A320 FMGS beta 30

[jeehell]

Hi Rob,

Yes in manual flight, the flare law commands a small pitch down action. This is intended to force the pilot to have a pitch up command on the stick just as he would on a conventional aircraft.

Regards
JL

[AirFan]

Hi JL,
thanks for you answer. It is indeed the real thing but I could imagine that this pitch down action is introduced more gentle/smooth so the pilot can really counteract by smoothly pulling the stick back.

As far as I know the flare mode the real ACFT remembers the pitch attitude at 50ft RA as a sort of reference attitude. So instead of g-load demand you command a delta pitch which returns to this reference pitch state if you have zero pitch stick input.
Do you agree?
Now, when passing 30ft the real ACFT smoothly goes down to -2 deg pitch att. This pitch down to -2deg happens over 8!!! seconds in the real aircraft. I did not take a stop watch but I have the impression that your FBW introduces the pitch down more rapidly or to a more negative alpha.
So all I want to say is that I have the feeling that your pitch down during flare seems a bit to quick/hard What do you think?

Rob

[SaschaM]

I did not take a stop watch but I have the impression that your FBW introduces the pitch down more rapidly or to a more negative alpha.
So all I want to say is that I have the feeling that your pitch down during flare seems a bit to quick/hard What do you think?

Rob

Hi All,

I have to same issue too. When I started to flare, the aircraft sets the Pitch Trim to maximum down in about 2 to 3 seconds. After that it's no more possible for me to land the aircraft even with the maximum deviation of the sidestick. This issue occured first as I updated to B30. Did I something do wrong with my config?
All in all it's a great A320 FMGS and it works without any problem except the mentioned issue.
Thanks for all the great work and support Jeehell!

Best wishes,
Sascha

[jeehell]

Hi

The pitch down is probably a bit too quick and too hard, but I never experienced a full down pitch trim?
I'll look at that later, I really am busy on the navdata right now...

JL

[AirFan]

Hi

The pitch down is probably a bit too quick and too hard, but I never experienced a full down pitch trim?
I'll look at that later, I really am busy on the navdata right now...

JL

@ I didnt experience a full pitchj down either... but as I said: I got the feeling that the aircraft derotates too quick. I just wanted to know your opinion about it and if you implemented the described behaviour Looking forward for the new nav system.

Thanks
Robert

[asessa]

Hi JL, i'm trying to program a route, from LIRN to LIME (Naples to Bergamo) and i've this message after i insert this data -> Airway: UM726 , TO VERUN , if i push on the LSK about VERUN point : "MCDU DISPLAY PROBLEM , PLEASE REPORT ISSUE". Could be a problem after i installed the new airac cycle?

[asessa]

Update : if i confirm FPLN (pushing on TMPY INSERT) i don't have the problem.

[jeehell]

I don't think so. Probably an FMGS bug.

JL

[asessa]

I don't think so. Probably an FMGS bug.

JL

In anycase, this was the first time i've that message.

[Miatanet]

Hi Jl,
since the update to v30 I have always problems to fill in the V2 in the MCDU on INIT B page. It always says "not allowed" when entering 139 for example, it does not accept anything.....
Do you have a clue?

Best regards

Stefan