The IRIS-T SLM TRML-4D rotation rate is operating rather slowly.
I'm sure there are IRL operating modes that allow for a slow rotation rate, but it would make sense for it to be modelled at it's highest known capability which allows for a track update rate of <1s, which obviously can't be achieved with the rotation being this slow even with the look-back/forward scanning.
Hensoldt themselves no longer publicly state the rate, but an archived page does: https://web.archive.org/web/20241111032523/https://www.hensoldt.net/products/radar-iff-and-datalink/trml-4d/
It can also rotate at least noticeably faster in Hensoldt animated marketing videos:
How fast exactly it rotates I'm not sure, but it should at least be fast enough to support the <1s track update time.
Also supported by several secondary sources:
https://armyrecognition.com/news/army-news/army-news-2024/germany-provides-6-additional-trml-4d-radars-to-ukraine
https://www.aviacionline.com/hendsoldt-to-deliver-six-trml-4d-air-defense-radars-to-ukraine
https://vpk.name/en/718027_capable-of-detecting-and-classifying-aerial-targets-the-apu-announced-the-delivery-of-a-new-batch-of-trml-4d-radars.html
Thanks for reading!
