labbadabba
Pattern Altitude
I'm a PPL who's reading up on my stuff getting ready to take the IR leap. One thing that baffled me when studying for my PPL (but didn't bother me since I never used one in my primary training) was the HSI.
Not the concept per se, I think it's an intuitive instrument on the front end. It's the guts of how it works and how it slaves to the flux gate makes my brain mushy.
So, with a HSI there is typically a remote compass controller on the panel. Is that controller supposed to indicate magnetic variation? Should it be set on '0' at all times? Do we use it to correct the HSI like we correct precession on a DG? Or should it reflect what we see indicated on the isogonic lines on our sectionals? Do slaved HSI's automatically correct for precession if they're slaved?
Is there ever a time (provided that the remote compass/flux gate is functioning) when you would set the HSI to 'Free Gyro' mode?
You see? Total mush up in here...
Not the concept per se, I think it's an intuitive instrument on the front end. It's the guts of how it works and how it slaves to the flux gate makes my brain mushy.
So, with a HSI there is typically a remote compass controller on the panel. Is that controller supposed to indicate magnetic variation? Should it be set on '0' at all times? Do we use it to correct the HSI like we correct precession on a DG? Or should it reflect what we see indicated on the isogonic lines on our sectionals? Do slaved HSI's automatically correct for precession if they're slaved?
Is there ever a time (provided that the remote compass/flux gate is functioning) when you would set the HSI to 'Free Gyro' mode?
You see? Total mush up in here...