Glom From United Kingdom, joined Apr 2005, 2823 posts, RR: 9 Posted (6 years 6 months 4 weeks 9 hours ago) and read 7182 times:
Surely helicopters have anti-icing on the rotors. Prop planes have them for the props.
What about the S-92? That doesn't seem to have anti-icing because they keep cancelling flights due to cold weather. It's hovering at freezing point at the moment. Surely this cannot be exceptional for a helicopter, particularly one that is being used NEAR THE ARCTIC CIRCLE!
Shhpanked From United States of America, joined Dec 2008, 69 posts, RR: 0
Reply 2, posted (6 years 6 months 4 weeks 6 hours ago) and read 7152 times:
I want to say the S-92 has an engine anti-ice system but that's it.
Anyways, anti-ice system for the rotor system itself is fairly uncommon simply because of the added weight and complexity. But the ones that do have anti-ice systems in place pump bleed air along the leading edge of each rotor. I've also heard of leaking glycol along the trailing edge of the rotor but couldn't give any examples off the top of my head.
However, there is research being done on ultrasonic pulses to help remove ice build up. I literally have no idea if it's operational or in the development stages.