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HomeAircraftHelicopterRadio - Servo - Gyro - Gov - Batt › "Pilot authority mixing" - what does that mean ?
02-03-2010 07:12 AM  8 years agoPost 1
klauskolb

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Germany

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Hi,

I am from Germany and this is my first post in this forum

Can anybody explain to me the meaning of "pilot authority mixing" ?

It would be nice, if You would use simple words.

Thanks.

Klaus

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02-03-2010 07:30 AM  8 years agoPost 2
GimbalFan (RIP)

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Big Coppitt Key, FL

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I've never seen that term in any of the manuals for any of the radio or avionics gear I've used over the years.

A Google search seems to indicate it has something to do with programming a radio's control of a heli's tailrotor when using a gyro (almost always used these days) -- which likely means it has to do with being sure you DON'T use any collective- or throttle-to-rudder mixing -- a mostly obsolete radio function from the early days of RC helis, before effective gyros became available.

CSM is a gyro manufacturer who apparently uses that term in their manuals.

What heli, radio and gyro are you using? Where did you see that term?

op-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-t

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02-03-2010 09:52 AM  8 years agoPost 3
klauskolb

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Germany

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Hello,

thanks for Your answer.

I found the expression in the manual of the new Align 3G Flybarless System.

Possibly it has something to do with a trainersystem, master-slave for education with 2 transmitters ?

Bye

Klaus

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02-03-2010 10:05 AM  8 years agoPost 4
GimbalFan (RIP)

rrProfessor

Big Coppitt Key, FL

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Since it mentions mixing I doubt it has to do with training modes, but that one is past my understanding. Others will surely chime in.

You may want to repost your question in the FBL forum here.

op-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-t

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02-04-2010 07:14 AM  8 years agoPost 5
klauskolb

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Germany

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Hi,

nobody else ? Come on

Bye

Klaus

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02-04-2010 04:58 PM  8 years agoPost 6
heliguy

rrVeteran

Boulder, CO

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Pilot authority mixing is a term used by CSM in their Gyro setup.

With "pilot authority mixing", the rudder channel output is mixed into the gyro gain channel to reduce the gain of the gyro when your rudder channel moves off center.

I do not know of a radio which has built in "pilot authority mixing" but in your FBL head setup they are basically stating that any mixing into the rudder or gyro should be disabled.

Al

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02-05-2010 06:52 AM  8 years agoPost 7
klauskolb

rrNovice

Germany

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Hi heliguy,

thank You very much

Bye

Klaus

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03-03-2010 08:01 AM  8 years agoPost 8
Helo Controls

rrNovice

San Diego, CA - USA

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... which likely means it has to do with being sure you DON'T use any collective- or throttle-to-rudder mixing -- a mostly obsolete radio function from the early days of RC helis, before effective gyros became available.
While the collective to rudder mix is considered an obsolete radio function, it is actually a very useful crossfeed term if implemented within the control system itself, allowing anticipatory rudder corrections to be applied before yaw rate errors are even sensed. In military helicopters, such as the UH-60 Black Hawk, for example, there is actually a mechanical mix between the collective and rudder, in addition to the electronic stability augmentation systems. The reason it has gone obsolete in the radios is primarily because standalone heading-hold gyros will misinterpret the rudder mix as a yaw rate command, and send the helicopter into an unintended pirouette. By applying the mix within a hybrid gyro / governor control system, it is possible to implement throttle-to-rudder mixing within a heading-hold AVCS architecture.

Helo Controls
Specializing in High Performance R/C Class Flight Control Systems

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