Square Nozzle

My Feedback: (1)

I'm considering putting a gyro on my nose wheel steering and I'm not convinced that it has to be at the CG as you would with a flight control gyro. I drew some diagrams to determine if location made a difference and I see no location that is better than another. If the nose wanders off heading, the gyro is still feeling rotation about its axis and should try to compensate back to the correct heading. Am I missing something?

KC36330

they don't go on the CG they go on the center of rotation, for nose steering the ideal location is over the main wheels.

Red B.

For gyros commonly used in R/C-aircraft and helis it does not matter where along the length axis of the aircraft it is located. You can position the gyro where it is convenient. Solid state gyros are not sensitive to translational motion, only rotation. When the aircraft is turning all parts of the aircraft rotate at the same rate.

drdoom

My Feedback: (9)

Centerline of rotation, the gyro needs to turn, NOT Swing.

mr_matt

My Feedback: (10)

For these (relatively, 10 years!) new piezo gyros, the translation motion is not critical (as the sensing members have almost no mass), so you can mount them virtually anywhere.

Red B.

My point was that swing doesn't matter for solid state gyros.

mr_matt

My Feedback: (10)

Sorry Red, did not see your post.

BTW, did some work years ago in Jonkoping for FMV and Luftfartsverket. Nice place, nice people.

Square Nozzle

My Feedback: (1)

Thanks guys. You have confirmed what I was thinking. I can't get the gyro on the rotational axis anyway. On the R54 the fuel tank pretty much consumes all the room that's available over the main gear.