vs. for a
fixed value of q, inlet pressure ,
and inlet density
Region I:
Pressure of burned gas
Pressure of C-J detonation wave
Strong detonation Gasvelocity relative to wave front is slowed
to subsonic speed Pressure and density increases significantly
for will be rarely observed
(Figure 22.5)
Region II:
Pressure of burned gas
Pressure of
C-J detonation wave
Weak detonation Gas velocity relative to wave front is slowed to subsonic speed Burned gas velocity > speed of sound at isochoric condition
weak detonation attains infinite velocity
Region III:
In this region
Therfore
Hence
in this region is imaginary and physically impossible
vs. 
for a
,
Pressure of C-J detonation wave
Gasvelocity relative to wave front is slowed
will be 
rarely observed
Pressure of
weak detonation attains infinite velocity
Therfore
in this region is imaginary and 
