fixed [FIXED] Help Me, Alternators failing!

[felixx75]

Happend to me too (ALT 2 Warning). Attached a picture of my flight parameters. Was just cruising.

Edited July 27, 2022 by felixx75

[felixx75]

About 5 minutes later this happend
ALT1/2, TR1, SEC, BP G, BP D TR2, CAP, C AERO and MODUL
Was still cruising...

Edited July 27, 2022 by felixx75

[bones1014]

I've gotten alternator 2 to fail twice while cruising above 20k feet.

[Rudel_chw]

5 minutes ago, bones1014 said:

I've gotten alternator 2 to fail twice while cruising above 20k feet.

 

It happened after you aplied today's patch or before?

[bones1014]

2 minutes ago, Rudel_chw said:

 

It happened after you aplied today's patch or before?

once before and just 10 minutes ago after patching

[felixx75]

4 minutes ago, Rudel_chw said:

 

It happened after you aplied today's patch or before?

For me too, before the patch and after the patch. Same mission, same time.

Edited July 28, 2022 by felixx75

[Rudel_chw]

28 minutes ago, bones1014 said:

once before and just 10 minutes ago after patching

 

27 minutes ago, felixx75 said:

For me too, before the patch and after the patch. Same mission, same time.

 

Thanks for the testing, I have not yet found this issue and was looking forward to a fix for it on todays update, sad that it is not the case ... let's hope that the developer is aware of it and working on a fix.

[bones1014]

On 7/26/2022 at 5:12 PM, Breakaway said:

Just had Alt2 light on in Persia (Hoggit Server) after holding a 30° AoB Left Orbit for a few minutes at FL270 / 350kt IAS. 

Loadout:

1x centerline tank

2x R530F EM

2x Aim9 Juli

Weather:

SFC Temp +34°C

QNH 1013 hPa

Pressure lapse rate 29ft/hPa, FL270 = 931 hPa

Wind 4 m/s (7kt) 

 

Edit: Just to add I havent experienced this Issue in Caucasus.. yet

 

I fly mostly caucasus. Have only done so in the F1. Had a double alternator failure today. very annoying.

[turkeydriver]

Page 116 of the flight manual.   The engine regulates alternator heat via BOV that vent the heat.  The speed band increases with altitude but you should remain above Mach .6 to stay out of the zone where alternator failure will occurs due to negative pressure in the intakes…..I took a pic of the ref buts over 5 mb and can’t post it.    The Failure model might be need a little tuning but it appears you can’t cruise at slower speeds without risking alternator failure.   

Edited July 31, 2022 by turkeydriver

[statrekmike]

1 hour ago, turkeydriver said:

Page 116 of the flight manual.   The engine regulates alternator heat via BOV that vent the heat.  The speed band increases with altitude but you should remain above Mach .6 to stay out of the zone where alternator failure will occurs due to negative pressure in the intakes…..I took a pic of the ref buts over 5 mb and can’t post it.    The Failure model might be need a little tuning but it appears you can’t cruise at slower speeds without risking alternator failure.   

 

  I just experienced a alternator 2 failure while cruising at about 35,000 feet and going mach 0.8. 

[turkeydriver]

18 minutes ago, statrekmike said:

  I just experienced a alternator 2 failure while cruising at about 35,000 feet and going mach 0.8. 

Read page 116- angels 35 and above has insufficient air to allow BOV to vent the heat all the way out to Mach 1.3.  Works as intended.

[dudeman17]

2 hours ago, turkeydriver said:

Page 116 of the flight manual.   The engine regulates alternator heat via BOV that vent the heat.  The speed band increases with altitude but you should remain above Mach .6 to stay out of the zone where alternator failure will occurs due to negative pressure in the intakes…..I took a pic of the ref buts over 5 mb and can’t post it.    The Failure model might be need a little tuning but it appears you can’t cruise at slower speeds without risking alternator failure.   

 

All my testing has taken place within the blue dot on this image. The issue is present every single time. Regardless of the map.

 

QuiGon referenced this page immediately to my first post. While important information, there's a serious flaw currently. 

Edited July 31, 2022 by dudeman17

[turkeydriver]

13 minutes ago, dudeman17 said:

All my testing has taken place within the blue dot on this image. The issue is present every single time. Regardless of the map.

 

QuiGon referenced this page immediately to my first post. While important information, there's a serious flaw currently. 

 

Then the Envelope for alternator failure needs to be adjusted.  Good test

[felixx75]

4 hours ago, turkeydriver said:

Read page 116- angels 35 and above has insufficient air to allow BOV to vent the heat all the way out to Mach 1.3.  Works as intended.

Happened to me @25000ft @M 0.9... 

I don't think, that it works as intended.

[bones1014]

25k feet at 0.8+ mach and both alternators failed.

[gulredrel]

Track attached. Alt.2 failed at around 32500ft well above Mach 0.6 and outside of the critical envelope shown in the diagram. Track attached.

@Flappie or @BIGNEWY Could you please move this thread into the bug section? Several tracks and user reports should be enough to investigate further, I guess.

Thanks

Jens

Mirage_F1_Cauc_alt2_fail_32500ft_above_M0.6.trk

 

Edited August 1, 2022 by gulredrel
added screenshot

[Shmal]

In my flight the failure with Alt 2 happens avery time we fly mission route at high angels, like 28-32. It looks like they need to tune the failure with chart from manual in proper way.

 

[gulredrel]

Looks like, yes. Did a short high alt / high speed flight up to M 2.0 in 36000ft and got no error.

Something not correct with the boundaries, with accumulating time and not properly resetting this time we spend in the critical region, I guess. If proper cooling is available in a different flight regime, this should also save your alternators.

[turkeydriver]

On 7/30/2022 at 9:09 PM, dudeman17 said:

3 hours ago, gulredrel said:

Looks like, yes. Did a short high alt / high speed flight up to M 2.0 in 36000ft and got no error.

Something not correct with the boundaries, with accumulating time and not properly resetting this time we spend in the critical region, I guess. If proper cooling is available in a different flight regime, this should also save your alternators.

Is it possible they simulate the load on the alternators?  For the people with failures, are you in an A-A mission with missiles selected and prepped? 

[felixx75]

9 hours ago, turkeydriver said:

 

Nope, I was just cruising around.

[gulredrel]

3 hours ago, felixx75 said:

Nope, I was just cruising around.

same for me. only had Magics at the wing tips, but master arm and all the armament buttons off. I think, radar was on, yes, being outside the critical zone, this shouldn't be a problem loadwise.

 

Thanks for moving and marking as reported.

Edited August 2, 2022 by gulredrel

[Erk104]

This occurred to me as well ALT2 First then about 30 minutes later Alt1 dies... Engine remained on  landed safely.  I wonder if its the air temp.  I was on the Nevada Map with OAT at 35 degrees Celsius.

Ground crew will not repair either.  I always have to get a new jet.

Edited August 4, 2022 by Erk104

[statrekmike]

This is really the kind of thing that will need a hotfix as soon as possible. It is a major problem.

[enigma6584]

Same thing happening to me repeatedly.  Cruising at FL20 and above at .8 mach.  Obviously, the Developers know about this.  Was wondering whether any of you were able to get alternator restarted?  I've dived down to lower altitude, like FL15, speed up to mach '8+, wait for a while then turn back on alternator.  Alternator still shows caution.

[felixx75]

11 minutes ago, enigma6584 said:

Same thing happening to me repeatedly.  Cruising at FL20 and above at .8 mach.  Obviously, the Developers know about this.  Was wondering whether any of you were able to get alternator restarted?  I've dived down to lower altitude, like FL15, speed up to mach '8+, wait for a while then turn back on alternator.  Alternator still shows caution.

Never got it restarted...