Air intake model (stock KSP)

[PlonioFludrasco]

Hi guys!!

Does anybody knows the maths behind air intake mechanics?

I haven't found anything about that, and I'd like to calculate how much intake air I'll have at a certain speed, altitude ecc and how that modify engine performances.

Thanks!!

[KvickFlygarn87]

I don't think so, it's probably hidden in the code. Try checking the part.cfg out though!

[MKI]

Last i checked the

Air Intake values are based off speed and Atmospheric density.

Engines thrust values are based off Air Intake Speed, throttle level, and Air Intake levels

Engine isp is based on atmospheric density

(please correct me if im wrong)

You also should think about the throttle level with relation to the other factors. As you can lower the throttle to keep your engine running at higher altitudes and still be "going".

Ill give big props to who ever brings in the formulas and explains them in detail, as the relation between the air-intake, and engine performances is pretty dynamic, and then you still have to factor in your ships design, such as drag, angle of attack and throttle level.

Edited March 23, 2014 by MKI

[Claw]

Last i checked the

Air Intake values are based off speed and Atmospheric density.

Engines thrust values are based off Air Intake Speed, throttle level, and Air Intake levels

Engine isp is based on atmospheric density

(please correct me if im wrong)

You also should think about the throttle level with relation to the other factors. As you can lower the throttle to keep your engine running at higher altitudes and still be "going".

Ill give big props to who ever brings in the formulas and explains them in detail, as the relation between the air-intake, and engine performances is pretty dynamic, and then you still have to factor in your ships design, such as drag, angle of attack and throttle level.

Air intake values are also based off the intake's AoA. If your intake is too far off prograde when the air is thin, the "intake air" production will drop off. Each intake also has their own surface area value which effects intake air production.

Throttle position doesn't effect "intake air" production, but does effect intake air demand. That's why throttling back when the air is thin helps. The intakes are still producing, but if your engine is demanding too much if flames out.