Ukraine army to receive Oshkosh Defense Family of Medium Trucks.

The U.S. Department of Defense on July 31 announced that Oshkosh Defense was awarded a $201,519,794 modification to contract W56HZV-23-F-0182 for the Family of Medium Trucks. Work will be performed in Oshkosh, Wisconsin, with an estimated completion date of July 31, 2025. Fiscal 2023 other procurement, Army funds; and Ukraine Security Assistance Initiative funds in the amount of $201,519,794 were obligated at the time of the award. Army Contracting Command, Detroit Arsenal, Michigan, is the contracting activity.
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The Family of Medium Tactical Vehicles (FMTV) is a series of military vehicles that are based on a common chassis and vary by payload and mission requirements (Picture source: Oshkosh Defense)

The Family of Medium Tactical Vehicles (FMTV) is a series of military vehicles that are based on a common chassis and vary by payload and mission requirements. The FMTV is derived from the Austrian Steyr 12M18 truck but substantially modified to meet United States Army requirements, these including a minimum 50 percent U.S. content.

There were originally 17 FMTV variants—four variants in the nominal 2.5 U.S. ton payload class, designated Light Medium Tactical Vehicle (LMTV), and 13 variants with a nominal 5 U.S. ton payload rating, called Medium Tactical Vehicle (MTV).

Since the first FMTVs were fielded in January 1996 the family has been expanded and the overall design enhanced considerably. The FMTV was originally manufactured by Stewart & Stevenson (1996–2006), then by Armor Holdings (2006–2007), next by BAE Systems Platforms & Services. Since 2011 it has been manufactured by Oshkosh Corporation.

FMTV is built around a conventional bolted / huck-bolted, cold-formed C-section chassis with bolted-in tubular cross-members. The high-grade 758 MPa steel used is sourced from Sweden. LMTV variants can be fitted with a DP-10J winch with an 11,000 lb. line pull. MTV variants use a DP-515 winch with a 15,500 lbs. line pull.

Current production FMTV A1P2s are powered by a 2007 Environmental Protection Agency (EPA) emissions-compliant 7.2-liter six-cylinder Caterpillar C7 diesel engine developing 275 hp and 860 Lb.-Ft. torque in LMTV variants and 330 hp and 860 Lb-Ft.torque in MTV variants. FMTV A1Rs have a 2004 EPA emissions-compliant version of the same engine with the same power output. FMTV A1 variants have an earlier 1998 EPA emissions-compliant version of this engine, the 3126 ATAAC which developed 275 hp at 2400 rpm and 815 Lb.-Ft.torque at 1,600 rpm in LMTV variants and 330 hp and 850 Lb.-Ft.torque in MTV variants. A 6.6-liter derivative of this engine, the 3116 ATAAC, was fitted to FMTV A0 models where it developed 225 hp and 735 Lb.-Ft. torque in LMTV variants, and 290 hp at 2600 rpm and 860 Lb.-Ft. torque in MTV variants.

The Allison 3070 SP seven-speed transmission fitted to A1P2 and A1R FMTVs has also evolved with the FMTV, its A1 designation being MD 3070 PT, its A0 designation being MD-D7. This has an integral single-speed transfer case. All-wheel drive is full-time, with a 30/70 percent front/rear torque split for on-road driving, and a 50/50 percent split for off-road driving.

All FMTV models are fitted with Meritor beam axles, the ratings and specifications of which have also evolved as the FMTV has developed. Suspension is by a combination of parabolic tapered leaf springs (inverted on the MTV rear bogie), shock absorbers, and an anti-roll bar for the rear axle/bogie.

Today’s mission requires the Oshkosh Defense FMTV A2, available in a complete range of mission-specific variants including a 5-ton Tractor, an 8.8-ton LHS, Cargo 4×4 and 6×6, a 10-ton Dump, and a 5-ton Wrecker. The FMTV A2 offers increased troop protection, while carrying additional payload and providing better ride quality and comfort.

Variants of the Family of Medium Tactical Vehicles (FMTV) (Picture source: Oshkosh Defense)

Defense News July 2023