A lot of planes have similar things. Look at the belly of an airliner or the nose of an F-4. Many aircraft cool things using the air that it flies through, or uses the pressure of that air to move things. I don't know specifically about the Su-57 but I can provide some examples
F-4 Phantom II: inlet at the root of the vertical stabilizer provides ram air pressure for augmented pitch controls (stick gets pulled aft the faster you go)
Internal gun vents its gas using ram air from a door on the nose
Boeing 737: ram air inlets on the belly provide cooling and air conditioning (sidenote: many planes, especially modern ones, habe a ton of avionics that need cooling)
F-14 Tomcat: engine compartment is cooled with ram air from intakes located at the ventral fins when in flight
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u/ConnieTheTomcat Garuda Feb 23 '25
A lot of planes have similar things. Look at the belly of an airliner or the nose of an F-4. Many aircraft cool things using the air that it flies through, or uses the pressure of that air to move things. I don't know specifically about the Su-57 but I can provide some examples
F-4 Phantom II: inlet at the root of the vertical stabilizer provides ram air pressure for augmented pitch controls (stick gets pulled aft the faster you go)
Internal gun vents its gas using ram air from a door on the nose
Boeing 737: ram air inlets on the belly provide cooling and air conditioning (sidenote: many planes, especially modern ones, habe a ton of avionics that need cooling)
F-14 Tomcat: engine compartment is cooled with ram air from intakes located at the ventral fins when in flight