BlackPixxel Posted October 20, 2023 Posted October 20, 2023 With the 2.9 update there were changes to Aim-9 and R-13 missiles. R-13M1 and Aim-9P-5 are very similar missiles in terms of kinematics. They have a similar shape, and the impulse per weight is also quite close. R-13M1: 66.15 kg*s/kg Aim-9P-5: 69.60 kg*s/kg Yet that Aim-9 reaches significantly more speed, while the R-13 also slows down much quicker. Following graph shows R-13M1 (incorrectly labeled as R-3) and Aim-9P-5 when launched under same conditions: I suspect that something is not right regarding the drag. 2 1
DSplayer Posted October 21, 2023 Posted October 21, 2023 I will say that the drag and motor performance of the R-13M1 is different compared to the AIM-9Ps. I suspect they did make the R-3s managed by ED but the R-3s/R-13s still retain their old qualities. I have previously reported on the Mag 3 bug reporter that their missiles perform significantly differently compared to their ED counterparts. I hope an overhaul comes soon and hopefully that will come with new 3D models. Discord: @dsplayer Setup: R7 7800X3D, 64GB 6000Mhz, Saitek/Logitech X56 HOTAS, TrackIR + TrackClipPro Resources I've Made: F-4E RWR PRF Sound Player | DCS DTC Web Editor Mods I've Made: F-14 Factory Clean Cockpit Mod | Modern F-14 Weapons Mod | Iranian F-14 Weapons Pack | F-14B Nozzle Percentage Mod + Label Fix | AIM-23 Hawk Mod for F-14
ED Team Маэстро Posted October 25, 2023 ED Team Posted October 25, 2023 On 10/20/2023 at 10:39 PM, BlackPixxel said: With the 2.9 update there were changes to Aim-9 and R-13 missiles. R-13M1 and Aim-9P-5 are very similar missiles in terms of kinematics. They have a similar shape, and the impulse per weight is also quite close. R-13M1: 66.15 kg*s/kg Aim-9P-5: 69.60 kg*s/kg Yet that Aim-9 reaches significantly more speed, while the R-13 also slows down much quicker. Following graph shows R-13M1 (incorrectly labeled as R-3) and Aim-9P-5 when launched under same conditions: I suspect that something is not right regarding the drag. We will investigate. Looks like R-13 drag issue. 1 1 YouTube Channel
BlackPixxel Posted October 25, 2023 Author Posted October 25, 2023 1 hour ago, Маэстро said: We will investigate. Looks like R-13 drag issue. Thank you!
MysteriousHonza Posted October 25, 2023 Posted October 25, 2023 On 10/21/2023 at 10:55 AM, DSplayer said: I will say that the drag and motor performance of the R-13M1 is different compared to the AIM-9Ps. I suspect they did make the R-3s managed by ED but the R-3s/R-13s still retain their old qualities. I have previously reported on the Mag 3 bug reporter that their missiles perform significantly differently compared to their ED counterparts. I hope an overhaul comes soon and hopefully that will come with new 3D models. All mig21 aa missiles besides r55 were changed in 2.9. R13Ms too, their engine, seeker parameters and i think drag coefs too.
BlackPixxel Posted December 20, 2023 Author Posted December 20, 2023 Issue is now resolved, the drag of R-13M got corrected. 2
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