View Full Version : What does 'Gain' mean on a Gyro

09-05-2009, 06:34 PM
I have a Esky rate gyro and what does gain mean, my helicopters tail is drifting left slightly, so do i turn the gain right??

Thanks in advance

09-06-2009, 12:50 AM
"Gain" means amplification or attenuation of signal.

A Gyro's signal is how much it's rotating.

The result is as you turn the "gain" up on a rate only gyro the heli will begin to fight harder to keep the tail straight when it is being blown around.

Rate only gyro's do not compensate for continuous minor drifting like winds.

A rate only gyro will always have a slight bit of drift.

Rate gyro's are proportional only controllers meaning they are governed by:

Control = gain * error

where error is any observed deviation from zero rotation.

When this value is set right the helicopter will stop any rotating movement not intended, when this value is set too high the helicopter will occilate, when this value is set too low the helicopter tail will feel like it's "slipping" all the time.