THREE TRIGGER SYSTEMS - MANY ADVANTAGES
How does an airbag generally work?
An avalanche is not a liquid mass, not a waterfall. The avalanche snow consists of snow crystals of various shapes. If these granules start to flow during an avalanche, the granulate parts rotate. The small parts crawl under the larger volume parts and push them up. There, this “segregation dynamic” subsides and the larger-volume, heavy parts sink back down. However, once a snow slab has formed, it remains on the surface despite the greater weight due to the large contact surface. If a skier/snowboarder gets caught in an avalanche, the same thing happens. It is pushed upwards by the segregation effect. There the buoyancy dynamic breaks down and it immediately sinks back into the snow masses. It lacks the necessary support surface that balances its volume density with the density of the avalanche snow. However, if the skier/snowboarder deploys his avalanche airbag in time, he can counteract the burial.
A basic distinction is made between ABS TWINBAGS and so-called mono airbags. ABS uses both systems in different backpack models.