Results 31 to 40 of about 1,469,729 (346)

A Review on Flame Stabilization Technologies for UAV Engine Micro-Meso Scale Combustors: Progress and Challenges

open access: yesEnergies, 2023
Unmanned aerial vehicles (UAV)s have unique requirements that demand engines with high power-to-weight ratios, fuel efficiency, and reliability. As such, combustion engines used in UAVs are specialized to meet these requirements.
Gurunadh Velidi, Chun Sang Yoo
doaj   +1 more source

Study on the Effect of Air Throttling on Flame Stabilization of an Ethylene Fueled Scramjet Combustor

open access: yesInternational Journal of Aerospace Engineering, 2015
The effect of air throttling on flame stabilization of an ethylene fueled scramjet combustor was investigated by numerical simulation and experiments in this paper.
Ye Tian, Shunhua Yang, Jialing Le
doaj   +1 more source

A mechanism for high-frequency oscillation in ramjet combustors and afterburners [PDF]

open access: yes, 1956
An experimental investigation was made of the behavior of a small two-dimensional combustion chamber, burning a uniform mixture of air and fuel vapor under conditions of high-frequency oscillation or screech.
Marble, Frank E., Rogers, Don E.
core   +1 more source

A Comparison of the Characteristics of Planar and Axisymmetric Bluff-Body Combustors Operated under Stratified Inlet Mixture Conditions

open access: yesJournal of Combustion, 2013
The work presents comparisons of the flame stabilization characteristics of axisymmetric disk and 2D slender bluff-body burner configurations, operating with inlet mixture stratification, under ultralean conditions.
G. Paterakis   +3 more
doaj   +1 more source

Stability and Liftoff of a N2-in-H2 Jet Flame in a Vitiated Co-flow at Atmospheric Pressure

open access: yesEurasian Chemico-Technological Journal, 2014
The stability and liftoff characteristics of a nitrogen (N2) diluted hydrogen (H2) jet flame in a vitiated co-flow are investigated experimentally with particular attention focused on regimes where multiple stabilization mechanisms are active ...
A. A. North   +4 more
doaj   +1 more source

A Pressurized Vitiated Co-Flow Burner and Its Preliminary Application for a Methane Lifted Flame

open access: yesEnergies, 2018
A new pressurized vitiated co-flow burner (PVCB) was designed and built for the investigation of lifted flame properties and was supported by a vitiated co-flow of hot combustion products from a lean H2/air flame at a controllable pressure; its ...
Qiushi Qin   +5 more
doaj   +1 more source

The Cellular Burning Regime in Type Ia Supernova Explosions - I. Flame Propagation into Quiescent Fuel

open access: yes, 2003
We present a numerical investigation of the cellular burning regime in Type Ia supernova explosions. This regime holds at small scales (i.e. below the Gibson scale), which are unresolved in large-scale Type Ia supernova simulations.
Hillebrandt, W.   +2 more
core   +2 more sources

Experimental Investigation of Flameholding in Scramjet Combustor by Pylon with Plasma Actuator Based on Q-DC Discharge

open access: yesAerospace, 2023
This paper presents the results of testing and optimization of a plasma-assisted combustion scheme based on a pylon for fuel injection equipped with a plasma actuator.
Aleksandr A. Firsov
doaj   +1 more source

Computational realization of multiple flame stabilization modes in DLR strut-injection hydrogen supersonic combustor

open access: yesProceedings of the Combustion Institute, 2019
Inspired by the existence of multiple flame stabilization modes in cavity-assisted supersonic combustor, multiple flame stabilization modes of DLR hydrogen-fueled strut injection supersonic combustor were numerically realized and analyzed for a wide ...
Kun Wu, Peng Zhang, W. Yao, Xuejun Fan
semanticscholar   +1 more source

Combustion Characteristics of a Supersonic Combustor with a Large Cavity Length-to-Depth Ratio

open access: yesAerospace, 2022
The combustion characteristics of a hydrogen-fueled supersonic combustor featuring a large cavity length-to-depth ratio (i.e., 11) were examined by performing experimental trials while varying the fuel injector positions and equivalence ratios.
Xiang Li   +7 more
doaj   +1 more source

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