4.11 General debugging

[Fall_Pink?]

4.11.1 AI / Jet bug:

Jets like He162 and Me262 can't take off anymore. They overheat when they're half way the runway and have diffculties gaining altitude. They fail to climb and/or their engines catch fire. Tested with he162 and single mission 'rapid strike mission'. With the rapid strike mission, the first he162 cannot gain sufficient alititude and crashes into the woods at the end of the runway.

edit: small correction. Bug is also present in 4.11 + hotfix. Base closure with YP80 catches fire when taking off and 'rapid strike' mission produces the same result. I.e. he162 is unabnle to take off and it's engine starts to burn.

Rgs,
Mark

[Luno13]

I just made tests and I have no issues with the jets. Make sure to increase power slowly. Too fast and the engine will catch fire.

Also, I tend not to add more than 80% power, to avoid overheating.

Acceleration is slow, and jerking the plane off the runway won't help. I pull back on the stick just enough to raise the nose. The plane will roll on the main wheels until it's "ready" to fly, and will lift off on its own at the right speed. Raise gear immediately, lower the nose to accelerate and raise flaps in increments.

[Fall_Pink?]

Originally Posted by Luno13

I just made tests and I have no issues with the jets. Make sure to increase power slowly. Too fast and the engine will catch fire.

Also, I tend not to add more than 80% power, to avoid overheating.

Acceleration is slow, and jerking the plane off the runway won't help. I pull back on the stick just enough to raise the nose. The plane will roll on the main wheels until it's "ready" to fly, and will lift off on its own at the right speed. Raise gear immediately, lower the nose to accelerate and raise flaps in increments.

Luno13,

Manually there will be no problem with any jet I guess and I think it's the auto pilot that messes it up some how.

I tested the he162 'rapid strike mission' with auto pilot enabled for take off. I checked a couple of times and nearly all of them crash into the hillside.

Please check if you get the same behavior with this mission.

Rgs,
Mark

[JtD]

The Heinkels indeed crash, but it already happened in 4.09. Do you know the last version it worked with? Overheat in 4.11 came too quick for some jets, but this was corrected in 4.11.1 and should no longer be an issue. I haven't seen one catching fire on take off, yet.

[Fall_Pink?]

Originally Posted by JtD

The Heinkels indeed crash, but it already happened in 4.09. Do you know the last version it worked with? Overheat in 4.11 came too quick for some jets, but this was corrected in 4.11.1 and should no longer be an issue. I haven't seen one catching fire on take off, yet.

I did not test it with 4.09, so I can't confirm that.

I tried the misison on 4.11 + hotfix and 4.11.1 only. With both versions they crash into the hillside. I'm not sure if overheating has been fixed for jets yet when auto pilot is in control. The overheating warning appears too early I guess.

To check overheating and autopilot behavior, I did some other tests with other fighters as well (Do335-v13 and La7 from single mission section all with AP enabled) and they never seem to overheat. Not during take off and not while they fly their waypoints. In this mission La7 never overheats, and if it does then only during engaging enemy fighters and for a very short duration.

With the Do335 mission, it reached 550 IAS all along it's waypoints and an overheating warning message never appeared.

I can't assess if this is 'real' or not. I just find it weird that some planes, when flown by AP do not have any overheating issues, while some others have them so quickly.

Rgs,
Mark

[Aviar]

Originally Posted by Fall_Pink?

4.11.1 AI / Jet bug:

Jets like He162 and Me262 can't take off anymore. They overheat when they're half way the runway and have diffculties gaining altitude. They fail to climb and/or their engines catch fire. Tested with he162 and single mission 'rapid strike mission'. With the rapid strike mission, the first he162 cannot gain sufficient alititude and crashes into the woods at the end of the runway.

edit: small correction. Bug is also present in 4.11 + hotfix. Base closure with YP80 catches fire when taking off and 'rapid strike' mission produces the same result. I.e. he162 is unabnle to take off and it's engine starts to burn.

Rgs,
Mark

There is no bug here. The jet AI takes off perfectly fine in 4.11.1. Even the Player's plane (in offline missions) will take off correctly if the Autopilot is used. I'm not sure what your problem may be.

I tested the Rapid Strike mission and the jet AI all take off just fine. However, they do crash into the hill. This may be due to new FM's.

I tried a quick workaround and it worked. Just open the mission in the FMB and give all the 262 and 162 flights 65% fuel instead of 100%. This makes them lighter and they don't crash anymore.

Aviar

[Fall_Pink?]

Originally Posted by Aviar

There is no bug here. The jet AI takes off perfectly fine in 4.11.1. Even the Player's plane (in offline missions) will take off correctly if the Autopilot is used. I'm not sure what your problem may be.

I tested the Rapid Strike mission and the jet AI all take off just fine. However, they do crash into the hill. This may be due to new FM's.

I tried a quick workaround and it worked. Just open the mission in the FMB and give all the 262 and 162 flights 65% fuel instead of 100%. This makes them lighter and they don't crash anymore.

Aviar

Aviar,

It looks like these new patches thus created some incompatabilities with older missions which need fixing. Either by changing the missions or having another look at the overheating and AP engine management part.

Is it realistic a He162 overheats when it's only halfway the runway on take off?

I'm not aware of any new FM's for these planes. Did 4.11.1 introduce a new fm for these types?

Rgs,
Mark

[JtD]

Bug's been present at least since 4.09.
FM's haven't been changed for the He 162 for ages.
Overheat in 4.11 didn't work well with AI for some jets.
Overheat in 4.11.1 works with AI in all jets.
Jet engines overheat differently than piston engines, both in real life and in game.

To sum it up, either the He 162 FM needs to be fixed in which case real life data on low speed acceleration, handling and take off distance would come in handy, or very simple, the mission needs to be adjusted.

Unless you want to research He 162 performance, don't spend sleepless nights over the issue.

[Ace1staller]

I have a problem with the Quick mission builder. It gives me a blank screen when ever I click the button however this was before the release of 4.11.1 and I'll soon post a picture to show my problem.

[JtD]

Have you tried deleting the .last.quick file from the Quicks folder in your il-2 installation?