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Help on how to plot the Rayleigh line for a flow?

  1. Mar 21, 2010 #1
    1. The problem statement, all variables and given/known data

    I need to plot the Rayleigh line for a flow that has the following conditions at one point
    (Perfect gass assumption holds, R=287 J/kgK, gama=1.4)
    p = 101.3 kPa
    T = 300 K
    s = 6.867*10^3 J/kgK
    M = .25

    My question is what equation am I actually supposed to plot for a Rayleigh line?

    Any help is appreciated. TIA

    2. Relevant equations


    3. The attempt at a solution

    So far i have tried plotting the change in entropy as a function of mach number but that does not seem to be right (seen here as S_R http://upload.wikimedia.org/math/7/0/e/70eca7a87051faef8ba16009e8f46fe2.png)
  2. jcsd
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