Hello, thanks for videos. Could you show high speed launch? R-73 fail a lot when launching at higher speeds, you have to lead them like you would AIM-9L otherwise they spin.
What does focal plane mean for an ir detector
Same as photography, area where the detector is most focused iirc
In my testing with other TVC missiles this does help yeah.
The other thing I prefer to do for it, is to really mess with time to gain values. This doesn’t just help the missile stay stable, but it also really helps it pull harder off the rail in many situations. For instance i use:
timeToGain0:p2=0.00, 0.55
timeToGain1:p2=0.315, 1.1
timeToGain2:p2=0.80, 0.8
timeToGain3:p2=1.25, 0.865
timeToGain4:p2=2.4, 0.945
Basically, the first part is so that way the missile will not start steering sharply, but rather gain as it gets speed just after launch, fixing issues with ultra low speed launches. Then it scales up to above the base amount, causing it to pull very high AoA, causing a very sharp turn. Before again reducing itself, causing the excess AoA to be partially maintained, while smoothly transitioning to a more forward flight path.
There are a few issues with it, where in some situations it will miss, particularly when near AoA limits in very HOB shots., and the PID logic does have to be tuned to work with it. Tuning variable PID logics should fix the remaining issues though, I simply haven’t gotten around to it. (Leviathans broke all user missions for me, lmao).
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I’m curious if this can be forwarded in a bug report.
Would love to see if it gets accepted
Cdk is borked right now yes (look at the rudder on my ef2000 lol).
There are a lot of ways you can try to improve the spin out, stability and maneuverability of TVC missiles but with pretty much all of the “fixes” I tried (and trust me i tried a lot of things) some issues remain.
As an example copy paste r73s and than remove WdK:p3 = 0.1, 0.1, 0.1; change the pid0 time from 3 to 5.5; remove pid1 and pid2 entirely; rename pid3 to pid1. This is a kind of universal “fix” that does work on r73s micas and i think sraams also (missiles wont spin out the same way any more, but they still waste a lot of energy and pull way to much aoa and still wobble).
But here is the real issue with this “fix” (and probably the timetogain one as well). Missiles with a small caliber and low acceleration like aim9x and iris-t produce less lift at high aoa than missiles with a large caliber such as mica and r73. So what ends up happening is that this missiles drift across the sky at 90° aoa but don’t actually turn. The best thing about it is that if you increase the wingAreaMult it only makes them spin out sooner instead of increasing their lift.
Spoiler
On another note here are mica and sraam where the only thing i changed was add CyMaxAoA:r = 90 and under guidanceAutopilot add limitAoa:b = true and aoaMax:r = 40
https://youtu.be/tONMMxI_X6U
https://youtu.be/LsFJ6vpCa5s
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0:50 thats ridiculous
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I mean 90 degrees is too much, I generally aim for between 30-40 and it gives much better results, particularly with my time to gain method.
Too much AOA actually decreases a missile’s turning performance to an extent. Firstly from just being less ideal to produce lift. But also due to the vectoring angle to keep it stable, your engine will effectively be less efficient due to its corrections at said angle / the thrust vector relative to CoM / direction of travel.
Yours deffinitly seems more stable at higher AoAs then mine does, i wonder how it handles the different ohysics rate on live servers to closed ones.
Also here are two aim9l missiles with mica tvc copy and pasted onto them. They are identical in every way except one of them has aoa limits while the other doesn’t.
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Here is the funny thing. If you are only using CyMaxAoA than less than 90 is prob better BUT if you also set the guidanceAutopilot to 40 (and leave the other one on more than 40 (90 in this case)) the missile will be able to pull more while still usnig only 40ish degrees of aoa.
On r73s and sraam i set both to 40 but on every other missile i set the first one to 90 and the second one to 40
cymaxaoa is the cl at max aoa, not an aoa limit. setting it to arbitrarily high values will just end up giving it impossible lift coefficients
Eventually, hopefully Russia finally finishes their k-30/ modernization of it called product 300m. Looks like a asraam but with thrust vectoring and dual mode
