Heading & Flight Dynamics vs. Spinning, Wind & Turbulence

[Volk.]

Next one's up.

 

 

Hope this covers everything on why your Shark isn't pointing where you expected.

 

2k version should become available shortly once YT has done its conversions.

[Taz1004]

Very helpful. Your editing and narration seems to be getting better too.

 

One thing I noticed with strong wind is that rudder alone is not enough to keep it from rotating. I have to pitch or bank towards the wind. But if I'm tilted and then use the rudder, does some funky things. In this situation where you use rudder while you're banked, is the rudder rotating you relative to the ground plane or relative to your helicopter?

[Volk.]

Thanks. This vid also had less in-depth stuff to cover, so I could space it out more.

 

You'll need Pitch & Bank tilting you down into the wind direction to avoid it pushing you (in terms of the point on the ground you're trying to hover over). But for strong wind you absolutely need rudder - heading hold channel (and by extension all autopilot modes) just won't have enough authority. Typically the ruddering is in the opposite direction you're banking into. So usually wind from your right, means level pitch, but banking left to stop it pushing you right, and then right rudder to avoid the Black Shark's nose wanting to yaw left into the oncoming wind.

Your rudder and all other flight controls would always be relative to your airframe, so banking 45 degrees left with level pitch, the left rudder would yaw you somewhere between left and down (probably in equal measure), which would of course also turn your pitch down as your nose starts pointing to the ground. Right rudder would turn you skywards slightly as you yaw right so you'd pitch up. Of course the pitch up motion would also leave your rotors tilted more rearwards and give you slight backwards motion (or at least slowing forward motion).

[Taz1004]

Thanks for clarifying that. That's what I usually have issues in high wind. I manually hover by banking/pitching and rudder. And then if I use auto turn to target, it rotates either towards the ground or skyward and screws up my hover. So I try not to use auto turn in high wind but is there better way?

[Volk.]

In high wind,somewhere between I think 20 & 40 metres per second, if you're not facing the wind direction, then all bets are off with autopilot modes - their ~20% control authority just isn't enough to fight the wind. Manual cyclic & rudder will then be the better way and the only way. You can trim the cyclic and hold a steady rudder once you feel out the right direction (or use rudder trim), but even then you may still be losing ground from getting pushed slightly or losing your angle on the target, so you'll likely need to be less aggressive with hugging nap of the earth and dangerous obstacles in high wind.