NASA has developed special probes that will fly aboard F-15B jets trailing closely behind its X-59 "quiet" supersonic jet in order to measure the shock waves it produces.

NASA will fly F-15s through supersonic shock waves behind its experimental X-57 jet

Source: space
Source Link: https://www.space.com/space-exploration/quesst/nasa-will-fly-f-15s-through-supersonic-shock-waves-behind-its-experimental-x-57-jet