Modele F2 (105 mm)

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Description

The 105/47 F2 MECA 105 mm (otherwise known as the Modèle F2) is a medium-pressure cannon mounted in a GIAT Industries TK 105 three-man turret that fires 105 x 527R proprietary ammunition. The turret uses a SAMM CH49 electrohydraulic gun control system, albeit it lacks a stabilization system. An NF-1 7.62 mm machine gun is fitted coaxially to the main cannon and two electrically-operated smoke launchers are fitted onto each side of the turret. A total of 38 rounds are carried for the main cannon.

The 105 mm F2 rifled tank gun has a very light barrel with shallow rifling. The semi-automatic breech has a vertical sliding wedge block and electrical firing system. There is a fixed muzzle reference mirror just behind and above the double-baffle muzzle break, which helps with detecting barrel warping. A single hydropneumatic cylinder is mounted on the left side of the gun that acts as the recoil brake, while the recuperator cylinder is mounted on the right-hand side.

Vehicles equipped with this weapon

General info

The Modèle F2 is a very similar to the other 105 mm cannons found in the AMX-30s. It weighs around 720 kg and its firing range was little over 1,250 m.

Because it is a medium pressure cannon, it has great muzzle velocity. It has access to HE, HEAT-FS but also APFSDS which unlike the APFSDS found in the AMX-30s, creates average amounts of spalling, making one shot kills while using it way more consistent and reliable.

The HEAT-FS round creates consistent damage after penetration, but just like other HEAT-FS ammunition, it isn't uncommon for a simple bush to stop the whole round. One should think about grabbing at least a few HEAT-FS rounds, as only chemical shells can cause hull-break to light vehicles and APFSDS rounds can just pass straight trough them, creating little to no damage as their armour is very thin most of the time.

Available shells

Penetration statistics
Ammunition Warhead type Penetration @ 0° Angle of Attack (mm)
10 m 100 m 500 m 1,000 m 1,500 m 2,000 m
OCC 105 F3 HEATFS 350 350 350 350 350 350
OE 105 F3 HE 25 25 25 25 25 25
OFL 105 F3 APFSDS 325 321 318 316 308 303
Shell details
Ammunition Warhead type Velocity

(m/s)

Projectile Mass (kg) Fuse delay (m) Fuse sensitivity (mm) Explosive Mass

(TNT equivalent) (g)

Ricochet chance
0% 50% 100%
OCC 105 F3 HEATFS 1,120 5.65 0.05 1 1,020 65° 72° 77°
OE 105 F3 HE 800 7.1 0.1 0.1 2,000 79° 80° 81°
OFL 105 F3 APFSDS 1,400 3.8 N/A N/A N/A 78° 80° 81°
Smoke shell characteristics
Ammunition Velocity

(m/s)

Projectile Mass (kg) Screen radius

(m)

Screen deploy time

(s)

Screen hold time

(s)

Explosive Mass

(TNT equivalent)

(g)

O-FUM-PH-105 F3 800 7.1 20 5 25 50

Comparison with analogues

Comparable cannons to the Modèle F2
Name Year of Creation Mass

(kg)

Rounds Per Minute Calibre
CN-105-F1 1966 2,470 9 RPM 105 mm
OTO Melara 105/52 1977 _____ 7 RPM 105 mm
L7A3 1957 1,287 6 RPM 105 mm
M68 1958 1,128 6 RPM 105 mm

Usage in battles

The Modèle F2 excels at fighting over long distance due to its rounds having pretty high velocity. Because it is only mounted on the AMX-10RC, which is a light vehicle, one should not charge forwards and take on brawls. The effective way to use this cannon is to hang around in the back, preferably in a vantage point, and pick off unsuspecting enemies. The cannon has -8° of gun depression, but due to the AMX-10RC's controlled suspension, one can take advantage of hills and uneven terrain, effectively making the gun depression lower/higher.

Pros and cons

Pros:

  • High velocity of rounds
  • Has access to APFSDS, which only a few vehicles have in that battle rating
  • APFSDS reliably destroys tanks in one shot

Cons:

  • Somewhat slow fire rate; roughly 6 rounds a minute
  • Lack of a stabilizer system

History

The Modèle F2 (F2 MECA) was designed as a light gun that could fire fin-stabilized projectiles and it was made exclusively for the AMX-10RC. The 105 mm F2 guns installed in the AMX-10RC (6 x 6) vehicles of the French Army were to have been replaced by the rifled 105 mm 105 G2 gun.

It was only fitted to the AMX-10RC which is still in service with France, Morocco and Qatar. Since the AMX-10RC is not marketed by GIAT anymore, it is very unlikely that there will be any future productions of this gun.

Media

Modèle F2 mounted on an AMX-10RC

See also

External links


France tank cannons
20 mm  20F2
25 mm  SA34 L/72
37 mm  SA18 L/21 · SA38 L/33
47 mm  SA34 L/30 · SA35 L/32 · SA37
75 mm  APX · SA35 L/17 · SA44 · SA49 · SA50 L/57
90 mm  CN90 F3 · CN90 F4 · DEFA F1 · SA45
100 mm  SA47 L/58
105 mm  CN-105-F1 · Modele F2 · PzK M57
120 mm  GIAT CN120-25 G1 · GIAT CN120-26 F1 · SA46
142 mm  ACRA
155 mm  L'Obusier de 155 Modèle 1950
  Foreign:
15 mm  MG 151 (Germany)
20 mm  MG 151 (Germany)
37 mm  M6 (USA)
40 mm  QF 2-pounder (Britain)
75 mm  KwK42 (Germany) · M3 (USA) · M6 (USA)
76 mm  M7 (USA)
105 mm  M4 (USA)