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In this answer I showed the schematic diagram of a basic de Laval nozzle and representative plots of how temperature, pressure and and velocity would behave.

It can be used as a rough representation of how these would vary from combustion chamber, through the expansion nozzle, and out into ambient space, but not an accurate example nor with any quantitative information.

I'd just written the comment:

@SteveLinton there's a ballpark estimate of 1500ºC in the linked "expansion of the ~100 atm chamber pressure..." answer, but if an answer with more details can't be found that would certainly make for an interesting new question by itself. Some quantitative plots of velocity, temperature, pressure as a function of position from chamber through nozzle and into ambient for a canonical modern engine.

Question: What might quantitative plots of velocity, temperature, pressure as a function of position from chamber through nozzle and into ambient for a few canonical modern engines examples look like? Plots should have units for the vertical axis(es).

below: "gas characteristics along a de Laval nozzle, T - absolute temperature; p - pressure; v - speed; M - Mach number" from here.

gas characteristics along a de Laval nozzle

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  • $\begingroup$ I can give some SSME plots at various power levels, but not for other engines. $\endgroup$ – Organic Marble Dec 19 '18 at 18:03
  • $\begingroup$ @OrganicMarble SSME is certainly a canonical engine. $\endgroup$ – uhoh Dec 19 '18 at 23:55

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