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calculator for engine .cfg?


toric5

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So I think i finally understand the ratio entry in the moduleengineFX, and its use with ISP. However, does anyone know of a way to easily calculate what the values should be if i want to, say, add a small amount of ablator/metal (from CRP) consumption to the engine? I don't know the exact amounts yet, waiting of copies of research papers, but is there any way i could input the maxthrust, isp, and ratios and get out the actual amount of resources per seconds? (Or some other combination) Just wondering if any other modders already have their own scripts so I don't go reinvent the wheel.

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@toric5 I'm not certain this is what you wanted but here's some info from @Nertea on engine configs

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First find the mass flow rate:

F (kN) = g0 * Isp (s) * flow rate (t/s)

Then the mixture ratio is the sum of all propellant densities * their ratios over their total ratio:

mixture ratio = (propellant1 density * propellant1 ratio + ...)/ sum(propellant ratios)

The flow rate for each propellant is then

propellant flow rate = mass flow rate / mixture ratio * propellant ratio/ sum(propellant ratios)

Work this backwards if you want to find the ratios given a desired flow rate

Edited by TheRagingIrishman
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