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Ashok Leyland FAT

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Ashok Leyland Field Artillery Tractor[1]
FAT 6×6 undergoing trials
TypeMedium/Heavy truck
(4×4 and 6×6)
Place of originIndia
Service history
In service2017-present
Used byIndian Army
Tanzanian Army
Production history
DesignerAshok Leyland Defence Systems
ManufacturerAshok Leyland
Produced2017–present
Specifications
Mass9,945 kg (9.945 t) (4×4)
22,000 kg (22 t) (6×6)
Length6282 mm (4×4)
8730 mm (6×6)
Width2500 mm (4×4)
2600 mm (6×6)
Height2950 mm (4×4)
3300 mm (6×6)
Crew4 operators + 6 additional spaces

Engine8.1 L I6 Neptune CRS turbo-diesel
160 hp (4×4)
360 hp (6×6)
Payload capacity3,000 kg (4×4)
8,000 kg (6×6)
Transmission6-speed manual (4×4)
8-speed manual (6×6)
Suspension
  • Semi elliptic multi leaf spring with Double acting telescopic shock absorber at Front & rear (4×4)
  • Parabolic Leaf Spring at Front & Bogie suspension at rear with shock absorber at both Front & Rear (6×6)
Ground clearance300 mm (4×4)
400 mm (6×6)
Fuel capacity212 L (4×4)
350 L (6×6)
Operational
range
700 km
Maximum speed 86 km/h
Steering
system
power-assisted steering
References[2][3]

The Ashok Leyland FAT is a family of all-terrain military truck designed, developed and produced by Indian automobile manufacturer Ashok Leyland. The design is broadly based on Ashok Leyland Super Stallion truck.[3][2] It is primarily used for towing a wide range of artillery guns. It will replace the aging fleet of KrAZ-255 and Scania SBAT111S used by the Indian Army.[4][5]

There are two variants of the truck

  • Ashok Leyland FAT 4×4 or Ashok Leyland Topchi (payload capacity of 3 tonnes)[3]
  • Ashok Leyland FAT 6×6 or Ashok Leyland GTV 6×6 (payload capacity of 8 tonnes)[2]

Development

[edit]

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.[4]

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.[6]

Design & features

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Ashok Leyland FAT 4×4

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It is powered by Ashok Leyland's in-house developed engine that gives 160 hp (120 kW) of power and 550 Nm of maximum torque. This is mated to a 6-speed manual transmission. The truck runs on full-time 4-wheel drive system with all axles having differential lock. The FAT 4×4's towing capacity is rated at 3 tonnes. The cargo bay is fitted with a crane for loading/unloading ammunition and other equipment.[3]

Ashok Leyland GTV 6×6

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Ashok Leyland FAT towing a Dhanush howitzer during Republic Day Parade 2017.

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.[7]

Other features include a fire and smoke detection unit, an infrared rear-view camera and Indeginised Rotex central tire inflation system. For driver's comfort, cab is equipped with HVAC.[8]

Production

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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 ₹825 crore.[9] In 2017, the first batch of trucks was delivered.[10]

In July 2023, another order was placed for Field Artillery Tractor (FAT) 4×4 [Ashok Leyland Topchi] and Gun Towing Vehicle (GTV) 6×6 worth ₹800 crore. The order will be executed in 12 months.[11][12][13]

Operators

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  •  India
    •  Indian Army – Field Artillery Tractor (FAT) 4×4 and Gun Towing Vehicle (GTV) 6×6
  •  Tanzania – Field Artillery Tractor (FAT) 4×4[3]

References

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  1. ^ "FAT 6x6 tech specs" (PDF). Ashok Leyland Defense Systems. Archived from the original (PDF) on 29 April 2016. Retrieved 27 February 2018.
  2. ^ a b c "FAT 6x6". www.ashokleyland.com. Retrieved 27 August 2024.
  3. ^ a b c d e "FAT 4x4". www.ashokleyland.com. Retrieved 27 August 2024.
  4. ^ a b "Indian Army orders Ashok Leyland FAT 6×6 – 2016 DefExpo". Sagar Patel. Rushlane. Retrieved 30 March 2016.
  5. ^ Dutta, Amrita Nayak (24 June 2021). "Army plans to buy 2,000 gun-towing vehicles to move medium guns on hilly & desert terrain". ThePrint. Retrieved 27 August 2024.
  6. ^ "Ashok Leyland FAT". Military Today.[dead link]
  7. ^ "ASHOK LEYLAND FAT 6X6 FIRST DRIVE REVIEW". OverDrive.in. Rahul Richard.
  8. ^ "Review:Ashok Leyland FAT 6x6". BBC TopGear. Sriram Narayanan.
  9. ^ Patel, Sagar (30 March 2016). "Indian Army orders Ashok Leyland FAT 6x6 - 2016 DefExpo (LIVE)". RushLane. Retrieved 26 August 2024.
  10. ^ "Ashok Leyland wins Rs 800 crore order from armed forces". Times of India. Retrieved 29 March 2016.
  11. ^ "Ashok Leyland bags orders worth Rs 800 crore from Indian Army". The Economic Times. 17 July 2023. ISSN 0013-0389. Retrieved 26 August 2024.
  12. ^ "Ashok Leyland bags Rs 800-crore worth of defence orders". BusinessLine. 17 July 2023. Retrieved 26 August 2024.
  13. ^ "Ashok Leyland bags Defence orders worth Rs. 800 Cr". www.ashokleyland.com. Retrieved 26 August 2024.