Why the Su-30MKI tyres are filled with pure nitrogen
The Su-30MKI uses pure nitrogen in its tyres to prevent internal rubber oxidation and eliminate combustion risks. This completely dry, inert gas stops moisture freezing and ensures stable pressure.
Removes 21 Per Cent Oxygen
Standard compressed air contains roughly 21 per cent oxygen. When trapped inside a high-pressure aircraft tyre, this oxygen chemically reacts with the rubber and degrades the material over time. Pumping the Su-30MKI tyres with pure nitrogen eliminates this internal oxidation and increases structural lifespan.
Stops 100 Per Cent Combustion
A heavy fighter jet generates intense friction and extreme brake heat during rapid runway touchdowns. Because normal air contains oxygen, it can actively support combustion if a tyre bursts. Nitrogen is an inert, non-flammable gas that will never ignite or feed a fire under these extreme temperatures.
Ensures Zero Moisture Expansion
Regular shop air carries invisible water vapour that can freeze into ice at high altitudes or turn into expanding steam during landing. Dry nitrogen is completely moisture-free, which prevents these dangerous pressure spikes. This guarantees that the Su-30MKI tyres maintain consistent pressure throughout the flight cycle.
Prevents Internal Wheel Corrosion
The combination of moisture and oxygen found in normal compressed air causes rust inside the wheel assembly. Using pure, dry nitrogen eliminates this chemical reaction entirely. This protects the metal components of the landing gear from corroding from the inside out.
Slows Down Pressure Loss
Because nitrogen molecules are physically larger than oxygen molecules, they cannot easily escape through the rubber casing of the tyre. This slower leakage rate ensures the aircraft maintains a safe and stable pressure for longer periods. It provides crucial reliability for the Su-30MKI during demanding military operations.
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