Gas Dynamics:1D steady compressible
http://www.dept.aoe.vt.edu/~devenpor/aoe3114/calc.html
Shock Tube:
http://silver.neep.wisc.edu/~shock/tools/gdcalc.html
http://www.dept.aoe.vt.edu/~devenpor/aoe3114/shocker/stinfo.html
http://www.dept.aoe.vt.edu/~devenpor/aoe3114/shocker/stinfo.html