How Does An Airbag Restrain; What Makes An Airbag Inflate - Chevrolet 2008 Corvette Owner's Manual

Your vehicle may or may not have seat-mounted side
impact airbags. See Airbag System on page 1-43.
Seat-mounted side impact airbags are intended to inflate
in moderate to severe side crashes. Seat-mounted
side impact airbags will inflate if the crash severity is
above the system's designed threshold level. The
threshold level can vary with specific vehicle design.
Seat-mounted side impact airbags are not intended to
inflate in frontal impacts, near-frontal impacts, rollovers,
or rear impacts. A seat-mounted side impact airbag
is intended to deploy on the side of the vehicle that
is struck.
In any particular crash, no one can say whether an
airbag should have inflated simply because of the
damage to a vehicle or because of what the repair
costs were. For seat-mounted side impact airbags,
deployment is determined by the location and
severity of the side impact.
What Makes an Airbag Inflate?
In a deployment event, the sensing system sends
an electrical signal triggering a release of gas from
the inflator. Gas from the inflator fills the airbag
causing the bag to break out of the cover and deploy.
The inflator, the airbag, and related hardware are all
part of the airbag module.
Frontal airbag modules are located inside the steering
wheel and instrument panel. For vehicles with
seat-mounted side impact airbags, there are airbag
modules in the side of the front seatbacks closest
to the door.

How Does an Airbag Restrain?

In moderate to severe frontal or near frontal collisions,
even belted occupants can contact the steering wheel
or the instrument panel. In moderate to severe side
collisions, even belted occupants can contact the inside
of the vehicle.
Airbags supplement the protection provided by safety
belts. Frontal airbags distribute the force of the
impact more evenly over the occupant's upper body,
stopping the occupant more gradually. Seat-mounted
side impact airbags distribute the force of the impact
more evenly over the occupant's upper body.
But airbags would not help in many types of collisions,
primarily because the occupant's motion is not
toward those airbags. See When Should an Airbag
Inflate? on page 1-48 for more information.
Airbags should never be regarded as anything more
than a supplement to safety belts.
1-49