DSplayer Posted August 16, 2022 Share Posted August 16, 2022 (edited) Problem: Currently the SD-10 has a nozzle_exit_area value of 0.025 which translates to 7.024 inch (17.84 cm) diameter nozzle. When compared to its other contemporaries like the AIM-120C-5, the AIM-120C-5 has a nozzle_exit_value of 0.0132 which translates to a 5.104 inch (12.964 cm) diameter nozzle. The R-33 has a nozzle_exit_value of 0.025 as well. Examples: When comparing the nozzles of the AIM-120C-5 and the SD-10 with the model viewer, you can see that the SD-10 actually has a nozzle that is a little bit smaller than the AIM-120C-5's: Spoiler AIM-120C-5, SD-10, and R-33's nozzles: Spoiler Performance Data: I decided to conduct a test of the SD-10 with a nozzle_exit_area of 0.012668 (5 inch/12.7 cm diameter nozzle) and a performance drop can be seen if the SD-10 uses this smaller nozzle_exit_area. The same track was used for both tests. Google Sheets Link to Charts Spoiler Conclusion: The current SD-10's nozzle_exit_area values are too great and cause an abundance of performance at higher altitudes (a maximum difference of Mach ~0.248 at 12km altitude). Edited August 19, 2022 by DSplayer 2 -Tinkerer, Certified F-14 and AIM-54 Nut | Discord: @dsplayer Setup: i7-8700k, GTX 1080 Ti, 32GB 3066Mhz, Lots of Storage, Saitek/Logitech X56 HOTAS, TrackIR + TrackClipPro Modules: F-14, F/A-18, JF-17, F-16C, Mirage 2000C, FC3, F-5E, Mi-24P, AJS-37, AV-8B, A-10C II, AH-64D, MiG-21bis, F-86F, MiG-19P, P-51D, Mirage F1, L-39, C-101, SA342M, Ka-50 III, Supercarrier, F-15E Maps: Caucasus, Marianas, South Atlantic, Persian Gulf, Syria, Nevada 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 Link to comment Share on other sites More sharing options...
Napillo Posted August 18, 2022 Share Posted August 18, 2022 Tired of getting your F-14 shot down by SD-10? 3 Link to comment Share on other sites More sharing options...
DSplayer Posted August 18, 2022 Author Share Posted August 18, 2022 4 minutes ago, Napillo said: Tired of getting your F-14 shot down by SD-10? Nah disappointed that the SD-10 doesn't have a 10 inch diameter nozzle -Tinkerer, Certified F-14 and AIM-54 Nut | Discord: @dsplayer Setup: i7-8700k, GTX 1080 Ti, 32GB 3066Mhz, Lots of Storage, Saitek/Logitech X56 HOTAS, TrackIR + TrackClipPro Modules: F-14, F/A-18, JF-17, F-16C, Mirage 2000C, FC3, F-5E, Mi-24P, AJS-37, AV-8B, A-10C II, AH-64D, MiG-21bis, F-86F, MiG-19P, P-51D, Mirage F1, L-39, C-101, SA342M, Ka-50 III, Supercarrier, F-15E Maps: Caucasus, Marianas, South Atlantic, Persian Gulf, Syria, Nevada 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 Link to comment Share on other sites More sharing options...
AeriaGloria Posted August 18, 2022 Share Posted August 18, 2022 On 8/16/2022 at 12:38 AM, DSplayer said: Problem: Currently the SD-10 has a nozzle_exit_area value of 0.025 which translates to 7.024 inch (17.84 cm) diameter nozzle. When compared to its other contemporaries like the AIM-120C-5, the AIM-120C-5 has a nozzle_exit_value of 0.0132 which translates to a 5.104 inch (12.964 cm) diameter nozzle. The R-33 has a nozzle_exit_value of 0.025 as well. Examples: When comparing the nozzles of the AIM-120C-5 and the SD-10 with the model viewer, you can see that the SD-10 actually has a nozzle that is a little bit smaller than the AIM-120C-5's: Hide contents AIM-120C-5, SD-10, and R-33's nozzles: Hide contents Performance Data: I decided to conduct a test of the SD-10 with a nozzle_exit_area of 0.012668 (5 inch/12.7 cm diameter nozzle) and a performance drop can be seen if the SD-10 uses this smaller nozzle_exit_area. The same track was used for both tests. Google Sheets Link to Charts Hide contents Conclusion: The current SD-10's nozzle_exit_area values are too great and cause an abundance of performance at higher altitudes (a maximum difference of Mach ~0.248 at 12km altitude). Hey I looked up the LD-10, the ARM version of SD-10. It is same missile ballistically and should have same nozzle diameter. Recently there has been discussion in Deka forums that LD-10 under performs compared to SD-10 by 10-15%, and no one knows why. I just looked at nozzle diameter for LD-10, it says 0.01368. Oddly enough this is still slightly higher then AIM-120, but is probably a lot closer to what it should be. I wonder if some sort of other parameter would need to be adjusted for this large nozzle diameter. Anyways, I suggest you post this in Deka forums, where they will see it and change it. Since I’m pretty sure only ED looks at this forum Black Shark Den Squadron Member: We are open to new recruits, click here to check us out or apply to join! https://blacksharkden.com Link to comment Share on other sites More sharing options...
DSplayer Posted August 18, 2022 Author Share Posted August 18, 2022 Just now, AeriaGloria said: Hey I looked up the LD-10, the ARM version of SD-10. It is same missile ballistically and should have same nozzle diameter. Recently there has been discussion in Deka forums that LD-10 under performs compared to SD-10 by 10-15%, and no one knows why. I just looked at nozzle diameter for LD-10, it says 0.01368. Oddly enough this is still slightly higher then AIM-120, but is probably a lot closer to what it should be. I wonder if some sort of other parameter would need to be adjusted for this large nozzle diameter. Anyways, I suggest you post this in Deka forums, where they will see it and change it. Since I’m pretty sure only ED looks at this forum Yeah I detailed it in post on the Deka forums: They're checking it so it so there should be a fix soon. -Tinkerer, Certified F-14 and AIM-54 Nut | Discord: @dsplayer Setup: i7-8700k, GTX 1080 Ti, 32GB 3066Mhz, Lots of Storage, Saitek/Logitech X56 HOTAS, TrackIR + TrackClipPro Modules: F-14, F/A-18, JF-17, F-16C, Mirage 2000C, FC3, F-5E, Mi-24P, AJS-37, AV-8B, A-10C II, AH-64D, MiG-21bis, F-86F, MiG-19P, P-51D, Mirage F1, L-39, C-101, SA342M, Ka-50 III, Supercarrier, F-15E Maps: Caucasus, Marianas, South Atlantic, Persian Gulf, Syria, Nevada 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 Link to comment Share on other sites More sharing options...
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