Airbag Chemistry
(References : The website URL)
http://
www.lemurzone.com/airbag/inflate.htm
The driver\'s airbag unit consists of an
airbag, and a gas generator. The unit is mounted in the steering wheel hub,
concealed beneath a fabric covering. The gas generator is a metal canister
filled with mixture containing mostly sodium azide (formerly a solid rocket
propellant). When a car is involved in a crash severe enough to activate
the sensing unit(s), an electrical charge is routed to the gas generator,
which ignites the fuel. The fuel then creates a tremendous amount of inert
nitrogen gas filling the airbag. The total elapsed time from contact to
full deployment of the airbag will vary, but it should deploy within 1/25
second. To reduce the airbag’s impact on people, several multistage gas
generator concepts are now being developed enable the deployment to match
the severity of the crash.
A typical (old design) gas generator is filled with sodium......
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