Are you certain? if you provided a video it would be easier to see what was going on.
I tried to replicate this issue but it took 9-11 shots from an m60 to destroy a huey rotor in both 1.8 and 1.7. Additionally, the health of the rotors has not changed between patches..

Maybe it is placebo but im 80% sure it is weaker, maybe the hitboxes for it are too big, which would explain why it took the same amount of shots while still being "weaker". Other exp players also agree it is much weaker than in 1.7

Can you try it when the rotors are spinning? There was some mention in the patch notes of a change to "hit chance" of rotors. If this is still the same then maybe try shooting through the frame of the heli, towards the rotor, I can only guess at this point that maybe the heli frame was blocking it in 1.7.I notice that when im flying with my rotors facing away from the enemy they are still easily able to hit it consistently. Otherwise, i guess it is just placebo

This change seems to be entirely related to
"Removed: Rotor hit chance mechanic commented out"
Basically, previous behaviour was that sometimes hits to the rotor blades did no damage. It seems now the damage is consistent and damages every hit. Projectiles seem to only collide with the rotor in a smallish area around the centre whilst it is spinning.

well as long as it only hits around the centre then i guess it is realistic. That's a bummer. Thanks for testing

https://discord.com/channels/105462288051380224/1025131938207498422/1534394775254601982

https://discord.com/channels/105462288051380224/1025131938207498422/1537842848962183288

https://discord.com/channels/105462288051380224/1025131938207498422/1537425162868232255

For the record, you are flying very low and getting many hits from small arms fire. A huge portion of downed helicopters during the vietnam war were due to small arms fire.

millitarecho, I have heard that they're going to "fix" this next patch. No idea how. I kind of felt that fragile rotors was realistic.

https://discord.com/channels/105462288051380224/1025131938207498422/1539294817798983761