ORIGINAL: ajcoholic
Craig,
No it doesnt. The gyros we used to use (mechanical, with an actual spinning mass) are free to move in one axis only. The newer piezo gyros with no "moving parts" also detect angular motion in one axis only as well. That why they have to be placed correctly, ie, for rudder, to sense a change in yaw.
I say it again, if you guys who dont believe me want to try it... take a gyro and servo. Hold the gyro in your hand and rotate it about the axis by turning your body. watch the servo. Now hold it out at arms length and spin your body around at the same rate and watch the servo - same thing.
Now, still holding the gyro, move it sideways back and forth, or fore and aft - being carefull not to apply any rotational motion. Move it fast, move it slow - the rudder servo stays put!
Translational (straight line motion) doesnt have any effect. Only angular/rotational movement does. Thats why these things work.
AJC
ps to see how this works you cant do much better than take an old mechanical gyro apart and see how the rotor sits, and how it is free to move, and then it is easier to understand IMO. A piezo gyro just isnt as good a learning tool.
Hi Andrew:
Please read the attached .pdf file regarding the ACT Fuzzy Pro Gyro: Page 5 (English)
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"English</span></div><div><span style="color: rgb(0, 0, 255); ">
FUZZY SMM</span></div><div><span style="color: rgb(0, 0, 255); ">
Instruction manual</span></div><div><span style="color: rgb(0, 0, 255); ">
Description</span></div><div><span style="color: rgb(0, 0, 255); ">
The FUZZY SMM is used for the stabilisation of model aircrafts. Its intelligent microprocessor</span></div><div><span style="color: rgb(0, 0, 255); ">
controlled electronics, coupled to a Piezo sensor, monitors the rotation of the model around the gyro/s</span></div><div><span style="color: rgb(0, 0, 255); ">
axis. The FUZZY SMM Gyro is specially designed to be used in an airplane with features airplane</span></div><div><span style="color: rgb(0, 0, 255); ">
flyers require.</span></div><div><span style="color: rgb(0, 0, 255); ">
The FUZZY SMM monitors all movements around it’s axis much faster than the pilot can, and</span></div><div><span style="color: rgb(0, 0, 255); ">
responds with different modes."</span></div>
I know that your conclusions are supported by the test you mentioned above but in this gyro type, doesn't it mean that if you place the gyro sensor in the nose of the plane, its rotational axis is different than that if you place the gyro near the plane yaw axis?
And BTW, the angular velocity is detected in AVCS mode only? (it do not detect angular acceleration??)
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