![Top](http://www.experimental-engineering.co.uk/wp-content/uploads/2013/09/2013-08-21-23.26.35-300x169.jpg)
This is a passenger side airbag from a BMW vehicle. Here is the top of the device, with all the warning labels & information.
![Folded Bag](http://www.experimental-engineering.co.uk/wp-content/uploads/2013/09/2013-08-21-23.27.54-300x169.jpg)
Here the outer plastic wrap has been removed from the unit, showing the folded nylon fabric bag.
![Frame](http://www.experimental-engineering.co.uk/wp-content/uploads/2013/09/2013-08-21-23.29.02-300x169.jpg)
The base frame with the gas generator mounted.
![Gas Generator](http://www.experimental-engineering.co.uk/wp-content/uploads/2013/09/2013-08-21-23.29.11-300x169.jpg)
Gas generator with warning label. This is a two part generator, with a pair of independent cores inside.
![Generator Core](http://www.experimental-engineering.co.uk/wp-content/uploads/2013/09/2013-09-03-13.02.33-300x169.jpg)
One of the generator cores removed from the heavy steel shell of the gas generator. The layers of wire mesh on the outside act as a flame trap, releasing only the gas generated from the burning propellant inside.
![Propellant](http://www.experimental-engineering.co.uk/wp-content/uploads/2013/09/2013-09-03-13.05.02-169x300.jpg)
End cap removed from the core, showing the pellets of propellant & the many layers of mesh & fibreglass filter material. The explosive initiator is in the bottom of this unit. A spring under the end cap firmly holds the pellets against the initiator.
![Initiator](http://www.experimental-engineering.co.uk/wp-content/uploads/2013/09/2013-09-03-19.27.46-300x169.jpg)
Finally, here is the explosive initiator that is located in the bottom of the core under the propellant pellets. This consists of a primary explosive & an electric match, which can be seen below as the device is disassembled.
![Initiator Components](http://www.experimental-engineering.co.uk/wp-content/uploads/2013/09/2013-09-03-19.30.45-300x169.jpg)