Plasma-assisted ignition for a kerosene fueled scramjet at Mach 1.8

By using a plasma jet (PJ) torch with 1.5 kW input power as an igniter, successful ignition for liquid-kerosene fueled combustion experiment was conducted in a direct-connected supersonic test facility. The incoming flow has total temperature of 950 K and local Mach number of 1.8, corresponding to Mach 4 flight condition. In this study, several optical techniques, including high speed photography, high speed schlieren photography, and planar laser scattering (PLS) technique, were combined to study the ignition process, flame propagation, and mixing features of liquid kerosene fuel with air around the cavity. The effect of fuel injection position, injection pressure, and feedstock gas on ignition performance has been analyzed. The results indicate that local mixing is a critical factor for ignition. It is also shown that the PJ torch with N-2 + H-2 feedstock is superior to the PJ torch with N-2 feedstock for the ignition of liquid-kerosene fuel. These results are valuable for the future optimization of kerosene-fueled scramjet engine when using a PJ torch as an igniter.

[1]  Sadatake Tomioka,et al.  Performance of a Dual-Mode Combustor with Multistaged Fuel Injection , 2006 .

[2]  V. Babu,et al.  Mixing and combustion characteristics of kerosene In a model supersonic combustor , 2009 .

[3]  J. Driscoll,et al.  Combustion characteristics of a dual-mode scramjet combustor with cavity flameholder , 2009 .

[4]  Campbell D. Carter,et al.  Stability limits of cavity-stabilized flames in supersonic flow , 2005 .

[5]  Lihong Chen,et al.  Experimental investigation on the cavity-based scramjet model , 2009 .

[6]  Goro Masuya,et al.  Ignition enhancement by addition of NO and NO2 from a N2/O2 plasma torch in a supersonic flow , 2007 .

[7]  T. Tachibana,et al.  Superiority of oxygen as feedstock for a plasma jet igniter in supersonic methane/air streams , 2002 .

[8]  Hyungrok Do,et al.  Plasma assisted cavity flame ignition in supersonic flows , 2010 .

[9]  Chih-Jen Sung,et al.  An Experimental Study of Kerosene Combustion in a Supersonic Model Combustor Using Effervescent Atomization , 2005 .

[10]  W. O'brien,et al.  Plasma Torch Atomizer-Igniter for Supersonic Combustion of Liquid Hydrocarbon Fuels , 2006 .

[11]  Yvette Zuzeek,et al.  Energy Coupling and Heat Release in Air and Ethylene-Air Nanosecond Pulse Discharge Plasmas , 2009 .

[12]  Goro Masuya,et al.  Ignition Characteristics of Plasma Torch for Hydrogen Jet in an Airstream , 2000 .

[13]  Koichi Murakami,et al.  A novel design of a plasma jet torch igniter in a scramjet combustor , 2005 .

[14]  C. Carter,et al.  Plasma-Assisted Ignition in Scramjets , 2008 .

[15]  W. O'brien,et al.  Integration of an Aeroramp Injector/Plasma Igniter for Hydrocarbon Scramjets , 2003 .

[16]  S. Kuo,et al.  A pulsed plasma torch and its performance in a Mach 2.5 supersonic flow , 2006, IEEE Transactions on Plasma Science.

[17]  Kenichi Takita,et al.  Ignition and flame-holding by oxygen, nitrogen and argon plasma torches in supersonic airflow , 2002 .

[18]  Y. Ju,et al.  Effect of addition of radicals on burning velocity , 2001 .

[19]  G. Masuya,et al.  Effects of Airstream Mach Number on H/N Plasma Igniter , 2002 .

[20]  Liu Ou-zi.  Experimental investigation of kerosene fuel combustion in the supersonic flow , 2005 .

[21]  Sadatake Tomioka,et al.  Supersonic Flow Ignition by Plasma Torch and H2/O2 Torch , 2004 .

[22]  Wang Zhenguo,et al.  Analysis of Internal Drag of Scramjet Engine with Multi-cavities in Tandem , 2010 .

[23]  K. Takita,et al.  Ignition in a supersonic flow by a plasma jet of mixed feedstock including CH4 , 2011 .

[24]  E. T. Curran,et al.  Scramjet Engines: The First Forty Years , 2001 .

[25]  K. Takita,et al.  Suitability of C2-, C3-Hydrocarbon Fuels for Plasma Ignition in High-Speed Flow , 2009 .

[26]  F. Mayinger,et al.  Supersonic Combustion of Kerosene/H2-Mixtures in a Model Scramjet Combustor , 1999 .

[27]  A. Napartovich,et al.  Plasma-Induced Ethylene Ignition and Flameholding in Confined Supersonic Air Flow at Low Temperatures , 2011, IEEE Transactions on Plasma Science.

[28]  Wang Zhenguo.  Application of control technology based on Venturi in kerosene fueled scramjet , 2005 .