Projectile HE M1A1 ERFB BT
Contents
Projectile HE M1A1 ERFB BT (Boat Tail)
Projectile HE M1A1 ERFB BT (Boat Tail) — a highly effective 155 mm high-explosive fragmentation artillery munition designed to provide increased firing range and effective action on the target.
It belongs to the ERFB (Extended Range Full Bore) type, which means extended range thanks to the aerodynamic shape of the projectile body. The BT (Boat Tail) version (literally: boat tail) has a tapered rear section, which helps to reduce air drag, further improving range and flight stability.
Manufacturers:
This type of projectile is produced by various countries, including:
- South Africa (Rheinmetall Denel Munition)
- South Korea (Hanwha Defense)
- Pakistan (Pakistan Ordnance Factories)
- Iraq (Fenix Insight)
- India (Indian Ordnance Factories)
Projectiles for the Asian and African markets are yellow; for the NATO and Central Asian markets — olive.
The HE M1A1 ERFB BT (Boat Tail) projectile, without a base-bleed generator, is usually supplied with the M557 fuze, the M91 and M92 propellant charge, and the M191 A2 primer (from the same manufacturer).
The HE M1A1 ERFB BT is designed to engage ground targets (counter-battery fire, enemy columns, etc.) and for barrage fire. It is used by guns with barrel lengths of 39, 45 and 52 calibers.
The projectile is described in Kropyva with the M92 propellant charge.
Technical specifications
- Year of manufacture: 2022/2023/2024
- Total mass from: 42.84 kg to 45.34 kg – without fuze
- Overall length: 843 mm – without fuze
- Body: forged steel
- Maximum range: 28.6 km (39 caliber, charge 6 M92)
- Number of fragments: ±10,700
- Safe operating temperature range: °C from -20 to +60°
Usage notes
The HE M1 ERFB BT (Boat Tail) projectile is described in Kropyva with the M92 propellant charge. This propellant charge is close in characteristics to the M232, M232A1, TC-F, TCME 100 and DM72 charges
Important! The similar HE M1 ERFB BB (BASE BLEED) projectile with a base-bleed generator has ballistic characteristics that differ from the HE M1 ERFB BT (BOAT TAIL)
Oleh Syrota (Georgich©) for the Armed Forces of Ukraine /
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