GAU-12 gunpod engine based firing restrictions enabled.

[kotor633]

Hello,

With today's update, the restriction mentioned in the subject became active. But what exactly does this restriction mean?

[ChickenSim]

The GAU-12 is pneumatically actuated, and requires at least 60 PSI of bleed air generated by the engine in order to fire.

 

In order to generate 60 PSI of bleed air, you need to set a minimum throttle (Fan RPM %) setting. This scales with speed and altitude.

 

At sea level, traveling M 0.8 or more, you need a minimum power setting of around 60%. At sea level, slower than M 0.8, you may need up to 70%.

 

At high altitude (20,000+), you could need upwards of 90% to fire the gun.

 

Consider keeping that throttle full during an attack run.

[kotor633]

h okay, wow ... I wasn't aware of it. But it is also the only module in DCS where it is. In any case, thank you.

[diegoepoimaria01]

Thanks, we did run into this issue yesterday ... enemy ground troops was VERY happy :P

[kotor633]

Yes, I felt the same way yesterday ... "why doesn't this bastard fire, I've done everything right so far ..." :music_whistling:

[Fri13]

The GAU-12 is pneumatically actuated, and requires at least 60 PSI of bleed air generated by the engine in order to fire.

 

In order to generate 60 PSI of bleed air, you need to set a minimum throttle (Fan RPM %) setting. This scales with speed and altitude.

 

At sea level, traveling M 0.8 or more, you need a minimum power setting of around 60%. At sea level, slower than M 0.8, you may need up to 70%.

 

At high altitude (20,000+), you could need upwards of 90% to fire the gun.

 

Consider keeping that throttle full during an attack run.

 

This is again a exemplary post about how to report a new features by explaining the technical reason behind the system.

 

[Gizzy]

 

This is again a exemplary post about how to report a new features by explaining the technical reason behind the system.

 

Agreed 100%... at times I just wish the info feeds from RB on changes were better than what they are.... but then we are getting fixes / changes so I am happy...

[baltic_dragon]

You’ll get that covered in manual, though I can only do that after things are done. I will also update the training mission to include that info..

[kotor633]

Hello Baltic, it's good that you will incorporate this into the training mission. But could you give a little update how far the manual is for the Harrier. When do you think we can expect it roughly? (Without wanting to nail you to it ;-))

[Harlikwin]

h okay, wow ... I wasn't aware of it. But it is also the only module in DCS where it is. In any case, thank you.

 

Well, no other module uses the GAU-12. The M61 is electrically operated in comparison. Other guns are recoil operated.

[RAZBAM_ELMO]

The new gun restrictions are theat the gun will not fire under 70% at Sea Level, this increases as you increase in barometric altitude.

[ChickenSim]

@RAZBAM_ELMO I just tested it out, it appears at face value to be accurate to the graph in the TACMAN.

 

I dove down to just above sea level and commanded 65% FAN RPM, and was able to fire the gun successfully until my speed bled down below a certain point.

 

Then I set 69% FAN RPM and held the trigger down as I accelerated, and the gun eventually started firing again.

 

Now to add gun jams and failures to the list for doing what I just did trying to get the gun to cycle without the right amount of air pressure (it'll try!). :)

[RAZBAM_ELMO]

Probably at the end of development. Probably will be treated the same way every other failure would.

 

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