First calculate the dimensionless resistance,
.
From Figure (9.21) for
etc.
or accurately utilizing the program as in the following table.






0.12728 
1.0000 
40.0000 
40.0000 
0.0 
0.11637 
0.12420 
0.40790 
40.0000 
42.1697 
2.1697 
0.30000 
0.11392 
0.22697 
40.0000 
50.7569 
10.7569 
0.50000 
0.07975 
0.09965 
40.0000 
107.42 
67.4206 
0.80000 
<>
Only for the pressure ratio of 0.1 the flow is choked.






0.12728 
0.99677 
0.99195 
4.5910 
0.98874 
4.5393 
0.12420 
0.99692 
0.99233 
4.7027 
0.98928 
4.6523 
0.11392 
0.99741 
0.99354 
5.1196 
0.99097 
5.0733 
0.07975 
0.99873 
0.99683 
7.2842 
0.99556 
7.2519 
<>
Therefore,
and for the same the pressure.
Hence, the mass rate is a function of the Mach number.
The Mach number is indeed function of the pressure ratio but
and therefore mass flow rate is function pressure ratio only
through Mach number.
The mass flow rate is
and for the rest
