CN-105-F1 (105 mm)

Description

The 105 mm Modèle F1 (or CN-105-F1) is a 105 mm rifled tank gun used by the AMX-30 and its variants. The gun is made from steel with a magnesium thermal sleeve to protect against damage such as bending. One of the unique features of the gun was the ability to shoot the Obus à Charge Creuse de 105 mm Modèle F1 or OCC for short.

Vehicles equipped with this weapon

• AMX-30
• AMX-30 (1972)
• AMX-30B2
• AMX-30B2 BRENUS
• AMX-30 Super

General info

The Modèle F1 is fitted with a semi-automatic vertical sliding wedge breechblock but it is lacking a muzzle brake. As opposed to the British L7A1, the F1 cannon uses a compressed air scavenging system instead of a bore evacuator. The recoil mechanism uses two symmetrically opposed hydraulic brake cylinders with a single hydropneumatic recuperator cylinder.

Available ammunition

• OCC 105 F1

The OCC projectile is the default HEAT round the user starts out with. It consists of two parts, the outer shell with a suspended inner shell connected by ball bearings. This allowed the HEAT round to be spin stabilized unlike other modern HEAT rounds which are fin stabilized. It weighs 10.95 kg and the warhead contains 780 g of RDX. Its speed is 1000 m/s with the penetration force of up to 400 mm.

• OE 105 F1 Mle.60

The OE 105 projectile is a default HE round the user stats out with. It consists of a steel body with an explosive filling of the TNT type. There is a sensitive impact fuse at the end of the projectile which detonates upon contact with any surface. The projectile weighs 12.1 kg and the explosive mass is 2 kg worth of TNT. Its speed is 700 m/s with the penetration force of 25 mm.

• OFPH 105 F1

The OFPH 105 projectile is a smoke round that upon impact, creates a smoke screen for 5 seconds. The smoke screen itself lasts 25 seconds and is 20 m big. It weighs 11.4 kg and moves at the speed of 700 m/s.

• OFL 105 F1

The OFL 105 projectile is an APFSDS round that relies on kinetic energy and spalling to damage enemy vehicles. It weighs 3.45 kg but drops to 1.6 kg in-flight due to the SABOT discarding. It moves at the speed of 1525 m/s with the penetration force of up to 361 mm.

Comparison with analogues

Comparable cannons to CN-105-F1
	Name	Year of Creation	Mass	Rounds Per Minute	Rounds	Caliber
▄	Royal Ordnance L7A1	1956	1,282 kg	10 RPM	Shot L28A1 Shell L35	105 mm
▄	Royal Ordnance L7A3	1957	1,287 kg	6 RPM	DM12 DM13 - DM33	105 mm
▄	OTO Melara 105/52	1977	________	7 RPM	M456 - M393A2 M735 - DM33	105 mm
▃	M68	1958	1,128 kg	850 RPM	M728 M456 - M393A2	105 mm

Usage in battles

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Pros and cons

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Cons:

History

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Media

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See also

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External links

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