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M87 100 mm antitank gun

The 100 mm antitang gun M87 is a typical towed artillery piece, designed for anti-armour engagements. As the gun was created by successful marrying of components of the 122 mm howitzer D30J and the 100 mm antitank gun T-12 (2A19-M), it features the best properties of these two weapons, namely:

• The gun uses all types of ammunition for the 100 mm antitank gun T-12 and retains the original outer ballistics;
• Its three-trailed carriage enables full circle field of action, quick transfer of fire and engagement of highly mobile armoured targets;
• Folding the barrel over trails in traveling position ensures the weapon's high mobility, stability in transport and excellent terrain negotiating properties;
• Comfortable and reliable tracking of moving targets as the gunner's seat is mounted on upper carriage;
• Auxiliary wheels fitted to the trails enable easy movement about the firing position by forces of the crew and rapid setting up in combat position;
• Advanced opto-electronic day/night fire control system and laser range finder ensure quick reaction time, day and night and in low visibility conditions, and high first round hit probability;
• Reliable brakes and proper signal lights provide for safe towing over public roads

Main data

Caliber Barrel length Field of action: - in azimuth  - in elevation Total weight 100 mm 6300 mm 360o -5o to +18o 3650 kg

Dimensions, traveling position

Length Width Height Road clearance Firing line height Wheel tread 7670 mm 2215 mm 1660 mm 330 mm 900 mm 1840 mm

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Ballistic data
Ammunition

Round with sub caliber, tracer projectile BM1 and BM2: Muzzle velocity Flat trajectory range for 2 m high target Flat trajectory range for 3 m high target Round with HEAT-T projectile BK2: Muzzle velocity Flat trajectory range for 2 m high target Flat trajectory range for 3 m high target Round with HE projectile OF3: Maximum firing range 1575 m/s 1880 m 2230 m 975 m/s 1020 m 1200 m 8200 m

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Operational data

Rate of fire: - Maximum - Normal Transitional times: - From traveling to combat position - From combat to traveling position Time to set FCS on weapon Time to remove FCs from weapon Number of the crew 14 rds/min 8 rds/min 150 sec 180 sec 75 sec 50 sec 5-7

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Fire control system

In addition to conventional sighting devices (passive day/night sight ON 100-M78, panoramic sight P-M78, range finder D100-M78, collimator K-M78), the gun is equipped with an opto-electronic day/night fire control control system which incorporates a laser range finder.

This fire control system enables:

• Memorizing of all required data for four types of ammunition
• Determining the target movement velocity
• Target ranging,
• Automatic sighting mark displacement in the field of view, taking into account ammunition type, current meteo-ballistic conditions, charge temperature, target speed and range and deviation of the projectile muzzle velocity.

Main technical data of the fire control system:

Laser range finder:

Maximum range Minimum range ranging accuracy Radial target resolution 9995 m 200 m +/- 5 m less than 40 m

Range of corrections possible:

Cross or frontal view Environmental temperature Atmospheric pressure Muzzle velocity Powder charge temperature angle of tilt Power source, NiCd battery +/- 30 m/s 243-323 K 800-1450 mbar +/- 50 m/s 243-323 K +/- 15o 12 V, 10 Ah

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Other data

Maximum tracking field:
- in elevation 100 mrad
- in azimuth 200 mrad

Sources and Resources

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