PSFC units in performance.py

[ddiama]

Hello, I am working on setting up a simple turboshaft engine so I can use the results for another model. While looking at the PSFC calculation, I noticed that in the performance.py the PSFC units are set as "lbm/(h*lbf)".

Since the PSFC = Wfuel (lbm/s) * 3600 (s/h) / (power (hp)), shouldn't the units be lbm/h/hp? I am asking since I need to convert the units to SI so I can use it in the downstream model.

Thank you!