Unsuccessful engine relight

[Akula67]

Hi,

 

Every time I attempt to relight my engine after it had flamed out, I end up doing a deadstick landing instead :doh:

 

Here is how I attempt to relight :

 

1) Climb to approx 15000m : RPM drops, nozzle closes, engine dies

 

2) descend below 8000m, switch fuel regulator to MAN

 

3) press engine restart button : throttle moves to idle position but nothing seems to happen engine-wise

 

4) press starter switch : GTS starts, engine RPM increases to around 40% but then drops abruptly back to 22% when GTS disengages,

 

I am usually around Mach 0.6 and below 8000m when engaging GTS so I should be in the relight domain.

 

I also tried to advance the throttle mid-way between idle and MIL before the GTS stops but engine RPM always drops :cry:

 

Any clues to what is happening to my poor engine ?

[TOViper]

..

...

3) press engine restart button : throttle moves to idle position but nothing seems to happen engine-wise

...

..

 

This specific issue is listed here, I created this about 14 months ago:

https://forums.eagle.ru/showthread.php?t=183313

You cannot press the button with the mouse in some situations.

I dont know the actual status about this issue.

Edited April 7, 2018 by TOViper
wrong information given

[TOViper]

What I recently noticed after engine fail / flame out is that the HUD shows some strange the heading values (32-bit?), after all navigation systems have been restored successfully on ground / or in air (no errors on alerting panels):

 

[ATTACH]182188[/ATTACH]

[Akula67]

Hi Viper, thanks for your reply, I understand now why the engine start button was ineffective.

 

Did you manage to complete a successful engine relight using the start switch ?

 

Cheers !

[TOViper]

Hi Viper, thanks for your reply, I understand now why the engine start button was ineffective.

 

Did you manage to complete a successful engine relight using the start switch ?

 

Cheers !

 

With the normal "START" switch yes, of course. 1000 times :music_whistling:

Most of the time I simply reduce speed and AOA, and restart it (hoping no MiG-21 is around laughing its pants off while I am playing the piccolo ...) :P

But not with the ATERSTART (restart) button.

Following your post I managed today to depress it somehow with the mouse, don't ask me how I did ... wasn't able to reproduce this :noexpression:

It must have something to do with the view angle or so ... its hard for me to do it since I don't use any 3d vision googles, just using middle button of the mouse to change my viewpoint accordingly.

Maybe you have to try this out in more detail, and give us feedback on the ATERSTART pushbutton.

Edited April 7, 2018 by TOViper

[Akula67]

Okay I think I figured it out,

 

Not only does the ATERSTART button close the HP fuel valve, it also prevents further engine restarts even if you unlock the throttle by clicking on it. :huh:

 

It seems like after you presed ATERSTART, the fuel valve is permanently shut no matter what you do next. :doh:

 

Hence, as I was always following the procedure and trying ATERSTART first, I could not perform any sucesful relight, even if I used the start switch afterwards !

 

So...don't touch that little black button if you want to keep your engine alive ! :pilotfly: