HMMVW (Humvee)

Product Type:

Lightweight four-wheel-drive (4WD) tactical vehicle

Using Service (US):

Army and Marine Corps (USMC)

Program Status:

Recapitalization, Upgrades and Sustainment

Prime Contractor:

AM General, LLC

The HMMWV

About the HMMWV:





The High Mobility Multi-purpose Wheeled Vehicle (HMMWV) is a lightweight, four-wheel-drive (4WD), diesel-powered, tactical vehicle. It uses a common chassis and can carry a wide variety of weapons, including machine guns and tube-launched, optically tracked, wire-guided (TOW) anti-armor missile launchers.

The HMMWV has a low profile (6 feet tall), is 7 feet wide and 15 feet long. The vehicle has high ground clearance (16 inches), which allows for excellent mobility. The proportions of the HMMWV makes for a stable, "road-hugging" vehicle that is very hard to roll over.

The HMMWV employs a high-grade alloy steel frame. The body of the HMMVW base variant is made of aluminum, which reduces the vehicle's weight and helps prevent corrosion. The body is designed to flex to accommodate off-road use. The HMMWV A2 series vehicles are powered by a General Engine Products (an AM General subsidiary) V8 6.5-liter Optimizer 6500 diesel engine with 160 shp and can reach speeds of more than 70 mph. The engine is coupled to a 4-speed automatic transmission and full-time 4WD transfer case. The HMMWV has power steering and power-assisted hydraulic disc brakes. The HMMWV uses military 37x12.5 radial tires with low-profile "runflat" devices. Some HMMWVs are equipped with an optional central tire inflation system (CTIS), which enables the driver to adjust tire pressure from his seat "on the go" to adapt to changing terrain conditions, thus allowing for maximum off-road mobility. The vehicles have either a 1+1 or 2+2 seating configuration depending on the model. The HMMWV uses a 12/24-volt electrical system and comes with a 25-gallon fuel tank.

The different HMMWV configurations (cargo/troop carriers, weapons carriers, ambulances and shelter carriers) share a common chassis, engine and transmission with a total of 44 interchangeable parts used in more than one position. This results in fewer training hours needed for mechanics. Also, the HMMWV simplified supply, maintenance and logistics system (essentially one set of common parts for 15 configurations) reduces life-cycle costs and saves tax dollars.

The newest HMMWV is the Expanded Capability Vehicle (ECV), which is an up-armored version and the 4th generation HMMWV. It is designed to provide greater protection without sacrificing mobility and performance. The armor is available in an 'A' kit and a 'B' kit that, when combined, provide gapless mine and ballistic protection. HMMWV armor includes underbody armor, rocker armor, lower windscreen deflecting armor, perimeter armor, overhead armor, and rear ballistic bulkhead armor. Additional fragmentation kits are all field installable and removable, which provides flexibility for missions that do not require the added protection. The ECVs are heavier than the A2 HMMWVs but also have more powerful 190 hp engines vs. 160 hp for the A2 series.

The U.S. Navy and U.S. Air Force are also using the HMMWV + the Special Operations Command (SOCOM) Ground Mobility Vehicle (GMV) 1.0 is a special forces modified HMMWV M1165A1/B3.

HMMWVs are air transportable and droppable and can be sling-loaded by military helicopters (CH-47 and CH-53 carries two - UH-60 carries one). Three HMMWVs can be carried inside a C-130 Hercules, four in a C-130J-30, ten in a C-17 Globemaster III, and as many as 15 in a C-5 Galaxy/Super Galaxy. Also, in combat conditions, the HMMWV can be airdropped using the Low Altitude Parachute Extraction System.

In the late 1970s, the U.S. Army decided it needed a new and better vehicle to replace the M561 Gama Goat, the M151-series Jeep, and civilian trucks adapted for military use. The Army wanted a new jack-of-all-trades light tactical vehicle and, in 1979, issued a draft specification for a new tactical vehicle to replace all tactical vehicles in the 1/4-ton to 1 1/4-ton range. AM General won the bid to build the HMMWV (Chrysler Defense and Teledyne Continental were the other companies in the competition) and was awarded the initial production contract for 2,334 HMMWVs in March 1983. This was the first increment of a five-year contract for almost 55,000 vehicles. These were produced in 15 different configurations. Of these vehicles, 39,000 were for the U.S. Army and the remainder was split between the Marine Corps, the Air Force and Navy. Production started at AM General's Mishawaka plant in Indiana in the fall of 1984 and the first HMMWVs were delivered in early 1985. According to AM General, the total production by mid-1991 was more than 72,000 vehicles including international sales. By March 1995, approximately 100,000 HMMWVs had been built with the total tally, as of 2012, standing at 281,000 vehicles produced.

With the last vehicles ordered in 2010, the U.S. Army is no longer purchasing new-build HMMWVs (the Air Force is still purchasing the HMMWV ECV) and is focusing on recapitalizing vehicles returning from theater. A new vehicle, the Joint Light Tactical Vehicle (JLTV), will replace the HMMWV. The JLTV is currently in the development phase with purchases beginning in FY 2015. The advent in Iraq and Afghanistan of remotely-controlled Improvised Explosive Devices (IED) took its toll on the fleet of unarmored flat-bottom HMMWVs, thus creating a need for a new light tactical vehicle with better protection. The HMMWV was never designed to withstand IED or mine blasts. HMMWV up-armoring through the addition of armor plates has provided increased crew protection, however, the increased weight has reduced the vehicle's payload capacity, maneuverability, off-road mobility, and air transportability.



Armament/Weapons:

Armament/TOW missile carrier HMMWVs can be equipped with the M240 7.62mm machine gun, the M2 .50 caliber machine gun, the Mk 19 40mm grenade launcher, or the Raytheon BGM-71 TOW II anti-tank missile system.



Price/Unit Cost:

In FY 2012, the price of an HMMWV ECV was in the $140,000-$240,000 range depending on variant.



Mission/Role:

To provide a common light tactical vehicle capability.



FY 2014 HMMWV DoD Program:

FY 2014 procurement funds in the amount of $100 million will upgrade 900 older Army National Guard (ARNG) HMMWVs to the latest configuration. Also, the Marine Corps' HMMWV modification program provides $5.9 million to restore payload and performance to extend the service life and enhance the durability of those ECVs not replaced by JLTV out to 2030.



FY 2015 HMMWV DoD Program:

FY 2015 procurement funds in the amount of $57.3 million will support the USMC's HMMWV Sustainment Modification Initiative. FY 15 provides for the procurement of modification kits and subsequent fielding. The modification kits consist of upgrading major subsystems (frame, suspension, power train, cooling, brakes) and subcomponents needed to modify armored HMMWV ECVs, in order to achieve pre-armoring levels of safety, performance, payload capacity, and reliability. The increase will allow the program to procure modification kits to support the modification and improvement of the HMMWV ECV fleet.

For more information, click to see the FY 2015 USMC HMMWV Modifications Budget.




Source: U.S. Department of Defense (DoD) and AM General, LLC

Specifications Armament DoD Spending FY2015 Budget

Last Update: June 6, 2014.

By Joakim Kasper Oestergaard /// (jkasper@bga-aeroweb.com)

External Resources:



AM General: HMMWV (Humvee)


AM General: HMMWV A2 Series Vehicles


AM General: HMMWV Expanded Capacity Vehicles (ECV)



YouTube: HMMWV | YouTube Videos



Fact Sheet: Not Available

HMMWV U.S. Defense Budget Charts:

DoD Spending on the HMMWV Family of Vehicles in FY 2011, FY 2012, FY 2013, FY 2014 and FY 2015
DoD Upgrades of HMMWV Vehicles in FY 2011, FY 2012, FY 2013, FY 2014 and FY 2015
Defense Budget Data

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DoD Spending, Procurement and RDT&E: FY 2011/12/13 + Budget for FYs 2014 + 2015

DoD Defense Spending, Procurement, Modifications, Spares, and RDT&E for the HMMWV

Download Official U.S. Department of Defense (DoD) Budget Data:

RECAP of HMMWV Vehicles (ARMY) Modification of HMMWV Vehicles (USMC)
HMMWV ARNG Modifications (ARMY)
Specifications

Specifications: HMMWV A2 Series

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Specifications | M1097A2 HMMWV Base Variant

Primary Function: Light tactical vehicle
Prime Contractor: AM General, LLC
Power Plant: 1x V8 6.5L Diesel Engine with 160 HP (120 KW) at 3,400 RPM
Transmission: 4-speed automatic
Suspension: Independent double A-frame with open-end coil springs and hydraulic shock absorbers
Length: 15 ft 11 in (4.84 m)
Height: 6 ft 2 in (1.88 m)
Width: 7 ft 1 in (2.16 m)
Weight: 5,900 lbs/2.95 tons (2,676 kg)
Power-to-Weight Ratio: 54.24 hp/ton (59.79 hp/metric ton)
Payload: 4,400 lbs (1,996 kg)
Fuel Type: Diesel
Fuel Capacity: 25 gallons (94 liters)
Speed: Max: 70+ mph (113+ km/h)
Acceleration: 0-30 mph: 9.4 seconds; 0-50 mph: 26.1 seconds
Range: 275 miles (443 km)
Crew: Two (1+1)
Price/Unit Cost: No recent price estimate available.
Deployed: Unknown

Specifications | M1025A2 Armament/TOW Missile Carrier w/Basic Armor

Primary Function: Light tactical vehicle
Prime Contractor: AM General, LLC
Power Plant: 1x V8 6.5L Diesel Engine with 160 HP (120 KW) at 3,400 RPM
Transmission: 4-speed automatic
Suspension: Independent double A-frame with open-end coil springs and hydraulic shock absorbers
Length: 15 ft 11 in (4.84 m)
Height: 6 ft 4 in (1.93 m)
Width: 7 ft 1 in (2.16 m)
Weight (Curb): 6,780 lbs/3.39 tons (3,075 kg)
Power-to-Weight Ratio: 47.20 hp/ton (52.03 hp/metric ton)
Payload: 3,520 lbs (1,597 kg)
Fuel Type: Diesel
Fuel Capacity: 25 gallons (94 liters)
Speed: Max: 70+ mph (113+ km/h)
Acceleration: 0-30 mph: 9.4 seconds; 0-50 mph: 26.1 seconds
Range: 275 miles (443 km)
Crew: Four (driver, gunner and two troops)
Price/Unit Cost: No recent price estimate available.
Deployed: Unknown

Armament/Weapons:
1x Mk 19 40mm grenade launcher or
1x Raytheon BGM-71 TOW II anti-tank missile system or
1x M240 7.62mm machine gun or
1x M2 .50 cal machine gun.

Variants | HMMWV

M998
M1097
M1037/M1042
M1038
M1043/M1044
M1045/M1046
M997 Ambulance
M1035 Soft Top Ambulance
M1097A1 Base Variant
M1097A2 Base Variant
M1097A2 Cargo/Troop Carrier/Prime Mover
M1097A2 Shelter Carrier
M1123 Cargo/Troop Carrier
M1025A2 Armament/TOW Missile Carrier w/Basic Armor
M1043A2/M1044A2/M1045A2 Armament/TOW Missile Carrier w/Supplemental Armor
M997A2 Ambulance w/Basic Armor
M1035A2 Soft Top Ambulance
M1113 ECV - Special operations and communications shelter
M1114 ECV - Scout, military police and explosive ordinance disposal
M1116 ECV - U.S. Air Force version of the M1114
M1151A1 ECV - Armament carriers
M1152A1 ECV - Troop carrier/shelter carrier
M1165A1 ECV - Command and control vehicle
M1167A1 ECV - TOW/Armament Carrier HMMWV

M1101 - HMMWV 0.75 ton Light Tactical Trailer (LTT)
M1102 - HMMWV 1.25 ton Light Tactical Trailer (LTT)

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