Engines Thrust at Sea level and In Vaccum

[ouion]

In real life rocket engine thrust vary or change as they go higher up.Here are some examples.

The RS-25 or Space shuttle Main Engines at Sea level It Produces 1,859 kn as it go into Space the Thrust is 2,279 Kn.

If that was implemented the Mainsail could go up 1500 Kn to 1600Kn or 1732 Kn.

I hope you like or have your own opinions on it.

[astropapi1]

Isn't it like this already?

[RocketPilot573]

Isn't it like this already?

No, the ISP just goes up.

[Pursuedtank]

No, the fuel flow changes as Isp changes, in real rocket engines the thrust would change rather than the fuel flow. C7 said it could be considered a bug that might be fixed here. There is a mod that will change it to the correct method here, although I'm not sure if it works in 0.21.