Consider a C-D nozzle with a throat and exit diameter of 252 mm and 657 mm, respectively. The reservoir pressure and temperature is 10 atm and 1000 K, respectively.
a) Calculate the back pressure (Pb) for each of these scenarios:
i) A choked nozzle with isentropic, subsonic flow throughout the nozzle
ii) Normal shock at the exit of the nozzle
iii) Isentropic, supersonic flow at the exit with no shocks and/or expansions