Air intake

An air intake (or simply an “intake”) is a part which supplies intake air, a resource required by jet engines. To do so they must be in their “Open” state and inside an oxygenated atmosphere.

Usage

Intakes induce more drag while open, but can be toggled closed or opened; this can be done manually but action groups is recommended to avoid asymmetric drag.

Intake air collected varies proportionally with speed and inversely with altitude. Optimal performance requires minimizing drag by closing intakes while leaving open the minimum number required at the given speed and altitude to supply the active jet engines and avoid asymmetric flame-outs. Also, when an aircraft is using only rocket engines, all intakes should be closed to reduce drag to the minimum.

Seaplanes and boats have also been made with unorthodox use specifically of the XM-G50 Radial Air Intake.

List of air intakes

Image	Part	Radial size	Cost ()	Mass (t)	Max. Temp. (K)	Tolerance (m/s)	Tolerance (g)	Intake Air () (Initial/Max)	Intake Area (m2)
	Small Circular Intake	Tiny	250	0.007	1 200	7	50	0.5 / 0.5	0.10
	Circular Intake	Small	680	0.04	1 900	7	50	2.0 / 2.0	0.60
	Adjustable Ramp Intake	Small	2 680	0.06	2 400	7	50	2.0 / 2.0	0.74
	Shock Cone Intake	Small	3 050	0.12	2 400	7	50	2.0 / 2.0	0.75
	Mk1 Diverterless Supersonic Intake	Small	720 (560)	1.17 (0.17)	2 000	10	50	2.0 / 2.0	0.61
	Engine Nacelle	Small	600 (480)	0.90 (0.15)	2 000	10	50	5.0 / 5.0	0.50
	Engine Pre-cooler	Small	1 650 (1 618)	0.35 (0.15)	2 000	10	50	5.0 / 5.0	0.50
	XM-G50 Radial Air Intake	Radial mounted	250	0.02	2 000	10	50	2.0 / 2.0	0.31
	Adjustable Ramp Intake (Radial)	Radial mounted	900	0.01	2 400	7	50	0.5 / 0.5	0.10

The values of masses in the table don't consist the mass of the intake air (5 kg/), as you can see in the SPH/VAB.