> Might be, but those shock diamonds are not a great sign for their nozzles despite being beautiful Shock diamonds do not determine nozzle health/stability. Th

> Might be, but those shock diamonds are not a great sign for their nozzles despite being beautiful Shock diamonds do not determine nozzle health/stability. The diamonds themselves are 100% part of nominal operation. What you're looking for is flow separation from the nozzle because it's under expanded leading possible instability. Scott Manly did a great bit on it[0]. [0] https://youtu.be/l5l3CHWoHSI?t=261 https://youtu.be/l5l3CHWoHSI?t=261