Just found this news article and thought some of you might be interested as there have been threads about the benefits of helmets, NVGs etc
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Heavy helmets grounding chopper pilots
A researcher in Fredericton is trying to help find a way to prevent neck
injuries for military helicopter pilots.
Some pilots end up being grounded by neck injuries caused by the weight of
their helmets.
University of New Brunswick graduate student Michael Harrison has joined
forces with the Canadian military to look for ways to lighten the load.
"When you put a set of night-vision goggles on a helmet, the weight adds up
to about 3½ kilos. To put it in a household perspective, four litres of
milk. If you buy a bag of milk at the grocery store and put it on your head
and drive home wearing that, you'll get a rough idea of what a helicopter
pilot might feel like."
Harrison and other researchers are working with 31 pilots at CFB Gagetown,
which is the home of the Canadian military's only full-motion flight
simulator for the CH-146 Griffon helicopter.
Link to news report