This is just a very small part of the Starship reentry simulations I've performed. Wide range of conditions - different shield shapes, angle of attacks (AOA), velocities, atm. pressures and so on.

CONCLUSION - ALL THEY BURN TILES AND CRINGE STEEL !!!

THE TILES BASED SHIELD IS COMPLETELY DOOMED!!!

...what those people are thinking???




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Surface temperature plot of Starship /tile protection/ top and bottom part with very mild reentry conditions - only 5000m/s speed, AOA=70 degree and  atm. pressure only 10 Pascals. As it is seen the shield temperature well exceeds 3000K in about 40-50% of the surface.
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  After performing multiple flow reentry simulations with wide reentry conditions I have not other choice, but to conclude that using a tiles based shield is completely impossible. It would not be safe even for one reentry as the temperatures on the tiles surface of more than 50% of the shield area well exceeds 3000 K. At that point I am mildly said baffled, why this option was even considered. On the other hand I've proved without a doubt, that an internally cooled shield is the only viable solution. My simulations and calculations proved that 10kg/s to 15kg/s cooling methane would be enough to keep the shield temperature below 1400 K in the most heated areas. As well I've proved that expelling methane through holes in the shield is far worse than keeping the cold methane inside the shield "jacket" and expelling it through the upper part of the shield. With this information I will allow myself to make a prediction - If SpaceX does not scrap completely and fast this d...
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