AS90

   The AS90 self-propelled howitzer (AS - Artillery System) evolved from the international SP70 programme, which was cancelled in late 1980s due to funding problems. The AS90 artillery system was developed by Vickers. It entered service with the British Army in 1993. Production completed in 1995. A total of 179 self-propelled howitzers were built for the British Army. It replaced the FV433 Abbot and the US M109 self-propelled howitzers.

   The AS90 is fitted with 155-mm / L39 howitzer, which was developed from the FH70 towed howitzer. It is fitted with an automated loading system. The AS90 is compatible with all standard NATO 155-mm ammunition. Maximum range of fire is 24.7 km with standard HE-FRAG projectile and 32 km with a rocket assisted projectile. A total of 48 rounds are carried. The AS90 is capable of firing 3 rounds in 10 seconds. Maximum rate of fire is 6 rounds per minute, sustained - 2 rounds per minute.

   Secondary armament consists of 7.62-mm machine gun. The AS90 is also fitted with smoke grenade dischargers.

   The AS90 has a welded hull and turret. It's armor provides protection against small arms fire and artillery shell splinters. It is claimed that front armor can withstand 14.5-mm armor-piercing rounds. All-round protection is against 7.62-mm armor-piercing rounds. Vehicle is fitted with an NBC protection and automatic fire suppression systems.

   Vehicle is powered by the Cummins VTA903 turbocharged diesel engine, developing 660 horsepower. Vehicle is mated with transmission and can be removed in field conditions during an hour. The AS90 is also fitted with auxiliary power unit. It powers all systems when the main engine is shut down. The AS90 has a number of automotive components from the Challenger 1 main battle tank.

   The AS90 is supported by a Foden DROPS 8x8 high mobility logistic support vehicle, fitted with a load handling system. It is used to transport ammunition. This truck can also carry a replacement engine for the AS90 in it's trailer.

Variants

   AS90D (Desert), variant of the AS90 modified for desert use. It is fitted with thermal protection for the crew and improved engine cooling;

   AS90 Braveheart, upgrade programme of the AS90. It is fitted with longer 155 / L52 gun. This self-propelled howitzer has improved range of fire. It's maximum range is 30 km with standard projectile and 40 km with rocket assisted projectile. This project was terminated;

   Krab, Polish self-propelled howitzer, fitted with the AS90 Braveheart turret on a modified T-72 main battle tank chassis. Polish requirement is for 80 howitzers of this type.