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1.56 issues
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efpg0708



Joined: 21 Jan 2015
Posts: 157

PostPosted: Mon May 25, 2015 11:16 pm    Post subject: 1.56 issues Reply with quote

Hi Mark and Steve

I have just installed the update to version 1.56 and I'm having the following issues:

.FD bar still impossible to follow (vertical mode bar)
.Aircraft too powerfull when taxing. With 24% of N1 I have to step on the brakes to avoid going faster than 20 knots.
.Aircraft too sensible to commands (aileron and elevator) when compared to the previous version.

Thanks

Eduardo
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MarkHastings



Joined: 18 Jan 2006
Posts: 953
Location: UK

PostPosted: Wed May 27, 2015 5:24 am    Post subject: Reply with quote

Hi,

The sensitivity of the Ail and Elev haven't been changed, so I would start by double checking your FSUIPC calibrations.
FS has a tendency to 'dumb down' the big jets to make them feel big and heavy, whereas in reality they are quite agile.
I don't fly 777 's in the real world, so my experiences come from flying the full motion sims and feedback from real 777 pilots...
They all talk about how they tend to fly with their finger tips.. very little yoke movement is used for general flying.

Regarding taxing, once the aircraft is rolling a lot of taxing is done on idle.
What aprx is your usual Gross Weight for takeoff ?

Regarding the FD bar, it would be worth trying the changes mentioned in http://www.flightdecksolutions.com/forum/viewtopic.php?t=5232 to see if this helps.
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Jetcos



Joined: 30 Sep 2005
Posts: 1248
Location: Newmarket,Ontario

PostPosted: Sun May 31, 2015 5:01 pm    Post subject: Reply with quote

I am flying 1.56 at the shop with a B737 FBPT that will be shipping this week. All working fine, I do find a few things that create issues when flying with real weather. Strong winds etc. Otherwise all good.

Make sure you have the latest Aircraft Server file installed.
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Steve Cos
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MichaelYSSY



Joined: 06 Jan 2015
Posts: 694
Location: Sydney - Australia

PostPosted: Mon Jun 01, 2015 1:22 am    Post subject: Reply with quote

Yes Steve I somehow think weather makes some issues too.

Confused
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MichaelYSSY



Joined: 06 Jan 2015
Posts: 694
Location: Sydney - Australia

PostPosted: Mon Jun 01, 2015 8:05 pm    Post subject: Reply with quote

Steve
I too am flying the 737 (Jetmax SKTQ, SimA 1.56, all the AC files installed as instructed.

In CLIMB my verticall FD bar is erratic as described by this post.
At 30k feet or (cruise alt is 35-37k set on MCP)so the AC AP starts goin haywire, reducing and increasing VS even going into descent (VNAV mode) changing to LVCHG mode prior to 30k feet helps but FD Bar dances just the same.

You and I appear to be using the same hardware and version and same software, you're not having any erratic FD Bar issues on your setup and my one dances like a jack rabbit so this must be something other than SimA version or setup?
Maybe my PC, MFS, or PC CONFIG. not sure where to start.

Just to be clear, it's only on climb, from liftoff to cruise ALT that the FD Bar dances around. Cruise and Descent it's rock SOLID. NO PROBLEMS.

I tried a few AP Setting changes that Mark suggested but they only made things worse so I changed them back.

Any thoughts where I might start to look?
I am happy with the way the AC TAXI and speed and I have no issues with sensitivity of AC Controls if they are based on realism, all the better Smile


Thank you
Michael
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glex9078



Joined: 23 Jul 2013
Posts: 79
Location: Utah - USA

PostPosted: Mon Jun 01, 2015 9:31 pm    Post subject: Reply with quote

Michael,

I have the same FD issue. Thankfully no AP problems. A temporary fix is to select VS during your climb. This will eliminate the mis-behaving FD.

John
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MichaelYSSY



Joined: 06 Jan 2015
Posts: 694
Location: Sydney - Australia

PostPosted: Tue Jun 02, 2015 12:25 am    Post subject: Reply with quote

Hi John

Yes, of course VS is another option. I have tended to stay toward more automated modes (I pretty much input all my flights into CDU/FMS) and it's easier to manage height restrictions and speeds at take off and initial climbout when things happen quickly.

Thank you John I now have another option.
Ill see what the FD bar does on VS, might give some clues on the cause?

Cheers
Michael
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MichaelYSSY



Joined: 06 Jan 2015
Posts: 694
Location: Sydney - Australia

PostPosted: Tue Jun 02, 2015 1:43 am    Post subject: Reply with quote

Okay, just did another flight, this time I turned off all the weather, lower and upper winds off.

Wind Calm - Sky Clear

And this made no difference to my FD Bar and overspeed issues.

I did pay a bit more attention though and can confirm the following
Flight Planned in CDU - VNAV selected for guidance during TO
(I normally hand fly the aircraft until flaps are retracted and then turn on AP with VNAV and LNAV).

The Vertical FD bar stayed steady on initial takeoff and Climb out
The Vertical FD bar started fluctuating once the AP was selected CMD
My issue at 30k feet occurred again - even with nil wind and weather
LVL CHG helps my Overspeed issue but FD bar fluctuations continue.

If AP is Disengaged - the bar stops fluctuating

I think the weather does increase the effect on the FD bar fluctuations but am now starting to think that it's not the cause.

The dancing FD Bar I can live with.
The Overspeed, I can overcome.
So I think I'll just get on with flying and try real hard to forget that niggling that keeps asking me "why"


Wink

Michael
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Jetcos



Joined: 30 Sep 2005
Posts: 1248
Location: Newmarket,Ontario

PostPosted: Tue Jun 02, 2015 7:08 am    Post subject: Reply with quote

Take a look your Airline Policy settings.

Airline policy parameters on the CDU (FMC- Index - Maint - Airline Policy)

Mine are:

Derate1 5%
Derate2 15%
GA 0%
Con 5%
CRZ 2%
TRANS ALT 18000
THR RDUCT ALT 1500
ACCEL ALT 1000


I have been looking at another set up and there was a difference.
Report your numbers here. If they are different then change them to what I have above and fly.

Thanks,

Steve
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MarkHastings



Joined: 18 Jan 2006
Posts: 953
Location: UK

PostPosted: Tue Jun 02, 2015 11:15 am    Post subject: Reply with quote

Have you tried the AP adjustments mentioned here :
http://www.flightdecksolutions.com/forum/viewtopic.php?t=5232

Does that stabilise the actual AP ?

If that doesn't help, can you tell me if the FD is stable in climb when you disengage the AP. ?

The FD has a different response time when the AP is disengaged.
It may be that I'll need to make the "AP engaged" FD response time customisable so that its possible to adjust the tuning to each specific system.
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MichaelYSSY



Joined: 06 Jan 2015
Posts: 694
Location: Sydney - Australia

PostPosted: Tue Jun 02, 2015 3:21 pm    Post subject: Reply with quote

Steve

I will look at those numbers today and will report back.
I do know that my Trans Alt is 10000 but the others I haven't checked for a while.

If there are any differences I will change them to yours, test fly and report back.


Thank You Steve

Cheers
Michael
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MichaelYSSY



Joined: 06 Jan 2015
Posts: 694
Location: Sydney - Australia

PostPosted: Tue Jun 02, 2015 3:29 pm    Post subject: Reply with quote

Mark

Yes I have tried the AP Adjustments from that link.
No that didn't stabilise the AP, it make the AP more unstable and didn't have any effect on the FD.

Yes the FD is stable in climb when AP is Disengaged.
FD is Stable on initial climb before AP is engaged
Fluctuations start as soon as AP is engaged in VNAV or LVL CHG modes
If you Disengage AP at anytime during climb the FD stabilizes straight away

The FD is STABLE in CRZ and DESCENT, no problems there.

Thank you Mark
Hope you are enjoying your holiday, this can wait till you get back.
In the mean time I will try a few things Steve has suggested.

Cheers
Michael
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Jetcos



Joined: 30 Sep 2005
Posts: 1248
Location: Newmarket,Ontario

PostPosted: Tue Jun 02, 2015 4:58 pm    Post subject: Reply with quote

Transistion ALT would be country specific so leave it to what you need. It won't change much in what we are testing. Check the rest.
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MichaelYSSY



Joined: 06 Jan 2015
Posts: 694
Location: Sydney - Australia

PostPosted: Tue Jun 02, 2015 9:06 pm    Post subject: Reply with quote

Steve

Checked my Airline Policy Settings

My settings are all the same as yours except for TRANS ALT mine is 10000 yours 18000 as you said, this should have no bearing on this issue.

Cheers
Michael
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Jetcos



Joined: 30 Sep 2005
Posts: 1248
Location: Newmarket,Ontario

PostPosted: Sun Jun 07, 2015 3:54 pm    Post subject: Updated Information 1.56 Reply with quote

The following were used to fine tune some setups:

With the A/P and Overspeed issue. It seemed like the Cost Index had an affect.
Using 250 as a Cost Index input and input of 0 stopped my problem.

Changing my CI from 250 to 0 changed the climb profile.

Although everyone wants to be as realistic as possible the use of real airline CI numbers may create issues. I use 100 for my CI when flying. (SC)

250 = 320/0.79 climb
0= 265/0.79 climb

Also with the Aircraft files available
The FD vertical movements were much less
Engine N1 needles stabilized.


1) Make sure you have the Sim-A B737 installed

2) The latest FSX/P3D Aircraft Config file installed (Disclaimer: Caution if you have any eyepoints set in your visual systems, they may change)

3) Install the latest Sim-A Server Config file (During the install of the update always select "Update Aircraft Autopilot in Existing Server Aircraft Configuration Files") This will change any changes you may have made to the A/P settings.
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