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.
Ignition Characteristics of a Liquid-Kerosene-Fueled Scramjet during Air Throttling Combined with a Gas Generator
Journal of Aerospace Engineering ; 27 , 5
2013-01-02
Article (Journal)
Electronic Resource
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