Why does a prop ice up so apparently readily?

"Peter" wrote in message
...
These two things combined with the fact that the
prop has a high collection efficiency because of its thin cross section

This I don't see - as it happens, the SOP for this turboprop when in
icing conditions is to go max revs, the reason being that the less the
AOA the less ice will be picked up. They also go 10-15-deg flaps for
the same reason - it reduces the wing AOA.

Changing the AOA doesn't alter the cross-section of the prop. Thinner
airfoils DO accrete ice faster than thicker ones, even as airfoils at higher
AOA accrete ice faster than airfoils at lower AOA.

Pete