Laminar-turbulent boundary-layer transition on a flared cone at Mach 6: Compressibility has a stabilizing effect, as a result the transitional regime is considerably stretched in the downstream direction. The transitional regime can be particularly dangerous for vehicle safety and integrity since locally very large skin-friction and heat transfer values can be reached, far exceeding those of a turbulent boundary layer. The artwork above was inspired by an attempt to visualize the various stages of laminar-boundary layer transition for a flared cone at Mach 6 and also to demonstrate how long the transitional regime is in this flow. The structures visualized above also display characteristic structures for a so-called fundamental breakdown (Lambda vortices and hairpin vortices, closeup in the lower right-hand corner). Contributors: Christoph Hader, Hermann F. Fasel