Results 11 to 20 of about 32,505 (164)

Estimation of Real-World Fuel Consumption Rate of Light-Duty Vehicles Based on the Records Reported by Vehicle Owners

open access: yesEnergies, 2021
Private vehicle travel is the most basic mode of transportation, so that an effective way to control the real-world fuel consumption rate of light-duty vehicles plays a vital role in promoting sustainable economic growth as well as achieving a green low ...
Isabella Yunfei Zeng   +5 more
doaj   +1 more source

Solid-Fuel Regression Rate for Standard-Flow Hybrid Rocket Motors

open access: yesJournal of Thermal Science and Technology, 2012
Marxman's diffusion-limited analysis of hybrid rocket combustion has been often used to investigate various combustion problems in hybrid rocket motors.
Takakazu MORITA   +3 more
doaj   +1 more source

Viscosity and Regression Rate of Liquefying Hybrid Rocket Fuels

open access: yesJournal of Propulsion and Power, 2017
The combustion behavior of paraffin-based hybrid rocket fuels with gaseous oxygen as an oxidizer has been analyzed in detail. Regression rate tests have been done in a two-dimensional radial microburner at the DLR, German Aerospace Center and at the Space Propulsion Laboratory.
Kobald, Mario   +5 more
openaire   +3 more sources

Solid-Fuel Regression Rate Modeling for Hybrid Rockets

open access: yesJournal of Propulsion and Power, 2013
The regression rate of the solid fuel is a primary parameter in the performance analysis for a hybrid rocket. Many studies in the past few years have theoretically claimed, or experimentally shown, a dependence of the regression rate on the chamber total pressure. Such behavior is generally traced back to the presence of oxygen below the flame zone and
Favaro, Francesca   +3 more
openaire   +5 more sources

Fuel regression behavior of swirling-injection end-burning hybrid rocket engine

open access: yesJournal of Fluid Science and Technology, 2019
Burning experiments were conducted to better understand the fuel regression behavior in a swirling-injection end-burning hybrid rocket engine using paraffin wax/gaseous oxygen propellant.
Takashi SAKURAI   +2 more
doaj   +1 more source

Combustion Characteristics of a Swirl-Radial-Injection Composite Fuel Grain with Applications in Hybrid Rockets

open access: yesAerospace, 2023
The combustion characteristics of a swirl-radial-injection composite fuel grain were experimentally and numerically investigated. This composite grain permits swirl-radial oxidizer injection based on three hollow helical blades, each having a constant ...
Ruoyan Wang   +7 more
doaj   +1 more source

Visualization and Emission Spectra of Flames in Combustion Chamber of Swirling-Oxidizer-Flow-Type Hybrid Rocket Engines

open access: yesJournal of Thermal Science and Technology, 2011
In order to clarify flame behavior in the combustion chamber of swirling-oxidizer-flow-type hybrid rocket engines, a small hybrid rocket engine with a large quartz glass window was fabricated to observe the inside of the combustion chamber from the front
Saburo YUASA   +5 more
doaj   +1 more source

Experimental Investigation on Combustion Characteristics of Hybrid Rocket Fuels with Multi-Angle Diverging Injector

open access: yesInternational Journal of Turbomachinery, Propulsion and Power, 2020
Injection pattern of the oxidizer injected into the combustion chamber is a significant factor in evaluating the performance of a hybrid rocket. In the hybrid rocket combustion process, oxidizer flows over the solid fuel grain surface, leading to a ...
Pragya Berwal, Shelly Biswas
doaj   +1 more source

On the liquid layer instability process in hybrid rocket fuels

open access: yesFirePhysChem, 2021
This work is focused on the study of the combustion mechanism of a class of fast-burning fuels, the so-called liquefying fuels, in hybrid rocket engines.
Anna Petrarolo, Mario Kobald
doaj   +1 more source

The Application of Computational Thermo-Fluid-Dynamics to the Simulation of Hybrid Rocket Internal Ballistics with Classical or Liquefying Fuels: A Review

open access: yesAerospace, 2019
The computational fluid dynamics of hybrid rocket internal ballistics is becoming a key tool for reducing the engine operation uncertainties and development cost as well as for improving experimental data analysis.
Giuseppe Daniele Di Martino   +3 more
doaj   +1 more source

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