Aerodynamics of Lean Blowout in a Premixed Dual-Mode Scramjet

摘要

CRITICAL to a definition of the range of flight conditions over which a dual-mode scramjet can operate is an understanding of the operability limits of the engine as well as its behavior when these limits are approached and crossed. A number of investigators have established rich and lean blowout limits for hydrocarbon-fueled configurations, but the literature lacks detailed investigation of the blowout process. Additionally, most studies have addressed the non- or partially premixed regimes, where mean flame structure is dependent on the location and orientation of fuel injectors. In contrast, Cantu et al. found no such dependency in the premixed regime.