blott
test
- Joined
- Jan 29, 2003
- Posts
- 259
I was sittin there waitin for the pax to load up when a guy poked his head in and asked if I had time for a question-I said sure.
next he asks me if I know about coriolis effect... I said I was familiar with it.
Next he asks me how & how often the FMS corrects for it?
Right?
I had a little time so I told him to check this out... The FMS actually flies a great circle route-if going direct, using GPS, vor/vor,ins to update the position. So it continually corrects for coriolis....(BS, but so what)
next, I asked him if he knew what a attitude indicator was-pointing to it. he said yes.(obvious student pilot) I then told him it was totally electronic with no moving parts-he said what? Then I told him it has 3 ring laser gyros-that actually compute which way is up using coriolis effect...he just blinked at me-I then told him that I input the latitude of the aircraft when I power it up-and it, in turn, knows how much coriolis effect there is for the corresponding latitude and it measures the angular acceleration to provide my heading and attitude....(I moved my hands around like I was demonstrating something the whole time) Then i said "you don't want to know what happens if I have to reset the damn thing in flight..."
Then I just sat there looking at him. He looked confused and walked back to his seat.
next he asks me if I know about coriolis effect... I said I was familiar with it.
Next he asks me how & how often the FMS corrects for it?
Right?
I had a little time so I told him to check this out... The FMS actually flies a great circle route-if going direct, using GPS, vor/vor,ins to update the position. So it continually corrects for coriolis....(BS, but so what)
next, I asked him if he knew what a attitude indicator was-pointing to it. he said yes.(obvious student pilot) I then told him it was totally electronic with no moving parts-he said what? Then I told him it has 3 ring laser gyros-that actually compute which way is up using coriolis effect...he just blinked at me-I then told him that I input the latitude of the aircraft when I power it up-and it, in turn, knows how much coriolis effect there is for the corresponding latitude and it measures the angular acceleration to provide my heading and attitude....(I moved my hands around like I was demonstrating something the whole time) Then i said "you don't want to know what happens if I have to reset the damn thing in flight..."
Then I just sat there looking at him. He looked confused and walked back to his seat.
