Ignition Characteristics of a Liquid-Kerosene-Fueled Scramjet during Air Throttling Combined with a Gas Generator
Publication: Journal of Aerospace Engineering
Volume 27, Issue 5
Abstract
The ignition characteristics of a flush wall, liquid-kerosene-fueled scramjet combustor are tested in a directly connected ground test rig. The total temperature and Mach number of the vitiated airflow at the exit of the nozzle are 1,505 K and 3.0, respectively. The ignition process is accomplished by air throttling and a micro hot gas generator (MHGG). Without any cavity or backward steps, the flame holding is also accomplished by the MHGG. By controlling the air-throttling pressure and overlap time of the air throttling and the MHGG, different ignition results can be achieved. This paper divides these different results into four ignition modes and provides a detailed description of the characteristics of each mode. In addition, this paper summarizes the experiment data and proves that the ignition laws have some relationship to the fuel–air equivalence ratio.
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Acknowledgments
This work is supported by the National Natural Science Foundation of China (Grant No. 90816028), National Science Fund for Distinguished Young Scholars of China (Grant No. 50925625), and the Foundation for Innovative Research Groups of the National Natural Science Foundation of China (Grant No. 51121004).
References
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Information
Published In
Journal of Aerospace Engineering
Volume 27 • Issue 5 • September 2014
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Jul 5, 2012
Accepted: Dec 28, 2012
Published online: Jan 2, 2013
Published in print: Sep 1, 2014
Discussion open until: Sep 21, 2014
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