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cavitation
Correct me if I'm mistaken,but while cavitation and supercavitation are certainly phenomena which operate within the study of fluid dynamics,for our purposes,they are limited to "liquids" not vapor or gases.
The low pressure around the structure allows momentary phase change to a vapor ( cavitation ) which,after passage of the structure attains a pressure regain at which ambient surrounding temperature allows for dew point condensation back to a liquid form,collapsing the bubble.
In the air,as an aircraft accelerates through stages of Mach you will observe condensation clouds of water vapor created as the local compressive heat of compression is released and visible droplets form in the colder low pressure of the rarefaction behind the supersonic shockwave.
For cavitation of the air to occur,the gases which form the atmosphere would have to be destroyed into free radicals and free atoms.Yes?
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