BobDDuck
Island Bus Driver
It's built in to most glass displays in the form of a sky pointer and a coordination "brick".
How can you determine rate of roll on a turn coordinator?
- Thread starter tcco94
- Start date
It's built in to most glass displays in the form of a sky pointer and a coordination "brick".
gotWXdagain
Polished Member
Isn't that just the "ball" part and not the "rate" part? The plane I fly has a sky pointer and isn't nearly as sensitive as a canted gyro.
BobDDuck
Island Bus Driver
I dunno. Every plane I've flown with a sky pointer is pretty damn sensitive to bank angle changes.
adk
Steals Hotel Toilet Paper
You're correct. Jets don't have any rate of turn indication. This is because unless you're doing less than 180 knots your maximum allowable bank angle isn't enough to give you a standard rate turn anyways.
Autothrust Blue
Welcome aboard the Washington State Ferries
As originally designed, I believe the Brasilia actually did have a turn coordinator.
Because, Brazil.
JustinS
Well-Known Member
Everyone seems to be missing the simplicity of a turn coordinator. The canted gyro allows you to view rate of roll. What this means is if the aircraft starts banking you can see that and correct it quickly. When wings are level on the TC, then you know they're level. In addition when established in a bank it will show your rate of turn so you can do timed turns. The ball then tells you if you're coordinated about the normal axis. So in essence the TC gives you a little bit of attitude info as far as bank angle goes where a slip skid indicator does not.
With a slip skid indicator, all you have for info is rate of turn. This makes it far more difficult to detect your bank angle while bouncing along in the clouds. If you start to bank it will not immediately register until you have a bank angle that gives a rate of turn that is significant enough to register. This can make it far more difficult to maintain wings level and prevent heading from drifting. Obviously the ball gives the same coordination info as far as being in a slip or skid..
So rate of roll is great on a TC in that the instrument can tell you quickly "hey buddy you're banking" before it becomes an appreciable bank angle affecting your heading change (rate of turn).
Hope this helps.
One of the most difficult things partial panel in the 172 with the G1000 was that all we had was a standby attitude indicator with no ball. So we could hold wings level all day, but depending on power and configuration and how the fixed rudder trim tab was tweaked you could have a very slow rate of turn and the quickest way to see it was with the airplane on the moving map with the GPS.
With a slip skid indicator, all you have for info is rate of turn. This makes it far more difficult to detect your bank angle while bouncing along in the clouds. If you start to bank it will not immediately register until you have a bank angle that gives a rate of turn that is significant enough to register. This can make it far more difficult to maintain wings level and prevent heading from drifting. Obviously the ball gives the same coordination info as far as being in a slip or skid..
So rate of roll is great on a TC in that the instrument can tell you quickly "hey buddy you're banking" before it becomes an appreciable bank angle affecting your heading change (rate of turn).
Hope this helps.
One of the most difficult things partial panel in the 172 with the G1000 was that all we had was a standby attitude indicator with no ball. So we could hold wings level all day, but depending on power and configuration and how the fixed rudder trim tab was tweaked you could have a very slow rate of turn and the quickest way to see it was with the airplane on the moving map with the GPS.
