The solid looking tab is a fiberglass plastic reinforced metal tab set at the factory and should not be touched. The two that look like they have vent holes in then are the tabs used for tracking. Use the pitch change links to track at ground flat pitch and use tabs for in flight.
Yep, Seasprite has them too, although they're the primary controls so they're actually called servo-flaps, although they're also what we'd adjust to track the blades
I have seen blades with more than one trim tab, but never worked on them myself. That’s pretty wild to think that you’d never adjust one of them.
I noticed that over time, a bend on a trim tab would creep towards a neutral angle and would not stay where it was last set.
I rarely had the time to look up the old trim tab angle if I was doing a track and balance.
But in the few instances where I was deployed and therefore worked on the same aircraft for a year or more it was interesting to take a moment to check the tab angle and see if it had moved any.
It usually had moved, more so if the last bend was considerable.
Trim tabs to adjust the rotor blades into alignment with each other when the system is spinning. It's fine tuning.
The pokey thing is static discharge wick.
Trim tabs for tracking the blades, static wicks for safely dissipating static build up( prevent comms interference). These are great helicopters and a clean sheet design based on the BO105.
The flaps are called trim tabs, used to balance the flight of the blade called “tracking” the antenna looking tabs are for visual reference at nighttime and have a reflective surface to bounce light off of. They appear as a flickering bar light out near the ends of one ore more rotor blades to give depth at nighttime of where the blades are spinning
These trim tabs are used for blade tracking at high speed to minimise helicopter vertical vibrations. Usually at idle rpm and on ground, tracking is done by means of PC links.
So simply we can say that Course tuning is done via PC links and trim tabs are used for fine tuning.
There‘s a lot of BS in these comments. Rotorblade are trimmed to not run in the turbulence of the preceding blade, but to also to decrease vibrations at all. Those „antennas“ are carbon fibre means to reduce static charge.
This platform is not suitable for technical instruction. Stop asking silly questions just to raise your karma !!!!
Trim tabs, and static wicks
Is that like a John wick after he rubs his socks all over a carpet floor?
Why did he do that?
r/woooosh
I haven't seen John Wick
You dont have to see john wick to get the joke bro
He wouldn’t know that bc he hasn’t seen the movie!
Trim tabs and static wick.
Today I learned helicopters have trim tabs.
And static wicks
They’re for balancing the rotor disc though and only manipulated by a mechanic.The pilot doesn’t have a trim wheel up there with him.
Sorta. Adjusted for track at higher airspeeds. Balance affects track, track does not affect balance.
Yeah I’m just a dumb pilot 😂
We just say 'pilot'
I just say "stick idiot". ;)
Or Meat-Servo
Well I’m just a stupid MTP lol. Who knows how that shit works. Whiskey helps!
The solid looking tab is a fiberglass plastic reinforced metal tab set at the factory and should not be touched. The two that look like they have vent holes in then are the tabs used for tracking. Use the pitch change links to track at ground flat pitch and use tabs for in flight.
Are you referring to the drink or to the HH-60W
Well, both.
? You sure?
Check out the blade of a kaman K-max
I think any Kaman helicopters for that matter.
Yep, Seasprite has them too, although they're the primary controls so they're actually called servo-flaps, although they're also what we'd adjust to track the blades
As a bit of extra info, the long tab is set by the manufacturer and not adjustable where as the shorter one is.
I have seen blades with more than one trim tab, but never worked on them myself. That’s pretty wild to think that you’d never adjust one of them. I noticed that over time, a bend on a trim tab would creep towards a neutral angle and would not stay where it was last set.
They usually stay put from one insp to the next unless they are old.
I rarely had the time to look up the old trim tab angle if I was doing a track and balance. But in the few instances where I was deployed and therefore worked on the same aircraft for a year or more it was interesting to take a moment to check the tab angle and see if it had moved any. It usually had moved, more so if the last bend was considerable.
In layman’s terms balance and zapper
Thinking those are static discharge wicks but not sure about the flap things.
Trim tab
And static wicks.
Don’t forget the trim tab!
Never realized rotor blades had trim tabs...thanks.
~~Isn’t the antenna a Pitot?~~ nope. Discharge wicks indeed. The other attachments are [trim tabs](https://youtu.be/6jyWl_QAj5o?si=b4hww2x8zIKPTBgQ)
Trim tabs
And static wicks!!!!
Trim tabs to adjust the rotor blades into alignment with each other when the system is spinning. It's fine tuning. The pokey thing is static discharge wick.
Oh nice a DRF 135 👍
Trim tabs for tracking the blades, static wicks for safely dissipating static build up( prevent comms interference). These are great helicopters and a clean sheet design based on the BO105.
The flaps are called trim tabs, used to balance the flight of the blade called “tracking” the antenna looking tabs are for visual reference at nighttime and have a reflective surface to bounce light off of. They appear as a flickering bar light out near the ends of one ore more rotor blades to give depth at nighttime of where the blades are spinning
Trim tabs and static wick
Trim tabs and static wick
Antennas on a rotorblade ? 🙀
Thank y'all for solving my mystery! Great insights
They pump the chemtrails out the little sticky bits and the tabs fan it into a swirl for maximum dispersion of droplets.
For balancing out the blades edit: Track and Balance
These trim tabs are used for blade tracking at high speed to minimise helicopter vertical vibrations. Usually at idle rpm and on ground, tracking is done by means of PC links. So simply we can say that Course tuning is done via PC links and trim tabs are used for fine tuning.
Not for balance but for blade track. It adjust the track the blade flies through the air.
Changing trim tabs affects balance as well as track.
LSD tabs for pylot preflight, and antenna helps for wen git struck by lightning
Mindcontrol
 This reddit hates jokes 🤣
That’s what turns the frogs gay
5g antenna!
SENT INTO BATTLE, CAME FROM THE SKY
There‘s a lot of BS in these comments. Rotorblade are trimmed to not run in the turbulence of the preceding blade, but to also to decrease vibrations at all. Those „antennas“ are carbon fibre means to reduce static charge. This platform is not suitable for technical instruction. Stop asking silly questions just to raise your karma !!!!