High temperature ignition is essential to the ignition and combustion of energetic metal fuels including the aluminum and magnesium particles protected by their oxides of high melting temperature. A plasma torch characterized by ultrahigh-temperature plasma plume fulfills such high-temperature ignition condition. A steam plasma igniter is newly designed and successfully validated with aluminum power ignition and combustion tests. The steam plasma rapidly stabilizes in both plasma and steam jet mode. Parametric investigation of the steam plasma jet is conducted in terms of the arc strength. A high-speed camera and oscilloscope method visualizes the discharge characteristics, and optical emission spectroscopy measures thermochemical properties of the plasma jet. Diatomic molecule OH fitting method, Boltzmann plot method, and short exposure capturing with an intensified charge coupled device record the axial distributions of the rotational gas temperature, excitation temperature, and OH radical distribution, respectively. The excitation temperature at the nozzle tip occurs near 5500 K, and the gas temperature 5400 K.
|Title of host publication||50th AIAA/ASME/SAE/ASEE Joint Propulsion Conference 2014|
|Publisher||American Institute of Aeronautics and Astronautics Inc.|
|Publication status||Published - 2014|
|Event||50th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and exhibit 2014 - Cleveland, United States|
Duration: 2014 Jul 28 → 2014 Jul 30
|Name||50th AIAA/ASME/SAE/ASEE Joint Propulsion Conference 2014|
|Other||50th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and exhibit 2014|
|Period||14/7/28 → 14/7/30|
Bibliographical noteFunding Information:
This work was supported by Defense Acquisition Program Administration and Agency for Development under the contract UD110095CD.
© 2014 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.
All Science Journal Classification (ASJC) codes
- Energy Engineering and Power Technology
- Aerospace Engineering
- Control and Systems Engineering
- Electrical and Electronic Engineering
- Mechanical Engineering