Aircraft-Helicopter (vertical engine: -89 degrees) climbing up when releasing throttle

[MSFS 2020] Questions & Community Discussions Aircraft
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1

Hello, https://youtu.be/PjXyHkcsOiU In the previous versions before updates,
i could solve this issue while lowering wings surface aera. Now, i tried
everything to avoid this climbing effect when releasing throttle, in vain.
The same effect happens when speed grows up. That only happens with engine
angle (for helico) between -60 ?, around -90 degrees.

2

I would suggest to wait until helicopters are properly supported which is
coming very soon as I understand. If you don’t want to wait, you will need to
write custom flight physics via external means, just like the HPG group has
been doing for their helis… Best, Raul

3

Thanks for your reply. I adjusted IDLE parameters to minimize the issue BUT i
realize that changing the value via the EDITOR deletes those lines !
https://youtu.be/YOpLy5_kWQw

4

Sorry, not the good video, watch this one: https://youtu.be/mGGngNx_Ng4

5

I lowered Prop Mod Lift Slope CF, it seems OK.

6

I think the issue comes from a too short distance between wings and elevators.
I post another video link, not for my helico but for the landscape i’ve been
flying over. https://youtu.be/gaysH86n03I

7

For the sounds: https://youtu.be/dQnuhbOOLOg Sometimes, i am surprised with
CG position and aerocenter value, it seems ok, and when relaunching from back
menu page, aircraft’s behaviour seems changed.

8

For those who want to try: https://youtu.be/y1QVEhXUX54 Link of download in
description.

9

I think setting tank and CG backwards, and so setting Aerocenter forward make
the aircraft easier to fly at low speed, decreasing stall speed ?

10

I confirm that playing with the 3 values: CG/Tank position and aerocenter, a
simple RESYNCH with the editor makes the aircraft behave a certain way. Then,
when going back to menu and reloading the complete aircraft project, the
airfraft BALANCE is changed. I need to ajust aerocenter TOWARDS. The simple
RESYNCH doesn’t seem to be enough to recalculate everything ? Other notice:
Setting the aerocenter towards lets the aircraft gain MAX SPEED, this is cool.

11

A few updates, i cleaned the propeller mesh. I know it s very simple, but it
flies.

12

A bad file Cruise.flt prevented the starter to work. I copied and pasted the
C152 Cruise.flt file.

13

Correction: prevented from working… Rudder meust be AUTO because i think
there is an issue with manual rudder and modern engine…