Ashok Leyland FAT 6×6

The Ashok Leyland FAT 6×6 is an all-terrain military truck developed and produced by Indian automobile manufacturer Ashok Leyland. Designed for towing heavy artillery guns, it will replace the aging fleet of Scania SBAT111S used by the Indian Army.

Ashok Leyland Field Artillery Tractor[1]
FAT 6×6 undergoing trails
Type6×6 heavy truck
Place of originIndia
Service history
In service2017-present
Used byIndian Army
Production history
DesignerAshok Leyland Defence Systems
ManufacturerAshok Leyland
Produced2017–present
Specifications
Mass13,752 kg (21t) (unladen)
Length8535 mm
Width2500 mm
Height3230 mm
Crew4 operators + 6 additional spaces
Engine8.1 L I6 Neptune CRS turbo-diesel
360 hp
Payload capacityrated at 8 tons (8,000 kg)
Transmission8-speed manual, 2-speed transfer case
SuspensionFront: Parabolic
Rear: Bogie
Ground clearance400 mm
Fuel capacity350 L
Operational
range
700 km
Maximum speed 86 km/h
Steering
system
power-assisted steering

Development

In 1986, when the Indian Army purchased 410 FH77B Bofors howitzers, they also ordered 660 SBAT111S trucks. 30 years later, these trucks had become obsolete and the Army looked for a replacement.[2]

Ashok Leyland is one of the biggest suppliers of logistics vehicles to Indian Army; the company's Stallion truck has over 60,000 units in service with Indian Army. Thus, the development of FAT or Field Artillery Tractor was started as a private venture to replace the ageing fleet of Scania trucks.[3]

Design & features

The truck is designed on Leyland's "Super Stallion" platform. It is powered by Ashok Leyland's in-house developed 8-litre Neptune series engine that gives 360 hp (270 kW) of power and 1,400 Nm of torque at 1,300 rpm. This is mated to an 8-speed manual transmission (2-speed transfer case). The truck runs on full-time 6-wheel drive system with all axles having differential lock.

The FAT 6x6's towing capacity is rated at 8 tonnes. The driver's cabin can hold four people and the crew cabin just behind it can hold six. The cargo bay is fitted with a 2.7 tonne crane for loading/unloading ammunition and other equipment. There is a roof hatch for observation, emergency exit and firing. At the front, the truck has a 10 tonne self-recovery winch.[4]

Other features include a fire and smoke detection unit, an infrared rear-view camera and central tire inflation system. For driver's comfort, cab is equipped with HVAC.[5]

Production

In March 2016, Ashok Leyland won a contract for supplying 450 units of the FAT 6x6 along with other "Super Stallion" vehicles and 825 units of "Ambulance 4x4" to the army. The total order was worth ₹800 crore. In 2017, the first batch of trucks was delivered.[6]

References
  1. "FAT 6x6 tech specs" (PDF). Ashok Leyland Defense Systems. Archived from the original (PDF) on 29 April 2016. Retrieved 27 February 2018.
  2. "Indian Army orders Ashok Leyland FAT 6×6 – 2016 DefExpo". Sagar Patel. Rushlane. Retrieved 30 March 2016.
  3. "Ashok Leyland FAT". Military Today.
  4. "ASHOK LEYLAND FAT 6X6 FIRST DRIVE REVIEW". OverDrive.in. Rahul Richard.
  5. "Review:Ashok Leyland FAT 6x6". BBC TopGear. Sriram Narayanan.
  6. "Ashok Leyland wins Rs 800 crore order from armed forces". Times of India. Retrieved 29 March 2016.
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