EagleFox Posted January 29, 2020 Share Posted January 29, 2020 Has anyone been experiencing tacan needle on HSI showing wrong location of beacon. Here is a picture sorry for crap quality but for some reason DCS saves screenshot as PNG. Link to comment Share on other sites More sharing options...
IronMike Posted January 29, 2020 Share Posted January 29, 2020 (edited) Yes, this is normal, it is the magnetic deviation from the ship's large metal structure, which we modeled. If you fly away from the carrier again, you will see that the deviation will decrease again. On and around the ship the deviation for the AHRS can be up to 30°. Edited February 4, 2020 by IronMike Heatblur Simulations Please feel free to contact me anytime, either via PM here, on the forums, or via email through the contact form on our homepage. http://www.heatblur.com/ https://www.facebook.com/heatblur/ Link to comment Share on other sites More sharing options...
EagleFox Posted January 29, 2020 Author Share Posted January 29, 2020 Wasn't aware of that, thanks for the quick reply cheers. :D Link to comment Share on other sites More sharing options...
sBryansGames Posted January 31, 2020 Share Posted January 31, 2020 I notice this when forming up with the Viking and that thing is tinny compared to the Stennis. Does this deviation occur in TACAN yardstick with a buddy? *Social Media* twitch/sBryansGames [sIGPIC][/sIGPIC] Link to comment Share on other sites More sharing options...
IronMike Posted February 2, 2020 Share Posted February 2, 2020 I notice this when forming up with the Viking and that thing is tinny compared to the Stennis. Does this deviation occur in TACAN yardstick with a buddy? What you will notice there is more the general magnetic variation (6 in most places you fly) than the magnetic deviation caused by a metallic structure. While the Stennis is a significant mass, the viking or your wingman would be rather unsignificant masses, maybe they add a tad, but in general it is the MAGVAR that is deviating the full 6° or how many it is depending on the map, noticeable only when fully deflected close to the target and rather not noticeable further out. Heatblur Simulations Please feel free to contact me anytime, either via PM here, on the forums, or via email through the contact form on our homepage. http://www.heatblur.com/ https://www.facebook.com/heatblur/ Link to comment Share on other sites More sharing options...
Spiceman Posted February 3, 2020 Share Posted February 3, 2020 (edited) I notice this when forming up with the Viking and that thing is tinny compared to the Stennis. Does this deviation occur in TACAN yardstick with a buddy? A/A TACAN would be immune. It is only a DME exchange. One aircraft sends out a poll and the other aircraft responds. The time measurement determines the DME. A magnetic field would not have an effect. In fact, the effect you’re seeing is not on the TACAN at all, it is on the AHRS which is positioning the compass card on the BDHI. It’s the AHRS that’s off, not the TACAN. Edited February 3, 2020 by Spiceman Former USN Avionics Tech VF-41 86-90, 93-95 VF-101 90-93 Heatblur Tomcat SME I9-9900K | Gigabyte Z390 Aorus Ultra | 32GB DDR4 3200 | Samsung 970 EVO Plus NVMe | RTX 2070 Super | TM Throttle | VPC Warbird Base TM F-18 Stick Link to comment Share on other sites More sharing options...
sBryansGames Posted February 3, 2020 Share Posted February 3, 2020 A/A TACAN would be immune. It is only a DME exchange. One aircraft sends out a poll and the other aircraft responds. The time measurement determines the DME. A magnetic field would not have an effect. In fact, the effect you’re seeing is not on the TACAN at all, it is on the AHRS which is positioning the compass card on the BDHI. It’s the AHRS that’s off, not the TACAN. Ah... Yeah your right. Yardstick shows only distance. Forgot about that. XD *Social Media* twitch/sBryansGames [sIGPIC][/sIGPIC] Link to comment Share on other sites More sharing options...
IronMike Posted February 4, 2020 Share Posted February 4, 2020 A/A TACAN would be immune. It is only a DME exchange. One aircraft sends out a poll and the other aircraft responds. The time measurement determines the DME. A magnetic field would not have an effect. In fact, the effect you’re seeing is not on the TACAN at all, it is on the AHRS which is positioning the compass card on the BDHI. It’s the AHRS that’s off, not the TACAN. Thanks, Spice, forgot to mention that and might have been unclear, misleading. Heatblur Simulations Please feel free to contact me anytime, either via PM here, on the forums, or via email through the contact form on our homepage. http://www.heatblur.com/ https://www.facebook.com/heatblur/ Link to comment Share on other sites More sharing options...
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