Iris-t slm

So realistically, what are we supposed to do?

We have come to a point where things are so modern that it’s rare to even have a single reliable source.

Gaijin just decided an arbitrary value that makes no sense and doesn’t meet any of the data points and tells us that we need to find something?

The missile can hardly reach 30km kinematically and yet the “Effective Range” is given at 40km.

The Range numbers are primary sources, right? So why don’t they at least try to make it meet the most basic data points?

For now it doesn’t even hit a target at 15km reliably, let alone 30 or 40km.

I have no idea, the only thing i know is that i haven’t personally seen more than one secondary source state mach 3 for the SLM. I don’t have any influence on those choices at all. the SLM being faster than the SLS makes logical sense, but sources are needed to be able to report it.

Result, no longer not enough data, now its just an Dublicate

Well we have already given another source for the speed…

If the manufacturer says it takes 60 seconds to target and it’s currently not even close to matching that, then I don’t see why they can’t use that.

It also clearly states 12km altitude before reaching a target 30km out. The ingame one would run out of energy to do anything at 12km.

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I don’t know, i don’t handle bug reports, but i’m guessing it is because the time to distance doesn’t specify enough surrounding information (like maneuver amount, speed of target, altitude or similar things just as random examples) for it to be reliable enough to get a number out of.

Could you link that source? i haven’t personally seen it yet.

thats what confuses me, even if we were to take a stationary target into account it would need to go faster than mach 2, im literally talking about that there is not a single scenario where it could reach that far in 60sec with only mach 2, but i understand, things would probly be better with people like you in the bug reports and not whoever is in charge of it right now

I agree that you can’t get a precise number out of it… BUT

If I tell you my car can reach a place in a hour drive from my house and then you try it and it takes twice that time even while flooring it the whole time then you see the issue, right?

There isn’t a way to get a specific speed. But you can create some loft profiles, play with the weight and thrust and adjust the numbers until they match that report roughly. They have guessed a lot more than that with other vehicles, so I don’t see the reason for not doing it here as well.

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Could you link the source?

image

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as peer post above,

the source about the speed that you ment (i think) https://www.luftvarn.se/vlv/1503.pdf

and the source about time to target

We all know which mod it is lmao, the one they removed names from the site for

Yeah that doesn’t say much at all sadly. "Engaged at " does that mean hit at that distance? does that mean the missile was fired when the target was at that distance and the target is then moving away from/towards the launcher? at what speed is the target flying towards or away from the launcher?

If the target is flying mach 1 towards the launcher for example then it travels 20 km in those 60 seconds so the missile meets it at only 10 km away (Random numbers just to show what i mean). There isn’t enough information at all to get any speed from that statement.

grafik
… i mean thats what it says here no?

but i get what you mean, its still frustrating having to argue about the speed when there are so many sources saying otherwhise, just sad for us that diehl itself doenst put it into the marketing

It doesn’t say at what distance the target was hit though. the only time distance is mentioned is “engaged at”. it doesn’t say what distance the target was hit. and i can’t personally see them stating that those are the same, it’s an assumption from the reader which sadly isn’t good enough for a source.

I would like to point out that i am personally also on the same page as you guys, i want it to be mach 3 as that is the number i see almost everywhere, but i have yet to see more than one reliable source for it that isn’t third party or, a wiki page or a random blog. I did try to find a source for it myself just a few days ago but sadly couldn’t.

Linked it.

If you do the most basic math:

Current modelled top speed of IRIS-T SLM:

710m/s, basically Mach 2.

Time to target 60 seconds.

Distance travelled at Mach 2 after 60 seconds:

Roughly 42km.

You see the issue here?

Even if the missile flew Mach 2 for the entire duration of the flight and did so in a perfectly straight line the missile would barely reach it’s effective range in time.

Now the distance to the target was “more than 30km” away, if we assume it was 31km and if my napkin math is correct than reaching 12km altitude somewhere during the flight increases the distance travelled to between 37km-44km.

That means the missile flew 37-44km in 60 seconds which gives an average speed of nearly Mach 2. Not a max speed of Mach 2.

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i tried that aswell (current speed to 30km ) and time to 30km from the source, its about 60% difference, if you were to aply 60% to the 710m/s currently in game, o look we get ~1100ms and 60% is kindoff an underestimate considering our target isnt moving at all while theirs is

but getting an accurate speed from this math is impossible, however 60% is not just a simple error

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I don’t. The source states maneuvering target, it doesn’t state in what direction, it doesn’t state at what speed.

See this post:

It doesn’t say that though. it never states how far the missile flew, only at what distance the target was at when fired.

Play a simulator that doesn’t place national bias above realism.