[RESOLVED] "X-Tank Brä"-light extinguishes prematurely during engine start. (OB , MT)

[Snappy]

Currently the "X-Tank Brä" light on the left warning indicator extinguishes prematurely during engine start,as soon as the engine rpm passes approximately 50% and then idles at around 60% with the external fuel tank connected.

According to the manual the light should stay on after engine start : From Page 70 of the 2.1 Beta manual, Fuel System -> Start up, it says:

The indicator light X-TANK BRÄ continues to be lit until the tank pump pressure in the external fuel tank has built up, which occurs at about 70% engine RPM.

The engine does not reach 70% during the entire start process, so the light should stay on, until you manually increase power. The cold- start tutorial voice over also mentions the light as being on after start (contrary to how it is in the current version).

Also on Page 71 in the manual under Fuel system warning it again says:

X- TANK BRÄ Indicates a fault in the external fuel tank. Should be visible below 70% RPM due to lack of pressure.

 

Kind regards,

Snappy

Edited May 10, 2023 by Snappy

[Zabuzard]

Thanks, tracked internally as AJS37-360.

[Zabuzard]

Fixed internally. Will be in an upcoming patch

 

[Snappy]

Thanks a lot!:)

[TOViper]

Hey Zabuzard!

Two question came up during reading:
1. Did you consider fuel flow too? Following the information given in the manual, there should not be fuel flow to the internal fuel system when the light is on due to missing tank pump pressure.
2. Do you know why the Tank pump switch TANKPUMP (NORM / AVST) on the right wall console was not modelled?

Thanks and kind regards,
TOViper

Edited May 13, 2023 by TOViper

[Spirale]

Really impressive how our beloved Viggen become with such accurate details :).

After all this years it is warmly welcome

[Silhou]

On 5/13/2023 at 10:21 AM, TOViper said:

Hey Zabuzard!

Two question came up during reading:
1. Did you consider fuel flow too? Following the information given in the manual, there should not be fuel flow to the internal fuel system when the light is on due to missing tank pump pressure.
2. Do you know why the Tank pump switch TANKPUMP (NORM / AVST) on the right wall console was not modelled?

Thanks and kind regards,
TOViper

 

Tactical ping @Zabuzard:) 

[Zabuzard]

On 5/13/2023 at 11:21 AM, TOViper said:

1. Did you consider fuel flow too? Following the information given in the manual, there should not be fuel flow to the internal fuel system when the light is on due to missing tank pump pressure.

This is not modelled at the moment. If the Viggen is supposed to consume fuel (low pressure valve, inverted flight, and all the other modelled things ...), it will just consume from the external tank first - regardless of RPM > 70%. So the light in regards to the 70% RPM was and still is just cosmetic for now.

On 5/13/2023 at 11:21 AM, TOViper said:

2. Do you know why the Tank pump switch TANKPUMP (NORM / AVST) on the right wall console was not modelled?

I dont know. But presumably because the external tank, as of today, is not modelled to that detail in the Viggen.

Edited May 15, 2023 by Zabuzard