PREDICTING LAMINAR-TURBULENT TRANSITION MOVEMENT ON THE SIDE SURFACES OF RE-ENTRY VEHICLES
V. G. Degtyar’1, S. T. Kalashnikov2, G. F. Kostin2, E. N. Fedorova1, V. I. Khlybov1,2
1Makeyev Rocket Design Bureau, Miass, Russia
2South Ural Federal Scientific Center for Mineralogy and Geoecology, Ural Branch of the Russian Academy of Sciences, Miass, Russia
Keywords: re-entry vehicle, surface roughness, laminar-turbulent transition
Abstract
This paper presents a method for predicting the movement of the laminar-turbulent transition front on the side surfaces of spherically blunted circular cones with account for surface roughness effects. The study demonstrates that mass ablation of the composite thermal protection systems on re-entry vehicles induces surface roughness along the flight trajectory. This roughness arises from differential ablation rates between the constituents of the material, such as fillers and binders, reinforcing frame elements, and the carbon matrix.
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