Looking for Rocket Nozzle Equations

[treddie]

Howdie.

This may not be the forum for this, but I am having trouble finding a forum on rocket science.

Specifically, it is easy to find various equations for rocket chamber and nozzle design, but they all leave out the crucial equations that relate parabolic nozzle, divergent section, inital & final wall angles to expansion ratio for various % bell nozzles. I have seen graphs of this, but no discussion of the underlying equations.

Any ideas?

Thank you very much,
treddie

 

[jmatejka]

Here is a place to start, De Laval nozzle:

http://en.wikipedia.org/wiki/De_Laval_nozzle

 

[treddie]

jmatejka,

Thank you for your response.

I've actually visited that page before, but what I am looking for is very specific and difficult to find information on. Here is an image of the graph I am trying to find the underlying equations for:

This graph relates to the following nozzle geometry: