance is analyzed. Results are as follows.
Zhenkun Luo +5 more
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