need data Sound of engine winding down during startup

[P3CFE]

After placing the throttle in idle during startup, there is the sound of engine winding down for a moment.

The rpm indication is increasing but the sound is of an engine decreasing in rpm.

 

[Lace]

Is that not the JFS winding down?

[BIGNEWY]

1 hour ago, P3CFE said:

After placing the throttle in idle during startup, there is the sound of engine winding down for a moment.

The rpm indication is increasing but the sound is of an engine decreasing in rpm.

 

Im not seeing any issue when I test, it sounds correct. 

Can you attach a short track replay and your dcs log 

If you are using any unofficial mods please remove them and run a slow repair. 

thank you 

[P3CFE]

WindDownSound.trk

The winddown sound is most obvious between 40 and 55 % RPM.

@Lace:
JFS runlight is still on, so thats not the cause, and IRL that is very differend an abrupt sound.

Regards

[BIGNEWY]

Hi, 

please include your dcs log after testing so we can look for issues 

thanks

3 minutes ago, P3CFE said:

JFS runlight is still on, so thats not the cause, and IRL that is very differend an abrupt sound.

if you have examples please link 

thanks

[P3CFE]

3 hours ago, BIGNEWY said:

please include your dcs log after testing so we can look for issues

Hello,

So, does nobody hear the sound i'm hearing ??.

To be more clear, it is not a complete winddown i hear, but after throttle to idle, in between about 40 to 55 % rpm, for a few seconds I hear the engine winding to a lower RPM.

After that 55% that the engine sounds normal again.

 

 

Edited August 1 by P3CFE

[MeanJim]

13 hours ago, P3CFE said:

Hello,

So, does nobody hear the sound i'm hearing ??.

To be more clear, it is not a complete winddown i hear, but after throttle to idle, in between about 40 to 55 % rpm, for a few seconds I hear the engine winding to a lower RPM.

After that 55% that the engine sounds normal again.

 

 

I hear it.  I assumed it's supposed to be the JFS shutting down.  You can hear it in videos of real F-16's starting up, but it's faster, higher pitched "pew" sound, but what I'm hearing in DCS is a lower pitch and longer sound.

In this video from in-cockpit, you can hear it right about 0:59:

This one from outside, you hear (and see a black puff) around the 2:12:

 

For comparison I just recorded a startup in DCS from inside the cockpit and outside.  I've never started the jet from outside before, and (to me) it's much more noticeable from outside.

Inside I hear it begin right at 0:33.  While watching it back I also notice it happens right as the FLCS PMG and TO FLCS lights go out, and it's 2 seconds later when the JFS switch cuts off:

Outsie I hear the sound begin between 0:38 and 0:39:

 

[P3CFE]

Thanks, yep..the real thing sounds about wright...

In DCS the lower pitch and longer sound is what i meant.

It can't be the JFS because that would be way to early in the startup cycle.

Also the green RUN light remains on during the winddown sound.

So the JFS is still running.

Thanks for the reply

[Archangel44]

For the last two and a half years that I’ve been flying the F-16C here on DCS, it’s always sounded like that to my ears.

I don’t know if that is real life start up sound but to me it has always sounded like that here on DCS.

Hope this helps.