Originally Posted by
sha90
i did google hovding before i posted but theirs inflate on impact. i think it should just be an inflated design, like wearing a cushion on your head.
I think the issue is that a helmet is not just a cushion. It has to deflect, absorb, or spread out the impact. It has to be wearable with minimal discomfort, and last a reasonably long time. Now, an inflatable structured material inside a hard shell might work OK, but the closer its properties get to styrofoam, the more likely styrofoam will win out on cost.
But it's certainly an interesting area for research.