Results 41 to 50 of about 32,505 (164)
Modeling and CFD Simulation of Regression Rate in Hybrid Rocket Motors
Fire, 2023 As the research on hybrid rocket motors advances, more accurate tools are needed to estimate the performance of the system by determining its fundamental parameters. One of them is certainly the regression rate of the solid fuel.
Alessandro Rampazzo, Francesco Barato
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Aerospace, 2023 Firing test campaigns were carried out on a 200 N thrust-class hybrid rocket engine, using gaseous oxygen as an oxidizer and a paraffin-wax-based fuel.
Daniele Cardillo +4 more
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Optimization design in single wagon-wheel fuel grain of hybrid rocket motor
FirePhysChem, 2021 The grain design of hybrid rocket motor is a design of proper fuel grain geometry and flow adjustment scheme based on the total impulse, thrust, chamber pressure, length and outer diameter of combustion chamber.
Wei Tianfang +5 more
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Modified Regression Rate Formula of PMMA Combustion by a Single Plane Impinging Jet
International Journal of Aerospace Engineering, 2017 A modified regression rate formula for the uppermost stage of CAMUI-type hybrid rocket motor is proposed in this study. Assuming a quasi-steady, one-dimensional, an energy balance against a control volume near the fuel surface is considered. Accordingly,
Tsuneyoshi Matsuoka +3 more
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Modeling of High Density Polyethylene Regression Rate in the Simulation of Hybrid Rocket Flowfields
Aerospace, 2019 Numerical analysis of hybrid rocket internal ballistics is carried out with a Reynolds-averaged Navier−Stokes solver integrated with a customized gas−surface interaction wall boundary condition and coupled with a radiation code based on the ...
Daniele Bianchi +4 more
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Characterization and manufacturing of a paraffin wax as fuel for hybrid rockets
Propulsion and Power Research, 2018 The hybrid propulsion performed with paraffin waxes exhibits most attractive capabilities compared to solid or liquid engines, e.g., throttleability and re-ignition, alongside higher regression rates compared to the conventional hydroxyl terminated ...
F. Piscitelli +4 more
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Optimization and Experimental Approaches to the Direct Methanol Fuel Cell Stack Using a Response Surface Methodology [PDF]
Journal of Renewable Energy and Environment, 2019 The power density of a direct methanol fuel cell (DMFC) stack as a function of temperature, methanol concentration, oxygen flow rate, and methanol flow rate was studied using a response surface methodology (RSM) to maximize the power density.
Shima Sharifi +3 more
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Theoretical Investigation on Feedback Control of Hybrid Rocket Engines
Aerospace, 2019 Despite the fact that hybrid propulsion offers significant benefits, it still suffers from some limitations such as the natural oxidizer to fuel ratio shift which induces variations of the engines’ performances while operating.
Jérôme Messineo, Toru Shimada
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One-Dimensional simulation of internal ballistic of a Hybrid Rocket Engine [PDF]
علوم، فناوری و کاربردهای فضاییA one-dimensional code was developed to simulate the performance of hybrid rocket engines. In this code, the conservation equations of mass, momentum and energy are solved in one-dimensional and inviscid form.
Hadi Rezaei
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AerospaceThis study investigated combustion characteristics of composite fuel grains designed based on a modular fuel unit strategy. The modular fuel unit comprised a periodical helical structure with nine acrylonitrile–butadiene–styrene helical blades.
Junjie Pan +6 more
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