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The Helicopter Gyro. As I do not have a photo of a gyro to talk about so I have revised a line art drawing to illustrate the effect the gyro has on the helicopter. There are individuals who did learn to fly without a gyro years ago before early mechanical gyros were introduced. Today, the gyro represents one of the two components that has benefited the greatest from advances in technology, the other is the radio. Absolutely have one. The gyro is a feedback device that assists in the control of the rudder servo. This will measure a force applied to the tail and either stop the tail from rotating or return it to its origin. |
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To look at the tail rotor from a different perspective, the right thrust generated is acting as an anti-torque device that is keeping tail
stationary while that main rotor disk rotates clockwise. The gyro connects
to the rudder servo and senses rotational motion, now we must
consider into two two different technologyies, rate piezo gyro and heading
hold/lock gyro. There is a difference of opinion for beginners
learning from the start with a heading hold gyro, yet in the long run
these are really fantastic devices.
The rate piezo gyro will sense a force being applied to the helicopter and continue to add opposite input until the rotation is halted, this generally will result with the tail in a different location that when the force was applied. The nature of a rate gyro will dampen external force, wind but will also dampen your input from the radio. Essentially, the higher the gain setting the tail will hold in a stronger wind with the penalty that as you deflect the rudder stick the maximum rotational speed is also reduced. The heading lock or hold gyro (HH) uses software built on the same piezo technology but reacts to the external force and will return the tail to the exact position it started. For example, if the tail is pointing due south and a crosswind gust picks up the tail will have no tendency to move. By comparison, the HH puts additional stress on the tail control system and there are other new factors to learn but in the long run this is the best product to buy. |
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