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M247 Sergeant York

40-mm self-propelled anti-aircraft gun

M247 Sergeant York SPAAG

The M247 Sergeant York program was cancelled with only about 50 vehicles built

 
 
Entered service 1981
Crew 3 men
Dimensions and weight
Weight 54.4 t
Length (gun forward) 7.67 m
Hull length 6.42 m
Width 3.63 m
Height 3.42 m
Armament
Main gun 2 x 40-mm
Projectile weight 0.96 kg
Maximum slant range 4 km
Maximum firing range 12.5 km
Rate of fire 600 rpm
Elevation range - 5 to + 85 degrees
Traverse range 360 degrees
Ammunition load
Main gun 580 rounds
Mobility
Engine Continental AVDS-1790-2D diesel
Engine power 750 hp
Maximum road speed 48 km/h
Range 500 km
Maneuverability
Gradient 60%
Side slope 30%
Vertical step 0.9 m
Trench 2.6 m
Fording 1.2 m

 

   In the late 1970s some 35-40 mm self-propelled anti-aircraft guns were under development in the USA. These developments were carried under the DIVAD (DIVision Air Defense) programme. It was intended to replace the ageing M163 Vulcan SPAAG. The Ford Aerospace and Communications Corporation had been selected as one of two companies to enter full-scale engineering development of the DIVAD gun system. In 1981 its artillery system entered service with the US Army as the M247 Sergeant York. First 12 production vehicles were ordered the same year. A total of 618 units were planned, however only about 50 vehicles were built. Funding of the programme was cancelled in 1985 due to unsatisfactory performance and a number of technical problems. The main reasons were insufficient range of fire against air targets, low traveling speed and a number of troubles with the tracking radar. The M247 Sergeant York was withdrawn from service short after.

   The M247 is fitted with fully-stabilized twin 40-mm Bofors anti-aircraft guns. These guns have improved rate of fire. Vehicle can fire accurately on the move. The M247 fires HE and HE-FRAG rounds against air targets and AP rounds against armored vehicles. A total of 580 rounds are carried. Reloading takes less than 15 minutes.

   The Sergeant York is fitted with the Westinghouse AN/APG-68 search and track radar. It is a modified fire control radar of the F-16 fighter aircraft. The M247 radar has a tracking range range of 40 km. The Sergeant York is also fitted with a laser rangefinder and digital fire control system.

   The M247 Sergeant York has cast hull and welded turret. Its armored hull provides protection against small caliber armor-piercing projectiles, however turret protection is only against small arms fire and artillery shell splinters. Vehicle is fitted with NBC protection system.

   Vehicle has a crew of three, including commander, gunner and driver.

   The M247 Sergeant York is based on the M48A5 Patton medium tank chassis. It is powered by the Continental AVDS-1790-2D diesel engine, developing 750 horsepower. It is worth mentioning that the M247 had a maximum road speed of only 48 km/h and it could not keep pace with the M1 Abrams and M2 Bradley vehicles, it was designed to protect. Eventually it was replaced by the M1097 Avenger and the M6 Linebacker short-range air defense systems.

 

Video of the M247 Sergeant York self-propelled anti-aircraft gun

 
M247 Sergeant York SPAAG

M247 Sergeant York SPAAG

M247 Sergeant York SPAAG

M247 Sergeant York SPAAG

M247 Sergeant York SPAAG

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