The following method for accurately measuring helicopter main rotor blade pitch uses AeroPerfect's new MU-9000X USB HELI precision helicopter angle measurement system.
Always follow your helicopter's manual regarding SAFETY and setup instructions!
Method For Making Accurate Blade Pitch Measurements
(Refer to Photos Below)
Set a zero degree reference on your heli's tail boom using Axis 2. Adjust your flybar to be parallel with your heli's tail boom using Axis 2. Using Axis 3, set a zero degree reference on the flybar in preparation for blade pitch measurements. Set your pitch gauge to zero and tighten the set screw. Clamp the measurement plate of the MU-9000X USB HELI to your pitch gauge. The zero reference angle you obtained from your flybar is now transferred to the pitch gauge. Blade pitch can now be read directly from the computer screen. Refer to photo below where collective Pitch has been set to +/- 6.5 Degrees. |
(Click Thumbnails for Larger Picture) |
(Turn off Pop-up Blocking) |
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Set A Zero
Degree Reference
On Tail Boom |
|
 |
Adjust Flybar
To Be Parallel
With Tail Boom |
|
 |
Set Zero Degree
Reference Axis 3
Preparing For Blade Pitch |
|
(Click Thumbnails for Larger Picture) |
(Turn off Pop-up Blocking) |
 |
Zero Reference
Transferred To
Pitch Gauge |
|
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Setting Collective Pitch
To 6.5 Degrees (Axis 3) |
|
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Setting Collective Pitch
To -6.5 Degrees (Axis 3) |
|
(Click Thumbnail for Animation) |
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Blade Pitch Animation
Large Digit View
Axis 3 |
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HAPPY FLYING!
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