K9 Vidar - Missing NM28 Grenades

Machinery of War Discussion Ground Vehicle
1

K9 VIDAR
MISSING NM28 GRENADES

INTRODUCTION

There should be several variants of the NM28 grenades, as the NM28 is compatible with all fuzes according to STANAG 2916. The NM28 is Norway’s version of the M107 and OEF-3, and should be similar to these, but with small changes, the two grenades this article & bug the report is about the “cost-effective” variants of these, which then means that they have slightly less explosives (NM28 has 6700 grams of TNT in contrast to the others). These have been used for a long time on Norway’s old M109A3GNM wagons, but are also now that we have replaced them with the new K9 Thunder wagons, they are being used at the time of writing. I made this article here to share what I found, maybe bring some attention to the problem and show some history

The NM in NM28 means “Norwegian Model”

BUG REPORT

https://community.gaijin.net/issues/p/warthunder/i/oEf8ZR9h67gW

AMMUNTION TECHNICAL DATA

Norwegian Model NM28 (Proximity fuze)
-PROJECTILE WEIGHT WITH FUZE: 42.5 kg
-MUZZLE VELOCITY: 380 m/s to 800 m/s
-MAX. RANGE WITH HOLLOW BASE: 24 km
-PROBABLE ERROR (OF RANGE): ≤ 0.5% (range) / ≤ 0.1% (deflection)
-EXPLOSIVE MASS: 6,700 Grams of TNT
-EQUIVALENT: Approx. 9 kg
-SERVICE TEMPERATURE: -40°C to +52°C
-TRIGGER RADIUS: 10-14 Meter above ground

Norwegian Model NM28 (cost effective)
-PROJECTILE WEIGHT WITH FUZE: 42.5 kg
-MUZZLE VELOCITY: 380 m/s to 800 m/s
-MAX. RANGE WITH HOLLOW BASE: 24 km
-PROBABLE ERROR (OF RANGE): ≤ 0.5% (range) / ≤ 0.1% (deflection)
-EXPLOSIVE MASS: 6,700 Grams of TNT
-EQUIVALENT: Approx. 9 kg
-SERVICE TEMPERATURE: -40°C to +52°C

SUMMARY

-The M107 (PF) should be replaced by the NM28 Variant with Proximity fuze with 6700 grams of TNT
-M107 should be replaced by the NM28 variant with 6700 grams of TNT

SOURCES

Spoiler

NAMMO HANDBOOK
Website for the pdf: Nammo releases the 7th edition of their Ammunition Handbook - Nammo | Nammo
Pdf: https://www.nammo.com/wp-content/uploads/2023/09/Nammo-Handbook-2023.pdf
Published by NAMMO: 07.06.2023

  1. NM28 (Proximity fuze): At Page 120
  2. NM28 “cost effective”: At Page 120

https://www.forsvaret.no/en/organisation/army/UD%202-1_The%20Norwegian%20Armed%20Forces%20Safety%20Rules%20and%20Regulation%20for%20land%20based%20military%20activities.pdf/_/attachment/inline/e361166a-9e0e-4097-a83a-087a8dc341fc:abe7c056b79e8b36fc115892ef975eafb13bf067/UD%202-1_The%20Norwegian%20Armed%20Forces%20Saftey%20Rules%20and%20Regulation%20for%20land%20based%20military%20activities.pdf
NM28 Variants & K9 at page: 411
PDF-file/document 2022/2022

https://ffi-publikasjoner.archive.knowledgearc.net/bitstream/handle/20.500.12242/2052/07-01545.pdf
Explosives information Page: 10 See highlighted text attached picture 4
Trigger radius information Page: 32 See highlighted text attached picture 5

SECONDARY SOURCE
De siste skytsene skipes nå: Koreanerne mener Norge trenger enda mer artilleri | Tu.no
This source should verify the use of the NM28 as well. The “Teknisk Ukeblad” are Norway’s largest editorial publications within technology
Published: 17. aug. 2020

POLL

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Here we can see an NM28 Grenade being loaded onto the K9 Vidar