PFPX and 747-400ER

[United744]

Hi,

Does anyone know how to get PFPX to recognize the increased MTOM of the 747-400ER? It insists on 875,000 lbs, and won't accept 910,000 lbs.

[Michel Vandaele]

I like to add a second question, is there a PSX profile available for PFPX and TopCat. As the once now available are for PMDG.
Thks for help
Michel

[United744]

What is their source? Do they analyze the sim or build it on a real 747 profile?

So far I found it to be pretty accurate with respect to cruise altitude and fuel burn, but I have not tweaked any of the bias yet to try and help it better match PSX. I need to do a long range flight to get a better idea of whether the figures are accurate to the sim or not.

I tweaked the PMDG profile weights to match the passenger ER model with RR engines, fixing the MTOM issue.

[DougSnow]

For the Boeing models I have created (most of the Boeings in PFPX) I am using true professional tools to make the data file.  The same professional tools that airlines use to create their data files for their flight planning systems. I create the data file, then get it to CG so he can compile it into the format PFPX can use.

That being said, I dont have the data to create the 744ER data file, because if I had it, I'd have already created it. I've asked my spies, but so far nothing... Believe me, I want  to...

I spose I could do a max takeoff weight flight test and see where the data takes me, but I just havent had the time.

[Will]

I know this thread is 6 years old, but I have the answer!

You need to edit the Aircraft "Type" file, and then you will be able to use the increased MTOW within PFPX.

Go to the Aircraft folder in PFPX. The Windows pathway to it is probably something like:

Users > Public > Documents > PFPX Data > AircraftTypes

Then open up a trusted B747-400 file with the engines of your choice. There will be a section that looks something like this:

[DEFAULT_DATA_KG]
DOW=183650
MZFW=251743
MTOW=397210
MRW=398344
MLW=285763
FuelCapacity=173740
CargoCapacity=67990
TaxiFuelPerMinute=45
APUBurnPerHour=270

[DEFAULT_DATA_LB]
DOW=404880
MZFW=555000
MTOW=875700
MRW=878200
MLW=630000
FuelCapacity=383032
CargoCapacity=149892
TaxiFuelPerMinute=100
APUBurnPerHour=595

Replace that section with this (feel free to copy and paste):

[DEFAULT_DATA_KG]
DOW=184000
MZFW=251743
MTOW=412769
MRW=413903
MLW=295742
FuelCapacity=192856
CargoCapacity=67990
TaxiFuelPerMinute=45
APUBurnPerHour=270

[DEFAULT_DATA_LB]
DOW=404880
MZFW=555000
MTOW=910000
MRW=912500
MLW=652000
FuelCapacity=425175
CargoCapacity=149892
TaxiFuelPerMinute=100
APUBurnPerHour=595

And then save the file with a new file name indicating that it's an ER version. I'd suggest you name the file this:

Boeing 747-400ER RB211-524H8.txt (or whatever engines you chose)

Then, run PFPX, and go to Aircraft Data > Add new aircraft. Under the dropdown "Type," select the new 747-400ER that you just created.

You'll have the MTOW, the max ramp weight, and the fuel capacity of the ER model.



What you won't have is strict B747-400ER performance. You can play around with the bias settings to get as close to accurate numbers as you want, but I suspect you wont be too far off the mark as it is.

Sorry this answer is 6 years too late!

[G-CIVA]

Why don't you just ask me for access to this?

http://aerowinx.com/board/index.php?topic=4820.0

All the hard work & much much more reflecting the real world operations is there at your fingertips already.

[Will]

Steve, thank you for your contributions to the community. I'm sure it was a lot of work to put those files together.

In your folder, I didn't notice a 747-400ER with RB211 engines. Is it safe to say that no 747-400ER operator ever chose Rolls Royce engines? And if that's the case, is thinking about a PFPX Aircraft Type profile for a (fictional) 747-400ER with RB211s a lost cause? Is there a profile that comes reasonably close?

I know this is a crazy question. Thanks.

[G-CIVA]

In your folder, I didn't notice a 747-400ER with RB211 engines. Is it safe to say that no 747-400ER operator ever chose Rolls Royce engines? And if that's the case, is thinking about a PFPX Aircraft Type profile for a (fictional) 747-400ER with RB211s a lost cause? Is there a profile that comes reasonably close?

Correct, no operator ever chose the RR or PW power plant for the 747-400 ER PAX ... indeed that design was really created as a result of a specific request from Qantas for use on their ultra long haul trans Pacific sectors.

The GE & PW power plants fitted the 747-400 ERF & this is still in use.

I have never seen proprietary performance data for RR engined B744 ER or ERF aircraft. For me personally I would not attempt to make something "off the cuff" since it does not exist in the real world.

Cheers

Steve