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Pressure - Nozzle axis

Pressure - Nozzle axis

Pressure - Nozzle axis

(OP)
Good morning (sorry for my english)
but I've this graph

It represent thrust coefficient vs epsilon (ratio area) parameterized by dead end pressure.

The green line is the perfect adaptation. I've these 4 points and I've to create a graph that will show how the pressure goes with the exit area regarding these 4 point.

This should be the solution.



I don't understand point three and four. Can anyone help me??

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