Airbags And Seat Belts : What Is An Airbag?

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Airbags and seat belts:

What is an airbag?

A typical airbag is a soft pillow to land against during a car crash. Airbags can be the necessity for saving your life in an accident. It is proven to be a major factor in vehicle passenger safety and survival. Airbags protect the passenger’s head from striking the dashboard and are extremely important in side collisions where a person can still be struck by an object entering the car. Statistics, according to, show that airbags reduce the risk of dying in a direct frontal crash by at least 30%.

When were they invented?

During WW2, the first patent on an inflatable crash landing device for aeroplanes was established by who? and then during the 1980s the first commercial airbags in automobiles appeared. Where?

How do they work?

Airbags want to slow the speed of the passengers’ forward motion with little or no damage within a fraction of a second. The law that applies here is inertia, Newton’s first law. It states that an object wants to keep on doing what it’s doing and will do so unless an outside force is acted upon it.

There are three major parts to the airbag;

Airbag: the airbag is made of a thin, nylon fabric that is folded into the steering wheel or dashboard.

Inflation system: this reacts sodium azide (NaN3) with potassium nitrate (KNO3) to produce nitrogen gas. It 's hot blasts of this gas that inflates the airbag.

Sensor: the sensor tells the bag when to inflate. The inflation happens when
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