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Rotor LIB breaks helicopter physx
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With rotor lib enabled on my custom helicopter, it sinks into the water.

With rotor lib disabled, it floats like a regular physx object should.


Legacy ID
Have Not Tried
Advanced Flight Model

Event Timeline

dezkit edited Steps To Reproduce. (Show Details)Aug 4 2014, 11:04 PM
dezkit edited Additional Information. (Show Details)
dezkit set Category to Advanced Flight Model.
dezkit set Reproducibility to Have Not Tried.
dezkit set Severity to None.
dezkit set Resolution to Open.
dezkit set Legacy ID to 1555441193.May 7 2016, 7:09 PM
Bohemia added a subscriber: AD2001.Aug 4 2014, 11:04 PM
dezkit added a subscriber: dezkit.May 7 2016, 7:09 PM
dezkit added a comment.Aug 6 2014, 4:47 AM

issue not yet resolved

Badlego added a subscriber: Badlego.May 7 2016, 7:09 PM

Did you try it with different landing gear positions? I have seen that the ghost hawk sinks into solid ground when i forget to put the gears out.

I'm not understanding the issue...with phsyx enabled..the helo sinks into the water...which helicopters do when submerged...they don't float. When physx is doesn't sink in the water....which kinda makes sense since you just turned off physx. What are you looking to see happen when you drop a helo into the water?

dezkit added a comment.Aug 7 2014, 5:31 PM

I have my own addon. See

The rescue variant has floats and can float on water without sinking.

However, as soon as I turn on the advanced flight model, the helicopter stops floating.

LupusTheCanine added a subscriber: LupusTheCanine.EditedOct 4 2021, 12:31 AM

Can confirm still not resolved, helicopters in advanced flight mode sink while in standard they can somewhat (collective a bit bellow neutral) float.

It feels like if the water was sucking the helicopter in.
Maybe buoyancy force is inverted in RotorLib?