...
| Nozzle | Outer Diameter | Throat | Fate |
|---|---|---|---|
| All American Nozzle | 54mm | 13 x 54mm hot fires. Survives in lab | |
| 1G Z-Nozzle | 98mm | Cracked during Characterization Static Fire #2, previously survived 6 98mm hot fires. | |
| 4G Z-Nozzle | 98mm | Undetected Stress Concentrator broke the nozzle during XB-98-4G #1 | |
| 4G Z-Nozzle #2Rev 2 | 98mm | New design survived RUD of XB-98-4G #2 and successfully hot fired during XB-98-4G #3 | |
| Characterization Nozzle #1 | 3.62 in | .42 in | Destroyed during Characterization Static Fire #1 |
| Characterization Nozzle #2 | 3.62 in | .42 in | Survives in lab. Unused |
| Characterization Nozzle #3 | 3.62 in | .48 in | An angry lathe ate this nozzle when it was parted off. A little dinged on the edges. |
| Characterization Nozzle #4 | 3.62 in | .5 in |