DLR, Scienza, Spazio CAUTION, HOT: How a rocket holds up in hypersonic flight 25 July 2016 fborgosano Leave a comment Share: The exterior of a rocket is exposed to extremely high temperatures during hypersonic flight. But how exactly does the surface structure change under varying air resistance and with respect to heat flow and acceleration? from DLR Portal – News Archive ift.tt/2arISS8 Share: