Hello Everyone

---

I'm back and this time I uploaded a Self Propelled Howitzer from Norway, yes it's the K-9 VIDAR

This time I made it special with a STABILIZER GUN

---

                K-9 DEVELOPMENT

---

🇰🇷🤝🇧🇻

---

The K9 Thunder is a South Korean 155 mm self-propelled howitzer designed and developed by the Agency for Defense Development and private corporations including Dongmyeong Heavy Industries, Kia Heavy Industry, Poongsan Corporation, and Samsung Aerospace Industries for the Republic of Korea Armed Forces, and is now manufactured by Hanwha Aerospace. K9 howitzers operate in groups with the K10 automatic ammunition resupply vehicle variant.

In the 1980s, the ROK Armed Forces came in need of a new artillery system to contest North Korean equipment. The armed forces operated M107 self-propelled guns and K55 self-propelled howitzers. However, they had shorter firing ranges compared to M-1978 Koksan and were outnumbered by various North Korean artillery. With the success in designing and manufacturing the KH178 105 mm and KH179 155 mm Towed Howitzers, and experience gained by license producing the K55 (KM109A2), the Ministry of Defense ordered the development of a new system that would have a longer firing range, faster firing rate, and high mobility. The development started in 1989 and was led by the Agency for Defense Development (ADD) and Samsung Aerospace Industries (now Hanwha Defense)

Since 1983, the ADD researchers have been collecting and analyzing data for future artillery. They saw that burst fire and quick relocation would become the dominant factor in artillery battles and built an automatic loading system for testing in 1984. In 1987, the ADD offered an upgrade plan to the existing K55 inspired by the United States' M109 Howitzer Improvement Program (HIP), but was rejected by the Republic of Korea Army in 1988. As a result, and at the beginning of K9 development, the ADD was determined to create a new weapon system and worked on a conceptual model until 1991. Early concepts requested by the military included river crossing capability and the installation of M61 Vulcan as an anti-air weapon, which were later removed due to being unnecessary for such a long-range weapon

In 1989, the only design data the researchers could obtain at that time were the provisions of the four-nation ballistic agreements, namely the United States, the United Kingdom, Germany, and Italy, to secure the homogeneity of the ammunitions—the new 52 caliber gun fires a NATO standard ammunition (L15A1) at a speed of 945 m per second from chamber volume of 3,556 cm3. The first domestic design was prepared by extending and modifying the 155 mm 39 caliber gun used for the KH179.[9] The first firing test was held in January 1992 but experienced many problems due to design errors.

In September 1990, a Korean developer visited the United Kingdom in search of turret design technology which was known to have been developed by British Vickers for AS-90. Vickers refused the technology transfer. Instead, the company offered the AS-90 for sale. The developer also visited Marconi, but the negotiations ended with an unsatisfactory result due to a high requested price. Therefore, developers pursued a domestic electrohydraulic driving system, using the experience in turret design and turret driving devices of the K1 MBT. The simulator was built in 1991

The next year, researchers found that the disproportionate moment of the 52-caliber was twice of the K55. The balancing machine, which increased the capacity of the existing hydraulic balancing machine, did not sufficiently compensate for the imbalance moment value due to the change in the position of the armament. The driving force was very different depending on the driving angle. The same problem appeared in Germany's Panzerhaubitze 2000, which was under development. A joint research team from the ADD and Seoul National University of Science and Technology calculated an accurate theoretical model, and concluded that adjustment to system configuration was possible without major design changes

Meanwhile, loud noise from hydraulic generators, which can cause hearing loss under long exposure, was also a problem. The engineers of the ADD and Dongmyeong Heavy Industries (now Mottrol) found that the noise was due to excessive shaking of hydraulic pressure, thus creating an experimental device using the principle of Helmholtz attenuators used in car mufflers. The noisy equipment became quieter and the hydraulic pulsation was significantly reduced. Overall, the domestic design showed driving precision of less than 1 mil in the standard error range.

In the winter of 1991, the ADD held talks with engineers from Samsung Aerospace Industries' special research institute. The ADD originally demanded that Samsung be in charge of system assembly only, as the company had no experience in developing its own tracked vehicle design despite having the experience in manufacturing K55 under license. The decision was overturned and the manufacture of the MTR (Mobility Test Rig) was decided upon.Samsung worked with KAIST on suspension and Seoul National University & Pohang University of Science and Technology on mobility systems. The engine was co-developed with American AAI Corporation

---

                  VARIAN

XK9: Experimental prototype. 2 built.

K9 Thunder: First-production variant.

T-155 Firtina (Storm): Turkish variant of the K9. Manufactured by Turkish Land Forces with subsystems from South Korea. The turret is modified to store 30 ammunition instead of 24 while decreasing hull stored ammunition from 24 to 18.[275] The vehicle has APU installed, but lacks panoramic scope for manual firing mode.
T-155 Firtina 2: Turkish upgrade of T-155 Firtina.
AS9 "Aussie Thunder": Offered Australian variant of the K9 in 2010. It featured enhanced FCS, BMS-F, RWS, and anti-tank mine protection capability. The suspension is also upgraded to support increased weight.
AHS Krab: Polish self-propelled howitzer, uses the K9 chassis and power pack. Chassis is license produced by Huta Stalowa Wola.

---

---

K9 PIP(performance improvement plan): K9 upgrade plan noticeably adding APU, upgraded FCS. The upgrade later evolved into K9A1 with additional modifications.

K9 Vajra-T (Lightning): Indian variant of the K9. Manufactured by Larsen & Toubro under license with 50% Indian components. It is customized for desert and alpine operations, and is the first variant to equip Safran MINEO DFSS, a dedicated gunner's sight for direct firing capability similar to main battle tanks.[276][277]
K9FIN Moukari (Sledge-hammer): Finnish variant of the K9. Transferred from the Republic of Korea Armed Forces inventory with refurbishment and upgrades.

K9EST Kõu (Thunder): Estonian variant of the K9. Transferred from the Republic of Korea Armed Forces inventory with refurbishment and upgrades. Additional modifications were performed by Go Craft._

K9A1: First enhanced variant for the Republic of Korea Armed Forces, and is in service since 2018. All K9s operated by South Korea will be upgraded to A1 or future variant by 2030.

K9 VIDAR (Versatile InDirect ARtillery system): Norwegian variant of the K9A1. Equips Norwegian subsystems and has spall liner for enhanced protection. Uses Safran MINEO DFSS for direct firing.

AS9 Huntsman: Australian variant of the K9A1. It is an upgraded VIDAR configuration with additional armor package and enhanced suspension. New hull design is similar to AS21 Redback in appearance

K9A1EGY: Egyptian variant of K9A1. Will be produced under license in Egypt.

K9PL(A1): Polish variant of K9A1. Equipped Polish subsystems such as TOPAZ FCS and C2 network system.
K9A2: Second enhanced variant for the Republic of Korea Armed Forces. 1 prototype built and shown to the public in 2022, and is in development. Also known as K9A2 Block-I to differentiate from 58 caliber variant.
K9PL(A2): Licensed variant of the K9A2 for the Polish Land Forces

K9A2 Block-II: 155 mm 58 caliber variant of K9A2. Proposal stage only.

K9A3: Fully automated and unmanned K9A2. Under development.

K10 ARV: Automatic resupplying vehicle for K9 Thunder using the same chassis.

K10 VIDAR (Versatile InDirect ARtillery system): Norwegian variant of the K10.
K10 AARV (Armored Ammunition Resupply Vehicle): Enhanced protection variant of K10 ARV

---

            K-9 Armanent Howitzer

The main weapon is the 155mm / 52 calibre gun. It has a burst rate of fire of three rounds per 15 seconds and a maximum rate of fire of six to eight rounds a minute for three minutes.

Sustained rate of fire is two to three rounds a minute for one hour. The K9 Thunder is designed to meet the up-to-date tactical concept on shoot and scoot.

The gun can fire a standard M107 high-explosive (HE) projectile for a maximum range
of 18km.

---

---

Maximum range firing the HE rocket assisted projectile (RAP) with uni-charge of five zones, is 30km. It can also fire a K307 projectile with a modular-charge of six zones for a maximum range of over 40km.

Fire control The gun’s firing is controlled by onboard fire-control equipment. The information can be transmitted through a data digital radio link or voice communications. The automatic loading system places the projectiles onto the ammunition tray ready for fire. The K9 Thunder can open fire within 30 seconds at stand out position or within 60 seconds during movement.

The K9A1 upgrade has the automatic fire control system that includes text-based DOS system, graphical windows system, electronic time data loader, and digital map.

---

                 INSTRUCTIONS

• First turn on AG-1 to start the engine,

• next turn on AG-2 for the headlights

• and fturn on AG-3 to activate the turret

---

                  SCREENSHOT

---

---

                   CREDITS 

• Big Thanks for @KmsErikaMaid helping me create Link screenshot

• @MAHADI me using his wing gun

---

                  Bonus Image

yep it's a bomb

---

• NOTE

sorry the parts exceed 800 parts :<

This was uploaded on September 26, 2023 at 17.28 WIB

ENJOY :>

                      END