R-27ER update?

Again to conclude...

If you look the results, the Aim-7m which we know is as accurate as possible,

was able to have ~30-40% higher turn rate with ~55% shorter turn radius, pulling 3x times AoA (thus much much larger drag) with the same G and much lower speed loss ( 9% vs 39%).

I can't find any logical reason why the R-27r would have such bad turning performance

Speed loss is all about the rocket motor, however I agree about the rest.

Nice findings. Could Chizh have a look again?

The lift coefficient on the R-27 is very small compared to other missiles - 0.4 and 0.5 where other missiles are 0.8 and 0.9 or so.

Unfortunately my power's been out. So I'm late to the party but I'll post these anyway in case they're of some use. Identical situation for both. I flew the target aircraft. No countermeasures. Maneuver only. AIM-7M hit, while R-27R missed. Both missiles launched simultaneously from headon.

Worth noting also is, since the Aim-7 did hit, it did have even more room to maneuver, but R-27r missing is already over the limit. Making the difference even bigger.

Like I pointed out, the lift values for the R-27 are really on the low side. I'm reasonably certain I have them where they need to be in the missile mod.

Here the R-27t gets on the target quite fast, in first few seconds, as soon as it gets some air flow over the wings, much smaller turn radius then the 4.3km then I managed to get in the DCS.

Also it is a shot with quite the deflection.

The R always goes straight for a bit as a safety fuse, the T does not do this, maybe becuSe of the sliding rail rather than drop rail

The fact is that the AIM-7 made a new model according to the results of the simulation in the CFD software, and the R-27 is still the old one.

Over time, we will do it for R-27 too.

Thats great news Chizh. Does that include all models of the R27 family?

Great news Chizh!

Good job FoxAlpha! Thanks!

Thanks Chizh!

Poor red faction, Main weapon R-27 has disadvantage due to bad simulation, no plane to plane datalink, and a super low quality looking aicraft carrier.

I hope red can see the changes soon, after a long period of neglect.

Thank you for the info Chizh! I looking forward to the new R-27 in the future :)

The diagrams are very interesting as the R27 is the worst in about everything and....

It just doesn't feel wrong, it even looks totally wrong. It can't turn, it can't keep speed, it can't track. Only thing it seems to be able to do is accelerate and then just lose speed faster than anything else, faster than all other missiles combined.

Yeah every missile in game (except maybe the AIM-7) has too much drag and too little lift.

This is a graph I made comparing DCS vanilla, "That other sim", and number I plugged into DCS using CFD. Just the R27R though not the ER.

Yeah every missile in game (except maybe the AIM-7) has too much drag and too little lift.

 

 

This is a graph I made comparing DCS vanilla, "That other sim", and number I plugged into DCS using CFD. Just the R27R though not the ER.

 

:mad:

fix the RU missiles please chizh :helpsmilie: :helpsmilie::helpsmilie:

Chizh, great news on the up coming R27 family updates, any estimates on when we can expect to receive it in the openbeta?

Keep up the great work!

Do you plan on eventually getting around to all the missiles in DCS to do a proper CFD analysis? The mistral is pretty physics defying, its something worth looking into.

Ping for the update :)

#updateR27family ;)

When/IF the R-27 family gets a update, I wish that some people have done very good tests to compare the performance, do we get better or worse R-27 missiles. As it can very well be that we get worse than now, or no difference of any kind.

When/IF the R-27 family gets a update, I wish that some people have done very good tests to compare the performance, do we get better or worse R-27 missiles. As it can very well be that we get worse than now, or no difference of any kind.

Well, what we should expect isn't necessary a bigger range... but better performance against maneuvering target, something a keen to CFD modeled Aim-7 now...

https://forums.eagle.ru/showpost.php?p=3887106&postcount=263

"a keen" -> "akin"

from "Kin" - relatives/family

akin -> something resembling something else in the way family members or relatives resemble each other.

From my understanding ED did not do CFD for the current AIM-7