Hi!

Today i was flying my 450L, with red spirit. I powered on the heli on the ground, let it initialize, after that put the canopy on, without lifting the heli up, just the tail moved.

I was practising overspeeds, and it involved a lots of nose down diving, without stick movement. After 2-3 minutes, i tried if Rescue was working, and it sent my heli toward the ground in about 20-30 degrees angle. Fortunately I was high enough to save the heli myself. After this, i went higher, and tried it again, same thing, but at least the angle was better XD.

The piruette optimization is good, i checked it home. This is my 3rd Spirit unit.
After landing, put another battery in, and go flying, same practice, and tried rescue after 1 minute, and it was like 45 degrees but up. I continued flying, and as i was practising this diving the rescue get worse. I can reproduce it at will.
In normal flight, like loops, rools, tic toc, aileron tic toc etc rescue is always works very well.

I think when no stick input (nose down diving high speed) the spirit thinks he is level, and adjusting it's virtual horizont to that diving position

I immediately landed, ant tried rescue on the ground, made a video of it. Here it is:

https://www.youtube.com/watch?v=Khi0w5mt4CY

I think this practise is not "normal use" so i'm writing this because it maybe helps the spirit team to make better rescue firmwares in the future

From my research, if rescue is getting worse during flight, it's usually a vibration issue. Check tail vibes first on the bench. For me, piro flips always causes one of my helis to throw off Spirit's rescue.

Hi,

if you are not spending in vertical flight too much time (1-2 minutes), then it shouldn't be a problem.
If you can observe some slight inclination during some 3D it is indication that something is not OK and this could confuse unit during high G manouvers.

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Spirit System developer