How fast does an airbag explode

Children aged 12 years or more, or over cm tall, may travel the front, but must wear the seat belt. Children under 3 must be in a child car seat. Children aged 3 or older can sit in the back using an adult belt.

Begin typing your search term above and press enter to search. Press ESC to cancel. Skip to content Home Philosophy How fast do you have to be driving for airbags to deploy? Ben Davis April 21, How fast do you have to be driving for airbags to deploy? At what speed do airbags deploy in a side collision? Do airbags deploy at mph? Can I sue Toyota for airbags not deploying? Can Airbags explode?

How often do airbags fail? Can airbags explode after a crash? Could an airbag cause more harm than good? Can a 10 year old sit in the front? Should passenger airbag be off? Should I turn on passenger airbag? Do you turn the airbag off if a child is in the front?

Sodium azide, the original preferred chemical, has been superseded by less toxic gas-generating material. The solid chemical mix is held in what is basically a small tray.

Think of it as supersonic Jiffy Pop, with the kernels as the propellant. Hurtling forward at 30 mph, an unbelted driver moves through the space between his chest and the wheel in 23 or so milliseconds. In fact, the maximum pressure in an airbag is less than 5 psi—even in the middle of a crash event.

Advanced airbags are multistage devices capable of adjusting inflation speed and pressure according to the size of the occupant requiring protection. Those determinations are made from information provided by seat-position and occupant-mass sensors. The SDM also knows whether a belt or child restraint is in use. If we assume no forces on the human forget about the seatbelt for now , the human will have a constant velocity.

With this constant velocity, we can calculate the time to impact using just the definition of average velocity in one dimension:. Using the values of That is a super short time—like the blink of an eye. OK, actually it is less than the " blink of an eye " which seems to take around 0. But wait! It's even worse. This calculated time is how long it would take for the human to hit the steering wheel. But the idea is to have the human hit an airbag instead.

That means that not only does the airbag have to inflate in this time, but it also decreases the distance the person can travel. Let's say the distance is cut in half—that also cuts the inflation time in half to about 0. Try blowing up a balloon in under a tenth of a second. It's pretty much impossible. Now try doing the same thing for a larger bag in even less time. You can't do that with air. The only answer is an explosion that produces a gas to fill the airbag.

It's even crazier than you think. Let's imagine what has to happen for this collision which is just at 35 mph. All of that has to happen before the human hits the bag.