How Airbag Suits Work
Multiple body sensors, accelerometers and gyroscopes feed real-time data into microprocessors hidden in the back hump, where sophisticated algorithms sense a crash and then deploy the airbag. A compact pneumatic inflation module, also in the hump, uses a "cold charge" of nitrogen to inflate the airbag in less than 50 milliseconds. The bag remains fully inflated for roughly 5 seconds, and then slowly deflates over a period of roughly 30 seconds. The Alpinestars Tech Air suit features a "Dual-Charge" system that will inflate the airbag a second time, so if a racer is able to continue after a crash, he will still be adequately protected.