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MarwanGharib avatar image
MarwanGharib asked MarwanGharib answered

Jet engine startup speed: No entries in engine.cfg seem to have any effect.

Hello team ,

Engine start up time is always 50 seconds , The following entries are not changing the timing even though I tried extremely small and extremely large values:

starter_N1_max_pct
starter_N1_rate
n1_start_max_rate
n1_start_combustion_max_rate


Am I looking at the wrong location configuring this?


Note: using modern jet engine cfg

use_commanded_Ne_Table =0
use_corrected_N2_from_FF_table =0
use_n2_to_n1_table =0
use_old_fuelflow_simvar =0
aircraft
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FlyingRaccoon avatar image
FlyingRaccoon answered

Hello @MarwanGharib

Just wanted to let you know that this has been addressed in SU9. You can test it if you have access to beta SU9.
Here are some additional parameters:
1649677727851.png

Let us know if that solves your problem.

Regards,
Sylvain


1649677727851.png (456.8 KiB)
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FlyingRaccoon avatar image
FlyingRaccoon answered

Hello @MarwanGharib

You are right, there seems to be additional constraint on top of configuration to adjust this timing.
This lacks flexibility and this is also a problem internally. We plan to have a look at it and see how we can improve this.
I'll come back to you when we move forward on this.

In the meantime, there's not much you can do I'm afraid.

Regards,
Sylvain

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MarwanGharib avatar image
MarwanGharib answered

Awesome stuff Sylvian ,

Tested and working,

n2_starter_max_rate seemed to be the parameter that had the effect on the electric turbine engine startup.

Thanks alot for your follow up

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