How An airbag works the simple way #engineering #howitworks #Science #learnontiktok

3-Second Blueprint (English)

1. An inertial crash sensor detects rapid vehicle deceleration and heats an igniter wire inside solid pellets to generate pure nitrogen gas.
2. A metal mesh filter traps hot combustion debris while expanding gas bursts the steering-wheel tear seam within roughly 30 milliseconds.
3. Rear vent holes bleed nitrogen upon impact so the powder-dusted bag absorbs kinetic energy like a cushion instead of rebounding the head.