Performance of an sfrj with an aft-mixing section utilizing bypass air. Evans, J. V., Senior, W. C., Gejji, R. M., Strahan, N. L., & Slabaugh, C. D. In pages 1–10, 2021. AIAA Paper 2021-1876.
Performance of an sfrj with an aft-mixing section utilizing bypass air [link]Paper  doi  abstract   bibtex   
The effect of secondary injection of air downstream of the combustor of a model solid-fuel ramjet (SFRJ) combustor on its global performance is studied. The SFRJ is operated with heated non-vitiated air (2 = 387-727 °F, = 2.31-3.81 lbm/s) and cylindrical, center-perforated HTPB fuel grains. The secondary air bypass ratio is varied from 0-30%. For comparable operating conditions, the use of the aft-mixing section (AMS) resulted in an improvement in combustion efficiency from ∼85% to ∼95% and increase in from ∼110 s to ∼130 s. The bypass air was introduced into the AMS using circumferential jet injection at momentum flux ratios of 3-3.5 and 20. For comparable operating conditions, the = 20 cases had a slightly lower combustion efficiency than the = 3-3.5 cases. The jet trajectory and heat-release in the AMS were characterized using broadband chemiluminescence performed at 6 kHz and CH* chemiluminescence performed at 50 kHz.
@inproceedings{evans2021,
	title = {Performance of an sfrj with an aft-mixing section utilizing bypass air},
	isbn = {978-1-62410-609-5},
	url = {https://arc.aiaa.org/doi/10.2514/6.2021-1876},
	doi = {10.2514/6.2021-1876},
	abstract = {The effect of secondary injection of air downstream of the combustor of a model solid-fuel ramjet (SFRJ) combustor on its global performance is studied. The SFRJ is operated with heated non-vitiated air (2 = 387-727 °F, = 2.31-3.81 lbm/s) and cylindrical, center-perforated HTPB fuel grains. The secondary air bypass ratio is varied from 0-30\%. For comparable operating conditions, the use of the aft-mixing section (AMS) resulted in an improvement in combustion efficiency from ∼85\% to ∼95\% and increase in from ∼110 s to ∼130 s. The bypass air was introduced into the AMS using circumferential jet injection at momentum flux ratios of 3-3.5 and 20. For comparable operating conditions, the = 20 cases had a slightly lower combustion efficiency than the = 3-3.5 cases. The jet trajectory and heat-release in the AMS were characterized using broadband chemiluminescence performed at 6 kHz and CH* chemiluminescence performed at 50 kHz.},
	publisher = {AIAA Paper 2021-1876},
	author = {Evans, Jay V. and Senior, William C.B. and Gejji, Rohan M. and Strahan, Nicholas L. and Slabaugh, Carson D.},
	year = {2021},
	pages = {1--10},
}

Downloads: 0