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Review Article Volume 10 Issue 4
Static regulation of base drag: a review
Ambareen Khan, Mohammad Nishat Akhtar, Sher Afghan Khan
Received: October 15, 2026 | Published: October 28, 2026
Citation: Khan A, Akhtar MN, Khan SA. Static regulation of base drag: a review. Aeron Aero Open Access J. 2026;10(4):194-199. DOI: 10.15406/aaoaj.2026.10.00268
Abstract
This review comprehensively examines the static regulation of base drag at high Mach numbers. A sudden growth in nozzle area causes flow separation and reattachment. This sudden increase splits the jet into a main jet and a separated region. When a cavity controls the flow, reattachment must occur within the cavity to influence the flow field. The findings confirm that the cavity helps only when the reattachment length is slightly larger than the cavity position. When the reattachment length is shorter than the cavity location or longer than the cavity placement, the cavity has no effect, and base pressure does not change with or without the cavity. Likewise, increasing the cavity aspect ratio may make the cavity effective. Cavity depth does not affect the cavity’s control effectiveness.
Keywords: aerospace vehicles, mach number, dynamic control
©2026 Khan, et al. This is an open access article distributed under the terms of the, which permits unrestricted use, distribution, and build upon your work non-commercially.