ModuleEnginesFX AtmosphereCurve

[Starhelperdude]

How is Atmosphere Curve calculated? is there a formula?

(I'm talking about this:)

[Kartoffelkuchen]

I think there was a mod which allowed you to create and export float curves in Unity. For simple atmosphereCurves, with only two keys like you have you don't really need it though. Key 0 is the specific impulse at 0 atmospheric pressure (so in Space), key 1 at full atmospheric pressure (at ground level). The higher the number you choose, the better is the ratio of thrust generated / fuel consumed.

[Starhelperdude]

8 minutes ago, Kartoffelkuchen said:

I think there was a mod which allowed you to create and export float curves in Unity. For simple atmosphereCurves, with only two keys like you have you don't really need it though. Key 0 is the specific impulse at 0 atmospheric pressure (so in Space), key 1 at full atmospheric pressure (at ground level). The higher the number you choose, the better is the ratio of thrust generated / fuel consumed.

the example that I chose here is the Ant engine, with a SL ISP of 80 and a VAC ISP of 315, which are shown in the 1st and 2nd keys

though, what does the 3rd key refer to?

[Nnimrod]

I would also like a way to represent float curves with equations, and edit them.

[wasml]

The third key says at three atmospheres you ISP is 0.001

There are two additional numbers you can use to specify the slope - I think (grain of salt here) one is the incoming and one the out going slope.

Here's the Unity addon for float curves