M110A2 American 203mm Self-Propelled Howitzer (SPH)
M110A2
Self-Propelled Howitzer (SPH)
Other
Basic Information
Name
M110A2 American 203mm Self-Propelled Howitzer (SPH)
Designation
M110A2
Alternate Designation
M110A2
Equipment Type
Self-Propelled Howitzer (SPH)
Manufacturer
General Motors Corp
Date of Introduction
1980
Description
The M110A2 is the largest available self-propelled howitzer in the Army's inventory. It is deployed in division artillery of general support battalions and in separate corps- and Army-level battalions. Missions include general support, counter battery fire, and suppression of enemy air defense systems. The M110A2 is a self-propelled heavy artillery cannon with a crew of 12. Designed to be part of a common family of weapons utilising the same chassis components, the M107 and M110 were essentially the same vehicle mounting different barrels. This full-tracked, self-propelled artillery weapon that fires a 200-pound, eight-inch diameter projectile. The shell leaves the muzzle at a velocity of 2,300 feet per second and can travel more than 18 miles.
Ground Specifications
Crew
5
Mobility Type
Tracked
Main Weapon
203mm Howitzer
Engine
Detroit Diesel 8V-71T 569-cu in (9.32-liter) liquid-cooled, 2-stroke, turbocharged V-8 diesel (805 hp)
NBC Protection
Yes
Max Speed
55.0 km/h
Range
29.0 km
Variants
M110A1
M110A1, improved variant of the M110, fitted with a longer M201 203 mm/L37 howitzer. It entered service in 1971. Maximum range of fire was increased to 27 km. This self-propelled howitzer fires newly developed rocket-assisted, cluster projectiles, nuclear and chemical projectiles.
System
Alternative Designation
M110A2
Type
Self Propelled Howitzer
Manufacturer
General Motors Corp.
In Service
1980-Present
Family
M110 Series
Crew
5 (commander, driver, 3 gunners) ea
Resupply Vehicle
+ 8 in the associated M548 ammunition resupply vehicle.
Chassis
chassis identical to the M110's
Displacement Time
1 min
Emplacement Time
1 min
Note
Support crew of 8 men are carried by an escorting armored personnel carrier, which also transports ammunition for this SPH.
Dimensions
Length, with Gun Forward
10.72 m
Length, Hull
5.72 m
Barrel Length
8.36 m
Width
3.15 m
Height (To the Top of the Barrel)
3.15 m
Weight, Combat
31.2 tons
Weight, Unloaded
28.1 tons
Ground Pressure
0.76 kg/sq cm
Length of Track on the Ground
3.94 m
Track Width
0.39 m
Automotive
Engine Name
1 x Detroit Diesel 8V-71T Engine
Engine Type
Detroit Diesel 8V-71T 569-cu in (9.32-liter) liquid-cooled, 2-stroke, turbocharged V-8 diesel
Engine Power
805 hp
Power-to-Weight Ratio
14.28 hp/metric ton
Cruising Range
523 km
Speed, Maximum Road
55 km/h
Speed, Average Cross
15
Speed Maximum Swim
Not Amphibious km/h
Gradient
60 deg
Side Slope
30 deg
Vertical Step
1 m
Trench
2.3 m
Fording Depth
1.2 m
Fuel Capacity
1,137 liters
Suspension
torsion bar, 5 roadwheels, front drive, last road wheel acts as rear idler, shock absorber on each roadwheel, no return rollers ability to lock suspension out when firing rear-mounted hydraulic spade for bracing firing platform.
Communications
Primary Radio
INA
Secondary Radio
INA
Main Gun
Note #2
The M110A2 can fire zone 9 projectiles.
System
Name
M201 Howitzer, 203mm Howitzer
Type
203 mm
Length, Barrel
8.24 m
Breech Type
Interrupted Screw
Recoil Type
hydro-pneumatic
Max Rate of Fire
2+ rd/min
Normal Rate of Fire
1 rd/2 min
Muzzle Brake Type
Double-baffle muzzle brake
Max Elevation
+65 deg
Min Elevation
-2 deg
Traverse Range
60 deg
Traverse Left
30 deg
Traverse Right
30 deg
Maximum Range
32.2 km
Ammunition (Option 1)
Type
M650
Type
HERA (Charge 9)
Caliber
203 mm
Projectile Length
1,116 mm
Projectile Weight
90.78 kg
Muzzle Velocity
710 m/s
Maximum Effective Range
30,000 m
Basic Load
2 ea
Fuse Type
INA
Ammunition (Option 2)
Name
M509
Type
DPICM
Caliber
203 mm
Projectile Length
1,115 mm
Projectile Weight
96.6 kig
Muzzle Velocity
711 m/s
Maximum Effective Range
22,500 m
Basic Load
2 ea
Fuse Type
INA
Ammunition (Option 3)
Name
M106
Type
HE
Caliber
203 mm
Projectile Length
871 mm
Projectile Weight
92.53 kg
Muzzle Velocity
711 m/s
Maximum Effective Range
22,900 m
Basic Load
2 ea
Fuse Type
INA
Note
The M110 can also fire the following types of 203mm projectiles: M404 HE, M426 CHEM.
Fire Control
Name
INA
Computerized FCS
INA
Thermal Sight Vehicle Commander
Infrared night-vision equipment
Thermal Sight Gunner
Infrared night-vision equipment
Main Gun Stabilization
Yes, The large spade at the rear is required for the massive recoil.
Direct Fire Telescope
Direct Dire Elbow Telescope
Protection
Hull Armor
20-mm maximum (estimated)
Turret Armor
20-mm maximum (estimated)
Applique Armor
No
Explosive Reactive Armor
No
Active Protection System
INA
Mine Clearing
No
Self-Entrenching Blade
INA
NBC Protection
Yes
Smoke Equipment
INA
IR Signature
INA
Note
This artillery system carries no defensive armament, except individual weapons carried by the crew.
Details
Country of Origin
United States
Category
Self-Propelled Gun/Howitzer Artillery Systems
Land > Artillery > Self-Propelled Gun/Howitzer Artillery Systems
Filter Label
M
Classification
Domain
Ground
Equipment Status
Active
Dimensions
Length
10.72 m
Width
3.15 m
Height
—
Weight
31200 kg
Operators (10)
Japan
Turkey
Iran
Pakistan
Bahrain
Egypt
Greece
Jordan
Morocco
Taiwan
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