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Boeing 707 burns fuel even while sim is paused

Postby RJ5576 » Tue Mar 13, 2018 10:16 pm

I find this vexatious, particularly on transoceanic flights. On such long flights, real-life obligations tend to interpose, so I have to pause. When I return, it often happens that my fuel has been completely exhausted. Nothing else happens when FG is paused, but fuel continues to drain without advancing the plane a meter.
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Re: Boeing 707 burns fuel even while sim is paused

Postby legoboyvdlp » Tue Mar 13, 2018 10:48 pm

Probably it calculates fuel using Nasal which is not stopped when the sim is paused, the program thinks the engine is still running at that thrust setting even when paused.

The developer will have to confirm and if necessary fix.
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Re: Boeing 707 burns fuel even while sim is paused  

Postby RJ5576 » Wed Mar 14, 2018 12:40 am

I modified the 707 code so that fuel freeze is activated whenever the sim is paused (to keep from burning fuel), and so that crossfeed is disabled whenever fuel freeze is activated. This seems to solve my problem.
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Re: Boeing 707 burns fuel even while sim is paused

Postby legoboyvdlp » Wed Mar 14, 2018 10:21 am

That's great :)
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Re: Boeing 707 burns fuel even while sim is paused

Postby asr » Sat Mar 31, 2018 12:30 pm

See the small patch necessary to fix the issue:
https://github.com/adriansr/707/commit/ ... 95e17c7b97
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Re: Boeing 707 burns fuel even while sim is paused

Postby Lydiot » Sat Mar 31, 2018 3:05 pm

Also, did the way it balances or transfers fuel between tanks change from earlier versions? With an auto start and opening the valves I sometimes ran out of fuel to two engines in the new version but not an older one.
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Re: Boeing 707 burns fuel even while sim is paused

Postby asr » Mon Apr 16, 2018 9:47 pm

Yes, the fuel feed was made realistic at some point.

Now you need to manually transfer fuel from the central tank. The receiving tank(s) need to have their fuel pumps turned off so that they don't oppose the flow of fuel.

It is a bit tricky I still get an engine starved from time to time due to lack of fuel pressure when starting the transfer
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