Dainese D-Air Racing Airbag System Explained
After more than 10 years of study and experiments, D-Tec (Dainese Technology Center), the Dainese R&D department, introduced D-air Racing, an innovative airbag system set out to revolutionize the motorcycling racing industry.
What was really interesting at this new system from Dainese was that it was designed to provide protection for areas that conventional safety gear usually leave exposed, namely shoulders, collarbones and neck. The entire system was, in fact, fitted in a special attachment (or ‘sack,’ as Dainese calls it) placed on the rider's shoulders and back. The D-Air safety system works without any connection to the motorcycle. This year, Guy Martin wears the Dainese system at Isle of Mann.
The sack comprised a GPS receiver, various accelerometers, a hybrid gas generator, a processor to evaluate data (and trigger the airbag inflator), lithium batteries, and the airbag envelope. Unlike a car airbag system, in the D-Air, the processor is looking at the GPS sensor for speed and position, at three angular velocity sensors for rotational data, and at three linear accelerometers.
The device triggers when the rider falls due to sliding of the front (front lowside) or rear (back lowside) wheel or in the event of a highside. The trigger signal then reaches a gas generator which inflates the bag in approximately 40 milliseconds.
When opened, the latest D-Air Racing protects shoulders and the collar bones areas primarily. Furthermore, the airbag sack creates a surface for the resting and support of the helmet that limits the movement of the neck. The airbag deflates all by itself and the suit returns to its original form. According to Dainese, the bag takes 20 milliseconds to inflate, stays inflated for 5 seconds, and fully deflates 20 seconds later. What is really interesting is that after deflation, the rider can continue racing.
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On an other hand, for the last 2 years similar airbag electronic technology is already used and traded worlwide.
This technology has been first applied to Helmets (APC Helmets) and since AU Neck Brace August 2010 in a Neck Brace (APC Neck Brace)
and It could probably be easily applied to jacket.