Recent posts

[a) No ADC data]

#21

Hangar 7 / Re: CF6 ECU ALTN

Last post by Hardy Heinlin - Thu, 30 Mar 2023 00:29

I think the primary question is the wording in the text at the beginning: What does the author mean by "input failure from the ADC"? In the next sentence they use the term "valid ADC information" in the same context. The validation does not necessarily check for data existence alone; it also checks for disagreement with other reference data which may come from the engine probes.

So, is it ...

a) No ADC data

b) ADC data disagrees with engine probe data


Original text:
"In the event of an input failure from the ADC, the ECU may operate in the reversionary mode. In this mode the computer uses the last valid ADC information."

In a logically consistent way, the text might also read:
"In the event of an input failure from the ADC, the ECU may operate in the reversionary mode. In this mode the computer uses the last received input from the ADC."

Or:
"In the event of invalid ADC information, the ECU may operate in the reversionary mode. In this mode the computer uses the last valid ADC information."


The same text problem occurs in the diagram text. Is "fail" a "disagreement" or a "non-existence"?


|-|ardy


I just realized, I'm having exactly the same thoughts as John H Watson :-)

#22

Hangar 7 / Re: No E/D on VNAV DES Page

Last post by Hardy Heinlin - Thu, 30 Mar 2023 00:00

Sorry, I can't help in such cases. The helpers are at Lufthansa or in the Turkish aviation administration.

Maybe it's already fixed it in the next cycle anyway.

#23

Hangar 7 / Re: No E/D on VNAV DES Page

Last post by MRFarhadi - Wed, 29 Mar 2023 23:46

I'm using the 2303.
Can I get you any useful data on that which isn't protected? Screenshots, other test data, database files, etc.

#24

Hangar 7 / Re: No E/D on VNAV DES Page

Last post by Hardy Heinlin - Wed, 29 Mar 2023 23:42

So it must be a typo in the Lido ARINC file (or original government data). I just tested Lido's cycle 2212 and there the "15UCC" has no constraint, which is correct. What cycle are you using?

(Aerosoft are not allowed to modify Lido's data. And even Lido cannot fix it if the error is in the original government data.)


|-|ardy

#25

Hangar 7 / FPPM: Improved climb + Tire Sp...

Last post by MRFarhadi - Wed, 29 Mar 2023 23:39

Fellow aviators,

Recently, I've been looking a bit deeper into Boeing's FPPMs and as an All-time Airbus guy, it's been a bit confusing, to say the least, getting my head around some stuff lately.

I've found on 737, 747, 757, 767 and 777 FPPMs there's a chart for Improved Climb Performance which employs a more optimized V2/Vs for improved climb performance. Pretty self-explanatory to this stage.
What's dazzling me is why on earth (or in air) there's an Improved Climb chart for Tire Speed Limited weights?
Wasn't the whole point of providing a tire speed limited weight, limiting the speed V1 and/or Vr occurs so that the tire speed limitation isn't busted? Isn't increasing V1/Vr/V2 for the sake of improving climb performance a bit counterintuitive at this stage?


Best,
Reza

#26

Hangar 7 / Re: Speedbrake Arming

Last post by Jeroen Hoppenbrouwers - Wed, 29 Mar 2023 22:27

He skipped my SATCOM box!
He skipped my SATCOM box!
He skipped my SATCOM box!

<running around in panic>

I completely understand that he references to the two forward MCDUs as "flight management systems" but these terminals really connect to so much more ... ah well ...

Next time I'm in Hong Kong I'll try to get him to pay attention to less known systems!  :-)


Hoppie

[AND]

#27

Hangar 7 / Re: CF6 ECU ALTN

Last post by John H Watson - Wed, 29 Mar 2023 21:36

You may be right



But I don't understand the flow chart. What does TAT/T12 mean? ADC-sourced TAT AND fan intake temperature (T12)?

Is it like the RB211 which has a data validation system, where fan inlet temperature (T2.0) is used by the FAFC to validate and backup ADC-sourced TAT? Once the RB211 FAFC has validated the ADC data  (by comparison), it uses the ADC data. I've lost the validation flow chart for the moment.

Does "TAT/T12" indicate the validation process on the CF6?

It seems ironic that the engine sensors (T2.0, etc) are used to validate the ADC-gathered sensor data, but then the ADC sensors are used after this.

After further reading, I see that the engine sensors can't provide a substitute for "total air pressure" (which comes from the ADCs), but can substitute all the other parameters.

The alternate light seems to come because the last valid ADC data stored in EEC memory (see flow chart) will only provide a temporary solution and engine overboost is possible if it relies on soft reversionary mode for too long.

So only hard reversion (ALTN EEC switch pushed) can provide full protection. 

#28

Hangar 7 / Re: No E/D on VNAV DES Page

Last post by MRFarhadi - Wed, 29 Mar 2023 21:01

Thanks for investigating.
I'm gonna keep an eye out for nonsense constraints, on behalf of Aerosoft

Much appreciate the support, Dear Hardy.

#29

Accessories / Re: Simfest Dispatch and BACAR...

Last post by cavaricooper - Wed, 29 Mar 2023 20:56

Gary-

Any chance of having a Cargolux (CLX) option (kgs) please? Now that I have discovered the delights of PSX.NET I am eager to get back into the Windows support ecosystem.

Thanks for considering!

C

#30

Accessories / Re: PSX.NET.vPilot

Last post by Kurt - Wed, 29 Mar 2023 20:41

Kurt,

Can you try

https://www.dropbox.com/s/pxpzbz4eyphzorf/DecimalFix.zip?dl=1

for me?

PS: don't forget to right click properties on the DLL and click Unblock when you have copied into the plugins directory.

Cheers
G

Hi Gary - happy to report that the new DLL works no matter if "." or"," is set as decimal separator.

Well done - thanks

BR

Kurt