I've heard it referred to as "aero-spike" although all my research ended up being about a centralized cone linear arranged rocket engine. I was wondering the other day, seeing all the boat tail stuff, if anyone had tried some kind of retractable pre-wake generator, punching a hole for the car to run in. The ones used on hypersonic missiles are generally just a simple flat disc of a calculated size on a pole at a calculated distance ahead of the main body. Calculations based on effective speed and size of the vehicle. Can't punch a hole for the whole thing or you loose aerodynamic effective steering.
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