falcon_120 Posted November 25, 2019 Share Posted November 25, 2019 Thanks ED! Missile contrails look awesome in the latest F16 mini update video. Is it coming for all missiles? Or what is the plan? Enviado desde mi SM-G950F mediante Tapatalk Link to comment Share on other sites More sharing options...
twistking Posted November 25, 2019 Share Posted November 25, 2019 Thanks ED! Missile contrails look awesome in the latest F16 mini update video. Is it coming for all missiles? Or what is the plan? Enviado desde mi SM-G950F mediante Tapatalk good find! let's hope it's indeed contrails and not a bug with smokeless motors now smoking;) by the way, does anyone know, if a missiles only contrails as long as the motor is burning? i find it plausible that it would contrail even after burn-out, because of the high supersonic speed, but i do not know. My personal wishlist after half a decade with DCS: https://forum.dcs.world/topic/184968-my-personal-wishlist-after-half-a-decade-with-dcs Link to comment Share on other sites More sharing options...
falcon_120 Posted November 26, 2019 Author Share Posted November 26, 2019 good find! let's hope it's indeed contrails and not a bug with smokeless motors now smoking;) by the way, does anyone know, if a missiles only contrails as long as the motor is burning? i find it plausible that it would contrail even after burn-out, because of the high supersonic speed, but i do not know.I dont know, i thought they would contrail only during engine burn time due to water vapor coming from the engine? But maybe also due to differences in temperature or pressure? In that case maybe they show a bit longer that engine burnout time. Any expert please chime in :) Enviado desde mi SM-G950F mediante Tapatalk Link to comment Share on other sites More sharing options...
M1Combat Posted November 26, 2019 Share Posted November 26, 2019 I would think the contrail would stay... Nvidia RTX3080 (HP Reverb), AMD 3800x Asus Prime X570P, 64GB G-Skill RipJaw 3600 Saitek X-65F and Fanatec Club-Sport Pedals (Using VJoy and Gremlin to remap Throttle and Clutch into a Rudder axis) Link to comment Share on other sites More sharing options...
twistking Posted November 26, 2019 Share Posted November 26, 2019 i've done some reading and from what i understand now, the contrails should indeed be the result of the burning engine only. With the reaction product responsible for the contrail being water (H2O), hydrochloric acid (HCl) or aluminium oxide (Al2O3), depending of the type of rocket motor. my educated guess would be, that there might be occasions where the high ultrasonic speed of an object alone could generate vapor trails and similar effects, but these would probably vanish quickly - similar to wingtip-vortices or over-wing vapor... My personal wishlist after half a decade with DCS: https://forum.dcs.world/topic/184968-my-personal-wishlist-after-half-a-decade-with-dcs Link to comment Share on other sites More sharing options...
Raisuli Posted November 27, 2019 Share Posted November 27, 2019 I would think the contrail would stay... A contrail is warm vapor condensing in cold air. Without the vapor-generating combustion there's nothing to condense, and no contrail. The vapor trails from LEXs or wings is caused by low pressure areas in (relatively) humid conditions. The famous vapor cones when crossing the mach are Wilson clouds forming in the Taylor wave. The upshot is the contrail should not outlast combustion by very much. There will still be some vapor in the engine casing, even after burn-out, so probably a little lingering effect. Which makes me wonder if the contrail will stop if you shut off engines above the contrail generating boundary, or if it's a boolian switch. Link to comment Share on other sites More sharing options...
twistking Posted December 3, 2019 Share Posted December 3, 2019 can anyone confirm that we actually saw missile contrails in the video and not just a bug with smokeless motors now smoking? My personal wishlist after half a decade with DCS: https://forum.dcs.world/topic/184968-my-personal-wishlist-after-half-a-decade-with-dcs Link to comment Share on other sites More sharing options...
gunterlund21 Posted December 3, 2019 Share Posted December 3, 2019 ill bet those video contrails are a result of launching missiles at 29000 feet. I was in Art of the Kill D#@ it!!!! Link to comment Share on other sites More sharing options...
falcon_120 Posted December 4, 2019 Author Share Posted December 4, 2019 Unfortunately havent seen them in the latest patch. I hope they add them to the sim soon. Enviado desde mi SM-G950F mediante Tapatalk Link to comment Share on other sites More sharing options...
Ziptie Posted December 7, 2019 Share Posted December 7, 2019 I’m not sure what to think of this... Missiles have emitted a “contrail” for as long as I can remember in DCS. Whether it was smoke from the propulsion motor, or high altitude - they’ve been there... right? Cheers, Don (callsign Ziptie) i7 6700 @4ghz, 32GB HyperX Fury ddr4-2133 ram, GTX980, Oculus Rift CV1, 2x1TB SSD drives (one solely for DCS OpenBeta standalone) Thrustmaster Warthog HOTAS, Thrustmaster Cougar MFDs Airframes: A10C, A10CII, F/A-18C, F-14B, F-16C, UH=1H, FC3. Modules: Combined Arms, Supercarrier. Terrains: Persian Gulf, Nevada NTTR, Syria Link to comment Share on other sites More sharing options...
twistking Posted December 7, 2019 Share Posted December 7, 2019 (edited) I’m not sure what to think of this... Missiles have emitted a “contrail” for as long as I can remember in DCS. Whether it was smoke from the propulsion motor, or high altitude - they’ve been there... right? Cheers, Don (callsign Ziptie) i was under the impression, that - in dcs - smokeless rocket motors never contrailed, whatever the altitude. Edited December 7, 2019 by twistking My personal wishlist after half a decade with DCS: https://forum.dcs.world/topic/184968-my-personal-wishlist-after-half-a-decade-with-dcs Link to comment Share on other sites More sharing options...
wilky510 Posted December 7, 2019 Share Posted December 7, 2019 i was under the impression, that smokeless rocket motors never contrailed, whatever the altitude. AMRAAM's do contrail at high altitude: but it shouldn't be as thick as the Russian 'residue' motor smoke. IMHO, it should be added. But the AMRAAM should also receive it's updated flight model ;). Link to comment Share on other sites More sharing options...
twistking Posted December 7, 2019 Share Posted December 7, 2019 AMRAAM's do contrail at high altitude: but it shouldn't be as thick as the Russian 'residue' motor smoke. IMHO, it should be added. But the AMRAAM should also receive it's updated flight model ;). i was referring to dcs only. i edited my post. My personal wishlist after half a decade with DCS: https://forum.dcs.world/topic/184968-my-personal-wishlist-after-half-a-decade-with-dcs Link to comment Share on other sites More sharing options...
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