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Anti Gravity setting


ernes.navarro
(@ernes-navarro)
Active Member Customer
Joined: 2 years ago
Posts: 4
Topic starter  

Hi!! Are you planning to add a new setting similar to Anti Gravity/ lightness witch is in other fbl brands?
    I think it’s a really good help in micro or mini Helis. 

    Thanks and congratulations for your work! 🙋🏻‍♂️Msh brain fan!


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BrainDev
(@customercare)
Member Admin
Joined: 3 years ago
Posts: 638
 

The Antigravity function recently added by a well known brand of control units does nothing more than modify the shape of the pitch curve received from the transmitter by transforming it from a straight line ranging from +100% to -100% into a rounded curve that reduces the pitch movement excursion in the lower part of the curve in order to reduce the collective pitch movements in the area typically used for hovering.
Extremely simple and trivial, also because with most modern transmitters it is possible to draw such a collective pitch curve directly in the transmitter.

This feature is already present since ever and since the first Brain controllers were released ten years ago:

Going to the ADVANCED section, Setup tab, Input under "Pitch Exponential" it is possible to introduce exponential curves for positive (normal flight) and negative collective pitch commands (inverted flight) with three equal or three different values for each of the three different setups. This for all kind of radios also for those where it is not possible to create several rounded pitch curves that can be unlinked by a switch.


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andyoleary
(@andyoleary)
Estimable Member Customer
Joined: 2 years ago
Posts: 115
 

Hi Rick, sorry to jump in here.  I have no personal interest in this "anti-gravity" function, nor do I think it is a particularly good thing in general for the RC heli hobby as it is a level of "autonomous flight" that could potentially hinder the hobby's efforts to stay separate from increased regulation by aviation authorities etc.....for good reason, it is not permitted in a competition environment at least.

Anyway, with that said, as I understand it pitch expo is not quite the same thing.  I cannot speak for what Spirit have done (I'm not convinced it operates the same as Mikado's process from what I've seen) but the Neo's anti-grav function takes into account the position of the heli in relation to horizontal.  So, when upright, a positive pitch offset is at a max value, and when inverted, a negative pitch offset is at a max value.  When the disc is vertical (knife-edge), there is no pitch offset introduced.  So, there is some feedback loop from the accelerometers/gyros somehow, which affects the level of the offset introduced.  Just fyi, in case you were considering implementing such a feature for micro helis (I see no point in this for 500+ size helis to be honest).  

Just my thoughts.....


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Jimmy
(@jimm-y)
Active Member Customer
Joined: 4 months ago
Posts: 4
 
Posted by: @customercare

The Antigravity function recently added by a well known brand of control units does nothing more than modify the shape of the pitch curve received from the transmitter by transforming it from a straight line ranging from +100% to -100% into a rounded curve that reduces the pitch movement excursion in the lower part of the curve in order to reduce the collective pitch movements in the area typically used for hovering.
Extremely simple and trivial, also because with most modern transmitters it is possible to draw such a collective pitch curve directly in the transmitter.

This feature is already present since ever and since the first Brain controllers were released ten years ago:

Going to the ADVANCED section, Setup tab, Input under "Pitch Exponential" it is possible to introduce exponential curves for positive (normal flight) and negative collective pitch commands (inverted flight) with three equal or three different values for each of the three different setups. This for all kind of radios also for those where it is not possible to create several rounded pitch curves that can be unlinked by a switch.

Friend of mines been talking about Anti Gravity and got me interested then reading this I've just finished setting up my Align 470 and will have a spare Bank which I could experiment Pitch Exponential and be interested if anyone has tried it out on the heli.


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