[WAITING UPDATE] Pitch Control

[Scandfox]

In  T/O and landing above 60 kts You can lift Nose and in landing You can use Aerodynamic brake down to 53 kts. This strange Pitch Control came with last update. Pitch Control airborne has excessive power compare to Roll and Rudder so pls change back to normal behavior as before this Update. Perhaps its just misalignment of CG

Edited July 24, 2022 by Scandfox
Picture add

[myHelljumper]

Hi,

Pitch authority in the Mirage is quite high and from what we know, it can keep the nose up at low speed due to the position of the main landing gear, center of lift and center of gravity .

We have a big update to the FM and CDVE planned so let's wait for it before going further on this issue.

Thanks.

Edited August 10, 2022 by myHelljumper

[Scandfox]

In last update the plane behaves much better...THANKS

[broderbund67]

Hi, 

Are we still waiting on an update for this one or was it resolved? I still find the pitch to be very twitchy during take off and aerobraking. 

Thanks!

[Akiazusa]

10 hours ago, broderbund67 said:

Hi, 

Are we still waiting on an update for this one or was it resolved? I still find the pitch to be very twitchy during take off and aerobraking. 

Thanks!

Hi,just trying to help.  Based on my personal observation.

I think the FBW pitch will change from ground logic to flight logic when the noise wheel is lift off. When the FBW is in ground logic,it'is very sensitive,the control surfaces will reach their full limit even with just a very small control input. So before the noise wheel is lift off,you pull the control back a little,but the FBW in ground logic will deflect control surface to their full limit. As a result,the initial rotation rate will be very high if you pull the stick too late above the calculated VR. And this may surprise you, so you may push the stick. After the FBW change to the flight logic,it will try to maintain your AOA,so it will automatically adjust the control surface to hold your initial rotation attitude if you just keep your stick there.  If you push the stick too much now,it will be FBW command correction plus your manual correction,double correction,then you are doomed...

TL/DR

1.The FBW will change from ground logic to flight logic when the noise wheel is lift off, in the ground logic the control is very sensitive

2. rotate at the right rotation speed,too late is not good,the initial rotation rate could be very high if you rotate above Vr,

3.after noise wheel is lift off,just hold your control stick their,only make tiny correction,don't push the stick too much if the rotation rate surprise you,the FBW will handle that as soon as it switch to the flight logic

Edited February 1, 2023 by Akiazusa

[Galinette]

Ground logic has AoA control as well, not direct input.

You can see this when (real) aircraft take off : elevons are very actively reacting to every minor bump.

Also, it is required to avoid a backflip due to the especially unstable nature of the aircraft when pitched up on its main wheels, the wing area and shape favoring a lot ground effect.

Knowing this, take off and landing become easier : people tend to overcorrect a lot thinking they are the control loop.

[broderbund67]

11 hours ago, Akiazusa said:

Hi,just trying to help.  Based on my personal observation.

I think the FBW pitch will change from ground logic to flight logic when the noise wheel is lift off. When the FBW is in ground logic,it'is very sensitive,the control surfaces will reach their full limit even with just a very small control input. So before the noise wheel is lift off,you pull the control back a little,but the FBW in ground logic will deflect control surface to their full limit. As a result,the initial rotation rate will be very high if you pull the stick too late above the calculated VR. And this may surprise you, so you may push the stick. After the FBW change to the flight logic,it will try to maintain your AOA,so it will automatically adjust the control surface to hold your initial rotation attitude if you just keep your stick there.  If you push the stick too much now,it will be FBW command correction plus your manual correction,double correction,then you are doomed...

TL/DR

1.The FBW will change from ground logic to flight logic when the noise wheel is lift off, in the ground logic the control is very sensitive

2. rotate at the right rotation speed,too late is not good,the initial rotation rate could be very high if you rotate above Vr,

3.after noise wheel is lift off,just hold your control stick their,only make tiny correction,don't push the stick too much if the rotation rate surprise you,the FBW will handle that as soon as it switch to the flight logic

 

Thanks, that's a great explanation! I'll keep practicing