Project FMC simplified for Project Airbus

The320Pilot
Posts: 354
Joined: 29 Jul 2014, 22:47

Re: Project FMC simplified for Project Airbus

Post by The320Pilot »

Francois, I think the value min_ailerons_for_spoilerons should be changed from 12 to 4. The movement of the spoilerons seems more real when it is at 4, especially during take-off and landing. Why don't you give it a try to see how it looks?

Prosdocimo
Posts: 277
Joined: 10 Oct 2014, 12:05

Re: Project FMC simplified for Project Airbus

Post by Prosdocimo »

fdd_fr wrote:Beta A321 CFM FD-FMC online :


- Aircraft attitude maybe no perfect when level of : Maybe too much nose up.....same thing at cruise level and speed
Hi i found at FL350 and 0.78 M (always at standard weather conditions, 40% of total fuel), nose is around 0.5° higher than expected by FCOM. It should be around 1.8-2° but it's around 2.5. But if you don't want split hairs, i guess it could be ok anyway.

fdd_fr
Posts: 1764
Joined: 03 Jan 2012, 16:02

Re: Project FMC simplified for Project Airbus

Post by fdd_fr »

wulfbindewald wrote:
fdd_fr wrote:Beta A321 CFM FD-FMC:

Edit : And if you can give me some feedback from the new VC location ? I think that it is at the right longitudinal place, but maybe too high ....
A view comparison between A320_IAE and the current A321_CFM VC location shows, that the A321 VC can be vertically reduced by ~1.1 ft taking into account the A320 as reference (Real A320 and A321 vertical geometrical dimensions are identical).

For those who are interested to have an acceptable A321 VC view eyepoint should update the current view in the A321 aircraft.cfg as follows:

[views]
eyepoint=60.3, -2.0, 5.6

The vert. value 5.6 should be corrected as soon as an updated VC model is available. Assuming the VC will be lowered by 1.1 ft, then the new view eyepoint will be 60.3, -2.0, 4.5

Wulf

Hello Wulf,

Thanks for VC view point. As I use EZDOCK camera, I forgot to change VC view of the Aircraft.cfg !

About VC to much high, this is the disadvantage to change the VC mdl file location. When I move in one axis, it move in all axis; So, by move forward, VC moved up. But the elevation is very small and I think that the benefict to have the right longitudinal location is more important that the disadvantage to be upper.

Prosdocimo wrote:
Here my first test (*).
At FL350 cruise, N1 reading was around 70.9 and FCOM says N1 maximum shoudn't be over 82-84. So i guess it could be fine.

(*) for this test i used FSX "clear sky" weather, so standard conditions as pressure 1013, 15°C, no wind.

I agree. Actual AIR file for engine setting is not good. Too much thrust at IDLE and mid throttle. I am working hard to improve, but very difficult because engines use 5 complex tables in the AIR file to create the thrust curve according altitude (air pressure ratio), N1 and N2 speed.

see below actual setting of A321 engines in AIR file :
Record: 1501 Engine Turbine
FIELD 0x1501 0x0 DOUBLE 31990.000000 *Thrust - Static SL Reference (lbs)
FIELD 0x1501 0x8 DOUBLE 25.43750 *Intake Throat Area (sq. ft.)?
FIELD 0x1501 0x10 DOUBLE 0.002400 *Spool Up Rate
FIELD 0x1501 0x18 DOUBLE 15183.000000 *Turbine N2 Max RPM Reference
FIELD 0x1501 0x20 INT32 0 Afterburner
FIELD 0x1501 0x24 DOUBLE 1.000000 *Unknown6
FIELD 0x1501 0x2c DOUBLE 1.000000 *Unknown7

Record: 1502 Turbine CN1 vs CN2 and Mach No.
columns: 3 rows: 13
0.000000 0.000000 0.820000
0.000000 0.000000 0.000000
17.000000 0.000000 0.000000
20.000000 1.000000 1.000000
30.000000 3.000000 3.000000
40.000000 8.000000 8.000000
50.000000 13.00000 13.000000
57.800000 24.000000 24.000000
70.000000 35.000000 36.000000
80.000000 60.000000 61.000000
90.000000 84.000000 85.000000
97.500000 100.000000 100.000000
100.000000 105.00000 105.000000

Record: 1503 Turbine LoMach CN2 vs Throttle and Pressure Ratio
columns: 3 rows: 9
0.000000 1.000000 22.570000
0.000000 57.800000 66.884190
0.200000 71.010390 71.144540
0.400000 77.795580 77.670387
0.540000 82.969450 82.960000
0.700000 84.000504 84.990349
0.800000 91.243027 91.152473
0.900000 94.360000 94.360000
1.000000 100.00000 101.00000

Record: 1504 Turbine HiMach CN2 vs Throttle and Pressure Ratio
columns: 3 rows: 9
0.900000 1.000000 22.570000
0.000000 78.234420 78.234420
0.200000 80.781280 80.781280
0.400000 82.827740 82.827740
0.540000 84.395960 84.395960
0.700000 87.991585 87.991585
0.800000 90.549545 90.549545
0.900000 93.360000 94.360000
1.000000 96.600000 97.600000

Record: 1505 Turbine CN2 vs fuel flow
Points: 10
0.000000 0.000000
0.003000 26.385071
0.050000 28.619570
0.310000 38.408459
0.530000 56.133698
0.650000 70.928604
0.740000 75.794655
0.813000 85.249748
0.910000 105.408745
0.960000 109.582940

Record: 1506 Turbine Thrust Scalars vs CN1 and Mach No.
columns: 3 rows: 21
0.000000 0.000000 0.900000
0.000000 0.000000 0.000000
20.900000 0.100000 0.060000
28.300000 0.120000 0.080000
33.000000 0.160000 0.120000
40.000000 0.220000 0.170000
46.500000 0.280000 0.240000
51.000000 0.340000 0.290000
55.000000 0.420000 0.380000
60.500000 0.500000 0.490000
65.500000 0.560000 0.580000
70.000000 0.610000 0.670000
74.000000 0.650000 0.750000
78.000000 0.700000 0.860000
82.000000 0.750000 0.940000
86.100000 0.800000 1.000000
90.000000 0.850000 1.050000
94.000000 0.910000 1.100000
97.000000 0.980000 1.140000
100.000000 1.030000 1.170000
105.000000 1.070000 1.230000

Record: 1507 Ram Drag Factor vs CN1 and Mach No.
columns: 4 rows: 9
0.000000 0.195000 0.550000 0.700000
0.000000 0.000000 0.000000 0.000000
20.000000 6.821710 4.565511 3.195667
45.000000 13.456481 10.388092 7.959922
77.100000 20.389982 18.342436 15.950314
87.000000 23.076120 20.508469 15.793530
91.250000 23.900000 21.145239 15.265453
95.300000 24.426260 21.358183 14.455539
98.900000 24.689340 21.470797 13.550196
:laugh: :o :roll: :D


I agree about FCOM information, but in my interpretation, 82-84% of N1 are during climb, not in cruise mode. This is the problem, I don't know value in cruise, but by seen video on youtube, value seems to be close to 77-78%

I set actual AIR file to get the right value dirung climb (82-84%) but I have yet too much thrust between 0-80% of throttles.

Prosdocimo
Posts: 277
Joined: 10 Oct 2014, 12:05

Re: Project FMC simplified for Project Airbus

Post by Prosdocimo »

:o very complex!
I found this page just in case
http://www.aero.sors.fr/fsairfile.html

Here a pdf chart from fsdeveloper but for sure you already know it!
http://www.fsdeveloper.com/forum/resour ... ations.43/

wulfbindewald
Posts: 501
Joined: 20 Jan 2014, 21:27

Re: Project FMC simplified for Project Airbus

Post by wulfbindewald »

fdd_fr wrote:Beta A321 CFM FD-FMC
Panel update and fix:
- fixed a dozen of XML syntax error in the gauges set (thank you to Francesco Bragagnolo who provided to me the LOG error file from P3D, that give a report about panel errors.
These syntax errors was minors, but might occurs FPS hit and memmory occupency.
The A321 panel version with the a.m. corrections work smoother than the current A320/318 panel. The approach related values in the PFD are displayed nearly without lag on demanding situations e.g. ILS capture after hold pattern. So it would be great to update respectivly the A320/318 panels too.

The calculated A321 V1/VR/V2 speeds e.g with 50% fuel V1-VR-V2= 146-152-155 kts seem to be close to each other.

Wulf

fdd_fr
Posts: 1764
Joined: 03 Jan 2012, 16:02

Re: Project FMC simplified for Project Airbus

Post by fdd_fr »

Thanks for feedback.

Maybe the XML syntax errors that occured some lag. A318/A320 wil be updated, when I will write new features which we have spoke.

I adjust a new A321 air file. I hope post this new AIR file tomorrow.


As I write UUDD Moscow data file, I discovered that stock FSX airport has wrong ILS heading, wrong runway heading, so ILS and RNAV approach don't work.

So I begin to edit the AFCAD.

Many FSX errors to correct :
FSX default AFCAD :
Image


14L-32R offset
Image


14R-32L had missing taxiways to exit of the runway
Image

Wrong aprons fixed.

under construction :


Runway heading, ILS, taxiways, aprons fixed
Image

Image

Prosdocimo
Posts: 277
Joined: 10 Oct 2014, 12:05

Re: Project FMC simplified for Project Airbus

Post by Prosdocimo »

Hi i found that center2 and center3 tanks are not counted into the fuel ecam page. I mean, i only read the main center fuel volume that is not the sum of center + center2 + center3

fdd_fr
Posts: 1764
Joined: 03 Jan 2012, 16:02

Re: Project FMC simplified for Project Airbus

Post by fdd_fr »

You are right.
I haven't yet change the ECAM gauge code about the 3 center tanks of A321. No effects on fly. Just readinds are false.
I will write code as soon as possible.

fdd_fr
Posts: 1764
Joined: 03 Jan 2012, 16:02

Re: Project FMC simplified for Project Airbus

Post by fdd_fr »

For those who test A321, I done a new AIR file, more realistic I think (there is also an updated aircraft.cfg joined)

http://freenavdbgroup.com/Temp/A321%20A ... le%20B.zip

I forgot to update VC view in the aircraft.cfg file. Check the Wulf's post above to the value.

Thanks for feedback.

wulfbindewald
Posts: 501
Joined: 20 Jan 2014, 21:27

Re: Project FMC simplified for Project Airbus

Post by wulfbindewald »

Today early morning I made some A318 tests near San Luis Obispo, California, and I wanted to share one pic with you.

Image

fdd_fr
Posts: 1764
Joined: 03 Jan 2012, 16:02

Re: Project FMC simplified for Project Airbus

Post by fdd_fr »

California dream 8-)

fdd_fr
Posts: 1764
Joined: 03 Jan 2012, 16:02

Re: Project FMC simplified for Project Airbus

Post by fdd_fr »

For airport creators, I discovered a trick with Notepad++, to win time when deleting extra commas at the end of the lines, in CSV files, after EXCEL export.

You have just to double click on the trailing commas, and all extras commas will be automatically selected, you have just to press “Del” key and add required number of commas.
A better solution is to copy in the clipboard, the number of commas required (4 when no holding or other procedure in STAR_data file for exemple), then I double click on the trailing commas and do a “CTRL+V” to replace the unused commas by the 4 commas required.
Very quick job !

I am updating Airport manual with the new "Exit altitude" feature and Panel 1.15 arrive for all aircraft.

Prosdocimo
Posts: 277
Joined: 10 Oct 2014, 12:05

Re: Project FMC simplified for Project Airbus

Post by Prosdocimo »

Hi thank you for the update. Here my feedbacks.
Engeenes run well now, good job!
Here some notes to you kind attention. I feel that V1 Vr and V2 are too much close each others. I found that airbrakes are deployed fully during managed descent, and not by half maximum as in a318 and a320. Lastly Ecam doesn't alert about the risk to get frozen the Pitot tube. All the rest seems pretty ok to me ;)

fdd_fr
Posts: 1764
Joined: 03 Jan 2012, 16:02

Re: Project FMC simplified for Project Airbus

Post by fdd_fr »

Thanks for feedback.

I think that thrust is now ok at high throttle, but not enough power at low throttle (must set N1 to 30 or 40% to taxi..) I will improve that.

About V1, VR and V2, they are built with Airbus chart.

But V1 is theoretical, because in real life, depend of the runway length, Altitude, temperature, grossweight and take-off thrust.
FD-FMC take only grossweight in account.

I will decrease V1.

VR and V2 are realistics.

Prosdocimo
Posts: 277
Joined: 10 Oct 2014, 12:05

Re: Project FMC simplified for Project Airbus

Post by Prosdocimo »

Thank you Françoise. I found this video about a simulator in which idle N1 seems to be just around 20%. Ok it's an A320 and the engine should be a CFM

http://m.youtube.com/watch?v=uqKeSO6msDk

fdd_fr
Posts: 1764
Joined: 03 Jan 2012, 16:02

Re: Project FMC simplified for Project Airbus

Post by fdd_fr »

I talk about net thrust (in Lbs or Kg) . N1 value is correct, but thrust effect is too low. I must increase the thrust effect without change N1 value, from 0 to 50% of N1.

IN AIR file, you have dozen of parameters that change real thrust according N1 and N2 value (engine efficiency).

fdd_fr
Posts: 1764
Joined: 03 Jan 2012, 16:02

Re: Project FMC simplified for Project Airbus

Post by fdd_fr »

Panel update (A318/A320) with the new holding exit altitude will be uploaded saturday, with airport database update.


This new holding feature (exit altitude) brings solutions to small airports that haven't STAR.

I am working on SEQU - Quito (Peru), and like many cases, this airport has just a RNAV STAR, from the north.

But many approaches begin with a holding pattern at the main airport VOR.

So, in the past, this was difficult to do something when airport was surrounded by mountains, because VOR holding altitude was too low to create a STAR with only the VOR as waypoint.

Now, I can create direct arrival on the VOR, with a security high altitude, above surrounded mountains (according little MSA altitude chart) and STAR will have only 1 waypoint, the VOR, with holding and exit altitude as the approach charts requires.

STAR will be subdivised in 4 STAR, from each direction, according holding pattern.

Hlding pattern will be mandatory to lose altitude before begin approach.

All will be explained in the airport information file.


Francois

fdd_fr
Posts: 1764
Joined: 03 Jan 2012, 16:02

Re: Project FMC simplified for Project Airbus

Post by fdd_fr »

To all FD-FMC user, you can suggest next airports that you want in the database. The goal is to do your prefered airports :)

THink to airport that have a special interest, or an interest for the community (scenery, difficult approach....)

I wait your proposals.....I would like a wishlist 8-)

wulfbindewald
Posts: 501
Joined: 20 Jan 2014, 21:27

Re: Project FMC simplified for Project Airbus

Post by wulfbindewald »

my airport wishlist:
SAEZ Ministro Pistarini, former Ezeiza - Buenos Aires - Argentina
SABE Aeroparque Jorge Newberry - Buenos Aires - Argentina (high frequented domestic - city airport)
SCEL Arturo Merino Benitez Intl - Santiago - Chile (high mountains and challenging approaches)
TXKF L.F. Waide Intl - Bermuda

fdd_fr
Posts: 1764
Joined: 03 Jan 2012, 16:02

Re: Project FMC simplified for Project Airbus

Post by fdd_fr »

Ok. I will do.

I completed SEQU Quito. Altitude 9230 ft !! And many high mountains. I am sure that you will like it.
I have to test it

Prosdocimo
Posts: 277
Joined: 10 Oct 2014, 12:05

Re: Project FMC simplified for Project Airbus

Post by Prosdocimo »

Hi thank you!
I would say:
LIRC Reggio Calabria - it's difficult due to mountains and crosswind. A special abilitation is required to land. Rwy33 requires a strong angled landing
LIMC Milano Malpensa - just because it's missing and the presence of ai traffic in fsx ;)

The320Pilot
Posts: 354
Joined: 29 Jul 2014, 22:47

Re: Project FMC simplified for Project Airbus

Post by The320Pilot »

Please SBRJ, Santos Dumont Airport, Rio de Janeiro.

Certified aircraft: A318, A319, B737-700, B738 SFP, Embraer, Fokker 70/100, propliners and bizjets smaller than the B738. Note that neither the A320 nor the A321 are certified.

Main runway: a little over 1300 metres long. All 02L/R approaches require turns on final approach.

Have a look over here for the charts. http://www.aisweb.aer.mil.br/?i=cartas

fdd_fr
Posts: 1764
Joined: 03 Jan 2012, 16:02

Re: Project FMC simplified for Project Airbus

Post by fdd_fr »

Ok. They will be done.

About Brazil, I believe that SBSP Sao Paulo Congonhas is also a very difficult airport, with many accidents.....

The320Pilot
Posts: 354
Joined: 29 Jul 2014, 22:47

Re: Project FMC simplified for Project Airbus

Post by The320Pilot »

fdd_fr wrote:Ok. They will be done.

About Brazil, I believe that SBSP Sao Paulo Congonhas is also a very difficult airport, with many accidents.....
There have been a few accidents in SBSP, but so far it has straight-in approaches. Although I would be pleased if you coded SBSP.

Prosdocimo
Posts: 277
Joined: 10 Oct 2014, 12:05

Re: Project FMC simplified for Project Airbus

Post by Prosdocimo »

Hi I realized that Estimated Fuel at Arrival is not updated if I change fuel quantity by menù after the aircraft had been loaded.

fdd_fr
Posts: 1764
Joined: 03 Jan 2012, 16:02

Re: Project FMC simplified for Project Airbus

Post by fdd_fr »

I think that there is no XML function to detect if user open Fuel menu. Maybe there is a solution by using Simconnect.dll, but I have never work with Simconnect ....I know that Simconnect is very complex.

I am preparing airport database update and panels update....

Prosdocimo
Posts: 277
Joined: 10 Oct 2014, 12:05

Re: Project FMC simplified for Project Airbus

Post by Prosdocimo »

Thanks for your clarification, but is not that value linked to FOB value in FMC right pane?

I'm defenetively looking forward your updates!

fdd_fr
Posts: 1764
Joined: 03 Jan 2012, 16:02

Re: Project FMC simplified for Project Airbus

Post by fdd_fr »

To add this feature, I must add a test to know if FOB is updated; It is possible, but I can only detect if FOB increase, not decrease.

In all case. Fuel consumption is not accurate in FSX, because too much at low level and too low at high level.

fdd_fr
Posts: 1764
Joined: 03 Jan 2012, 16:02

Re: Project FMC simplified for Project Airbus

Post by fdd_fr »

Sorry for the delay, but preparing files to update requires times....

Release Panel 1.15 are online, for A318 and A320 :
http://freenavdbgroup.com/?page_id=159

These panels provide :

- New feature about STAR holding pattern; Now, a STAR holding pattern can have 2 altitude constraints ; First is the constraint to arrive at the holding waypoint; second is the altitude constraint when ending holding (lower altitude).
This feature is required with few airports, because holding is used to lose altitude, before approaching (mountains). This is the case with KSBP and SEQU that I will upload tomorrow, because I had not enough time today.
Of course, in this case, holding is mandatory, otherwise, you will be too highier for final. Please, read information file about airport in FD-FMC.
- v1.15 fix some syntax errors in XML code
- fix Master Caution double click issue to open FMC window
- New setting in aircraft.cfg file to improve cruise atitude (nose less up)


I will po st tomorrow new airports and AIRAC.

Francois

fdd_fr
Posts: 1764
Joined: 03 Jan 2012, 16:02

Re: Project FMC simplified for Project Airbus

Post by fdd_fr »

Airport database updated :

- EHEH – Eindhoven – Netherlands by Martien Van Rooten
- ENAL – Alesund/Vigra – Norway by Francois Dore
- HTKJ – Kilimanjaro Intl – Tanzania by Francois Dore
- LSGS – Sion – Switzerland by Georges
- MDPP – Puerto Plata – Dominican Republic by teophrasis Arredondo
- SEQU – Quito Mariscal Sucre – Ecuador by Francois Dore
- UUDD – Moscow Domodedovo – Russia by Francois Dore

One update

- KSBP - San luis Regional - USA (California) by Wulf Bindewald

New AIRAC file : 01302016


Please, note that :

KSBP and SEQU requires the new panel 1.15, to execute final holding pattern.
UUDD is provided with an optional AFCAD, because FSX default airport has a wrong runway 14L-32R heading and ILS offset.

I will update airport creation manual with the new feature...

fdd_fr
Posts: 1764
Joined: 03 Jan 2012, 16:02

Re: Project FMC simplified for Project Airbus

Post by fdd_fr »

I am testing a new AIR file. If all is ok, I will post it tonight.

Better thrust for taxiing.

I will join a new aircraft.cfg, with new setting about cruise atitude (not altitude) and fix VC night lighting.


I have since some days, micro freeze issue with my sim. FPS are good (30 to 100) but Sim freeze during 1 second every 15/20 seconds. Do you know which setting can occurs this problem.

The last setting that I changed are :
- Nvidia driver (Antialiasing setting)
- TEXTURE_BANDWIDTH_MULT
- TextureMaxLoad
- Autogen density (max tree and building per cell)...

Any idea ?

Prosdocimo
Posts: 277
Joined: 10 Oct 2014, 12:05

Re: Project FMC simplified for Project Airbus

Post by Prosdocimo »

No idea, but have you tried to change back one by one those values?

fdd_fr
Posts: 1764
Joined: 03 Jan 2012, 16:02

Re: Project FMC simplified for Project Airbus

Post by fdd_fr »

yes, but nothing change....

wulfbindewald
Posts: 501
Joined: 20 Jan 2014, 21:27

Re: Project FMC simplified for Project Airbus

Post by wulfbindewald »

Is there a specific scenery which may cause stutters or even those sceneries which have been fine in the past?
Under the assumption, that you are using FSX in DX9 mode I suggest to delete the current FSX.CFG file (or change the name e.g. to FSX.cfg.old) and let FSX rebuild a new one.

Update the new FSX.cfg and ....
- include HIGHMEMFIX=1
- TEXTURE_MAX_LOAD=1024 ...later may be increased to 2048 (4096)
- LOD_RADIUS=4.5 ....later maybe increased to 5.5 or higher in 0.5 steps
In FSX menu: Autogen density beginning with "normal", then increase.

Wulf

fdd_fr
Posts: 1764
Joined: 03 Jan 2012, 16:02

Re: Project FMC simplified for Project Airbus

Post by fdd_fr »

DX9 (win XP).

Ok, I will try to delete fsx.cfg.



New AIR file and aircraft.cfg file for A321 CFM beta : http://freenavdbgroup.com/Temp/A321%20A ... 0files.zip

AIR file change : New thrust value at low throttles; more power for taxiing....

Aircraft.cfg :
VC night lighting fixed; pilots are iluminated from exterior view, without get a extra light in VC interior.
new cruise_scalar setting to get better behavior when aircraft level off or cruise.
VC view fixed with Wulf's setting.

wulfbindewald
Posts: 501
Joined: 20 Jan 2014, 21:27

Re: Project FMC simplified for Project Airbus

Post by wulfbindewald »

A321 panel V1.15 with new aircraft.cfg and AIR file from 07.02.2016:
The thrust seems to be ok from the "feeling".

V1/VR/V2 take off speeds:
One example with T/O flaps 2 and GrW=83000 kg: V1/VR/V2= 148/154/157 kts., should be 141/154/157 kts acc. to A321 ref doc.
--> VR/V2 seems ok, V1 to be corrected acc. to ref doc.

Wulf

fdd_fr
Posts: 1764
Joined: 03 Jan 2012, 16:02

Re: Project FMC simplified for Project Airbus

Post by fdd_fr »

Thanks Wulf.

Can you send me your V1/V2/VR charts, because mine is not complete.

wulfbindewald
Posts: 501
Joined: 20 Jan 2014, 21:27

Re: Project FMC simplified for Project Airbus

Post by wulfbindewald »

I´ve taken your own AirbusA321_ref.htm doc, located and provided in the PA_A321FD-FMC_CFM package.

fdd_fr
Posts: 1764
Joined: 03 Jan 2012, 16:02

Re: Project FMC simplified for Project Airbus

Post by fdd_fr »

I have "imagine" this chart with the few data that I have collected, but I haven't the complete chart.

Prosdocimo
Posts: 277
Joined: 10 Oct 2014, 12:05

Re: Project FMC simplified for Project Airbus

Post by Prosdocimo »

Hi I found this

https://www.google.it/url?sa=t&source=w ... oA40eGNaXQ

But it takes A320 in example. Are those values common to a318 and a321?

a320_flyer
Posts: 17
Joined: 28 Sep 2015, 14:55

Re: Project FMC simplified for Project Airbus

Post by a320_flyer »

Dear Francois,

I really have had some very nice with your creation! Excellent and most used freeware for me! But i just had two questions, do you happen to have any date when the a321 will come out? and will next updates on your planes have an auto installer (for the whole plane package a318/a320)

Thank You so much for your work!

fdd_fr
Posts: 1764
Joined: 03 Jan 2012, 16:02

Re: Project FMC simplified for Project Airbus

Post by fdd_fr »

I am very busy these days....so A321progress slowly. But I think ready in one month (remains AIR file adjustments,3 ccentral tanks fuel system to code and autoflare adjustements).

I am working on a auto-installer; I had dozen of emails because people have difficulties to install aircraft....

Francois

a320_flyer
Posts: 17
Joined: 28 Sep 2015, 14:55

Re: Project FMC simplified for Project Airbus

Post by a320_flyer »

ok, then thank you very much.

fdd_fr
Posts: 1764
Joined: 03 Jan 2012, 16:02

Re: Project FMC simplified for Project Airbus

Post by fdd_fr »

The320Pilot wrote:Francois, I think the value min_ailerons_for_spoilerons should be changed from 12 to 4. The movement of the spoilerons seems more real when it is at 4, especially during take-off and landing. Why don't you give it a try to see how it looks?
Ok, I will test that tonight.
Prosdocimo wrote:
fdd_fr wrote:Beta A321 CFM FD-FMC online :


- Aircraft attitude maybe no perfect when level of : Maybe too much nose up.....same thing at cruise level and speed
Hi i found at FL350 and 0.78 M (always at standard weather conditions, 40% of total fuel), nose is around 0.5° higher than expected by FCOM. It should be around 1.8-2° but it's around 2.5. But if you don't want split hairs, i guess it could be ok anyway.

I did many tests with different setting, and aircraft has nose too up yet in cruise mode. My knowledge in MS flight dynamics charts is too limited. I will ask some help to Fsdeveloper members for this issue.

Francois

fdd_fr
Posts: 1764
Joined: 03 Jan 2012, 16:02

Re: Project FMC simplified for Project Airbus

Post by fdd_fr »

Hello,

I am updating airport databse. Link to download in 2 or 3 hours....


About beta A321, for those who have download the Beta, I uploaded an updated AIR file, to solve the nose up at cruise. Now, pitch attitude is ok at cruise speed and cruise flight level

Here the AIR file : http://freenavdbgroup.com/Temp/pa321-cfm56-5B3.zip

IMPORTANT :
You must edit your aircraft.cfg and change the value of the cruise_lift_scalar setting, in [flight_tuning] section.
[flight_tuning]
elevator_effectiveness=1.0
pitch_stability=1.3
roll_stability=1.0
yaw_stability=1.0
aileron_trim_effectiveness=0.9
rudder_trim_effectiveness=1.1
cruise_lift_scalar=1.0 //old value 1.50
parasite_drag_scalar=1.0
induced_drag_scalar=1.0

Change also Slats lift and pitch values :
[flaps.1] //slats
type=2
span-outboard=0.95
extending-time=10
flaps-position.0=0
flaps-position.1=18
flaps-position.2=18
flaps-position.3=22
flaps-position.4=22
flaps-position.5=27
damaging-speed=250
blowout-speed=270
lift_scalar=0.5
drag_scalar=0.7
pitch_scalar=0.7
system_type=1

Now, descent and approach behavior must be checked and also Autoland.....

Francois

Prosdocimo
Posts: 277
Joined: 10 Oct 2014, 12:05

Re: Project FMC simplified for Project Airbus

Post by Prosdocimo »

Hi thanks for this update! Autoland and flare seems work perfectly. I landed at 3 degree or so.

Here some notes about pitch attitude at indicated FL.

Please note that negative pitch values refer to a positive attitude (upper sector) in PFD! And viceversa. You may check this on the bug gauge in 2D panel view.

FL390, 0.77M
Fuel 100%: pitch -2.3
Fuel 50%: pitch -1.18
Fuel 25%: pitch: -0.67
Fuel 10%: pitch: -0.27

FL350, 0.77M
Fuel 100%: pitch -1.13
Fuel 50%: pitch -0.27
Fuel 25%: pitch: -0.23
Fuel 10%: pitch: +0.55

FL300, 0.77M
Fuel 100%: pitch -0.16
Fuel 50%: pitch +0.63
Fuel 25%: pitch: +1.02
Fuel 10%: pitch: +1.25


So note that at FL300 the aircraft flies below the horizon for a few degree. Tests made at standard weather: clear sky, no wind, 1013, 15°C at sea level.

fdd_fr
Posts: 1764
Joined: 03 Jan 2012, 16:02

Re: Project FMC simplified for Project Airbus

Post by fdd_fr »

Thanks your report.

Positive value are abnormal. I must improve yet :laugh:

Database updated :

EHBK - Maastricht Aachen - Netherlands , By Martien Van Rooten
KBIL - Billings Intl - USA (Montana) , By Wulf Bindewald
KSFO - San Francisco Intl - USA (California) , by Francois Dore
KVNY - Van Nuys - USA (California) , by Wulf Bindewald
LOWG - Graz - Austria, by Philippe Bronier


New airports are in blue in the table, and in yellow in the Google earth KMZ file.

Please, note that KSFO has a second Localizer for runway 28R, dedicated to dual runway landing. This Localizer is not in the runway axis and you have to disconnect your AP at DARNE. These approaches are named LDA and GPS//. Classic ILS /LOC and RNAV approach are also available. Please, read information text file in the FMC.


Updates :

EHRD - Rotterdam - Netherlands, updated by Martien Van Rooten : Add add missing ILS and fix ILS conflict with a close airport (v4.01)


New AIRAC file : 02132016.

http://freenavdbgroup.com/


Francois Dore
Last edited by fdd_fr on 13 Feb 2016, 16:21, edited 1 time in total.

fdd_fr
Posts: 1764
Joined: 03 Jan 2012, 16:02

Re: Project FMC simplified for Project Airbus

Post by fdd_fr »

fdd_fr wrote:Thanks your report.

Positive value are abnormal. I must improve yet :laugh:
I will try to adjust center of gravity.... if attitude change with fuel level, I think that I must check tanks location ......

fdd_fr
Posts: 1764
Joined: 03 Jan 2012, 16:02

Re: Project FMC simplified for Project Airbus

Post by fdd_fr »

About KSFO (added today to database)

There are specials procedure to land on runway 28R.

Due to huge traffic and very close runways, Rwy 28R and 28L have dual approach porcedures.

There is a third LOC , for the runway 28R, used to land, to keep a large space with aircraft that land on RWY28L.
But think that you have to disconnect AP before reaching DARNE fix, to join the runway axis.

In FMC, these approches are identified as following:
28R LDA - FMC set automatically the radio, you have to use the LOC button to capture this LOC.
28R RNAV (GPS//) : // for parallel approach


Image

So, at KSFO, in real world, ATC maintain aircraft high and ask them to descent quickly at the last moment, to avoid trouble with departure aircrafts.

Prosdocimo
Posts: 277
Joined: 10 Oct 2014, 12:05

Re: Project FMC simplified for Project Airbus

Post by Prosdocimo »

Hi I changed cruise_lift_scalar to 0.9 and these are the results:

FL390, 0.77M
Fuel 50%: pitch -3.89
Fuel 25%: pitch: -3.24
Fuel 10%: pitch: -2.74

FL350, 0.77M
Fuel 50%: pitch -2.44
Fuel 25%: pitch: -1.91
Fuel 10%: pitch: -1.63

FL300, 0.77M
Fuel 50%: pitch -1.12
Fuel 25%: pitch: -0.68
Fuel 10%: pitch: -0.45

At FL300 it seems good but too much pitch at FL390. Maybe set cruise_lift to 0.95 could be better?

Edit:
François, is it right the weight in station_load.7=605 ?
The .5 is 6050

Post Reply