Abstract
The introduction of a cavity flameholder into solid fuel ramjet fuel grains was investigated in the context of improving flammability and performance. Introducing cavity flameholders demonstrated increased fuel loading with sustained combustion in previously unfavorable geometries. Volumetric fuel loading improvements of up to 26% were demonstrated to sustain combustion. The acoustic response of a combustor containing such a fuel geometry was investigated. Analysis revealed that decreasing the length of a cavity beyond a critical value (believed to be the transition between open and closed cavity flow) led to increased organization of the fluctuating pressure component into distinct frequencies. Regression patterns of cavity fuel grains are presented and show the effect of introducing a cavity is to change the location of maximum regression and the reattachment point. The addition of a cavity flameholder does not appear to have a significant effect on combustion efficiency. However, it is noteworthy that longer cavities increased chamber pressure above what was seen for a center-perforated fuel grains as a result of the increased mass addition and higher equivalence ratio associated with the higher regression rate.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
