Engine Diagnostics Script

[GTFreeFlyer]

Here you go guys.  A quick SP air start with a script I made to view real time fuel burn, fuel efficiency, airspeed and more.  
 

Spoiler alert:  It is actually pretty close to the published charts. 

Also FYI, the image below is just a cover image.  Diagnostics in the mission are not as pretty.  It's just the standard text overlay you are used to seeing.
 

https://www.digitalcombatsimulator.com/en/files/3346516/

Edited August 22 by GTFreeFlyer

[Rudel_chw]

Thanks, really nice for using when exploring the aircraft limits.

 

I'm currently on the first stages of editing a training mission for Engine management, using a Climb to 25,000 feet as a fixed situation to be able to monitor it using triggers. My purpose is to learn the proper use of all controls: Super Charger, cooling flaps, throttle, mixture, with the mission reminding me of operating the blower properly as we climb, learn to keep an eye on temps, etc. To give a worthwhile mission objective and add a sens of urgency, I intend to record the time it takes to get to 25,000, the less time the higher the score  

 

because of this, I wonder if you could add to the script some engine management parameters, like cyl temp, oil temp, etc  ... it would help me a lot while I develop my mission, as reading the gauges while flying makes me kind of lose focus on my aircraft handling  

 

best regards,

 

Eduardo

[GTFreeFlyer]

1 hour ago, Rudel_chw said:

Thanks, really nice for using when exploring the aircraft limits.

 

I'm currently on the first stages of editing a training mission for Engine management, using a Climb to 25,000 feet as a fixed situation to be able to monitor it using triggers. My purpose is to learn the proper use of all controls: Super Charger, cooling flaps, throttle, mixture, with the mission reminding me of operating the blower properly as we climb, learn to keep an eye on temps, etc. To give a worthwhile mission objective and add a sens of urgency, I intend to record the time it takes to get to 25,000, the less time the higher the score  

 

because of this, I wonder if you could add to the script some engine management parameters, like cyl temp, oil temp, etc  ... it would help me a lot while I develop my mission, as reading the gauges while flying makes me kind of lose focus on my aircraft handling  

 

best regards,

 

Eduardo

Great idea!  However, I don't know how to look up those values with lua at the moment.  If you can provide that info I can try to integrate it.

Also, I'm a big fan and advocate for pilots conducting instrument scans properly, especially in this warbird.  I think moving some of the data from the instrument panel to the upper corner will teach bad habits, and might be a "cheat" for the mission you want to make which includes scoring.  You might end up climbing quickly, but what good is the pilot if they never had to look at the instruments and handle the aircraft properly at the same time?  Just my 2 cents.  Cheers.

Edited August 22 by GTFreeFlyer

[Rudel_chw]

2 hours ago, GTFreeFlyer said:

Also, I'm a big fan and advocate for pilots conducting instrument scans properly, especially in this warbird. 

 

You are correct, didn't think of that

  .. on my mission I intend to use X:COCKPIT triggers to inspects these parameters that the Module offers:

 

 

Eduardo

 

 

[gdx65]

On 8/22/2025 at 6:37 PM, Rudel_chw said:

 

You are correct, didn't think of that

  .. on my mission I intend to use X:COCKPIT triggers to inspects these parameters that the Module offers:

 

 

Eduardo

 

 

I have noticed with the Corsair that once one engage in a dogfight or action (2700RPM and throttle as required), in order to avoid the engine trip, I open the cowling flaps somehow half way or by monitoring the cylinder head temperature, then the oil cooler and intercooler open half way or even fully open. Less than that the engine will trip. 

[Cool-Hand]

Nice I'll definitely have a look at this thanks for putting this together! I'm kinda scripting illiterate, would this be possible to do for other warbirds like the p-47? 

[GTFreeFlyer]

40 minutes ago, Cool-Hand said:

Nice I'll definitely have a look at this thanks for putting this together! I'm kinda scripting illiterate, would this be possible to do for other warbirds like the p-47? 

Absolutely. There’s a note about that in the mission description.  In short, you’ll need to pull the script out of the .miz and modify the fuel tank capacity, save, reload into the .miz.  The script is well-documented and you’ll see exactly what to do once you open it. 

[Super Wabbit]

Question about drop tanks.  The documentation says to set the FUEL_TANK_CAPACITY to the internal fuel tank total including external tanks.  So if I run the Corsair with 2x 150 Gal drop tanks, I should set this to 537.  When I do this it's now reading that I have 1227 gallons with the drop tanks equipped.  If I unequip the drop tanks in the same mission, the script displays 537 gallons.  If set the fuel capacity in the script back to 237, the internal fuel level, and then attach 2 150 gallon tanks, it reads 541 gallons.  That's still not exactly correct but it's close.

So should that value only be set to the internal tank capacity?

 

[GTFreeFlyer]

8 hours ago, Super Wabbit said:

Question about drop tanks.  The documentation says to set the FUEL_TANK_CAPACITY to the internal fuel tank total including external tanks.  So if I run the Corsair with 2x 150 Gal drop tanks, I should set this to 537.  When I do this it's now reading that I have 1227 gallons with the drop tanks equipped.  If I unequip the drop tanks in the same mission, the script displays 537 gallons.  If set the fuel capacity in the script back to 237, the internal fuel level, and then attach 2 150 gallon tanks, it reads 541 gallons.  That's still not exactly correct but it's close.

So should that value only be set to the internal tank capacity?

 

 Interesting.  The script uses the built in function to get the fuel, which is returned as a percentage (value zero to one).  What I’m doing with the script is simply multiplying that with the total capacity that you set in the script.  I’ll have a look to see what’s going on later, but what I’ll do is simple and you can try if you want.  Set fuel capacity to zero in the script and then I’ve coded it to show the text in the mission as percentage instead of gallons, and it will give you an idea what’s happening.

It almost sounds like DCS is giving a value of more than 100% fuel remaining if you are carrying the drop tanks, which I did not expect.  I didn’t test for this, as my speed trials were with a clean configuration.   

 If you get to it before I do, let us know what you’ve found.  Thanks for the feedback

Edited 5 hours ago by GTFreeFlyer