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HAL and Safran Sign Final Contract for Aravalli Helicopter Engine — UPSC Current Affairs 2026

Defence26 Aug 2026

HAL and Safran Sign Final Contract for Aravalli Helicopter Engine

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1
HAL and Safran Helicopter Engines signed the final contract in Bengaluru on 26 August 2026 to develop and produce the Aravalli turboshaft engine.
2
The contract is executed through SAFHAL Helicopter Engines Pvt. Ltd., the 50:50 joint venture of the two companies.
3
The Aravalli is in the 3,500-4,000 shaft horsepower class and is named after the Aravalli mountain range.
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It will power the 13-tonne Indian Multi-Role Helicopter and its naval variant, the Deck-Based Multi-Role Helicopter.
5
The IMRH is planned to replace the armed forces' Russian-origin Mi-17 medium-lift helicopters.

●Engine: Aravalli, a new-generation turboshaft named after the Aravalli mountain range
●Power class: 3,500 to 4,000 shaft horsepower
●Signed: 26 August 2026, at Bengaluru
●Executing entity: SAFHAL Helicopter Engines Pvt. Ltd., a 50:50 HAL-Safran joint venture
●Platforms: Indian Multi-Role Helicopter (IMRH) and Deck-Based Multi-Role Helicopter (DBMRH)

Helicopter class

13 tonnes

Engine power class

3,500-4,000 shaft horsepower

Joint venture

SAFHAL Helicopter Engines Pvt. Ltd., formalised in November 2023 after an MoU in July 2022

Manufacturing location

Tumakuru, Karnataka

Scope of contract

Design, development, manufacture, supply and lifecycle support

Turboshaft engine

A turboshaft is a gas turbine arranged so that almost all the energy extracted from the hot gas is converted into rotating shaft power rather than into jet thrust. That shaft drives the helicopter's main and tail rotors through a reduction gearbox and transmission. A turbofan, by contrast, is optimised to push air backwards to produce thrust for a fixed-wing aircraft. Helicopter engine output is therefore rated in shaft horsepower (shp) rather than in pounds of thrust - which is why the Aravalli is described as a 3,500-4,000 shp class engine.

Simple Analogy: A turbofan is a fan blowing the aircraft forward; a turboshaft is the same engine core connected to a drive shaft, like a car engine turning wheels instead of blowing air.

The Indian Multi-Role Helicopter is HAL's programme for a 13-tonne class medium-lift helicopter intended to replace the Mi-17 fleet of Russian origin that the Indian Air Force and Army have operated for decades. The Deck-Based Multi-Role Helicopter is its naval variant, designed for shipborne operations with the folding rotors, corrosion protection and deck-handling features that shipboard flying requires. India has repeatedly found that airframes are easier to indigenise than engines: an aero-engine demands metallurgy, hot-section design and certification experience that take decades to accumulate, which is why the engine is being co-developed with a foreign partner rather than imported outright or attempted alone. HAL has said the engine family could later support civil roles such as offshore transport, utility missions and VVIP transport, and the programme includes building domestic Maintenance, Repair and Overhaul capability for it.

Hindustan Aeronautics Limited (HAL)

Indian defence public sector aerospace manufacturer and the IMRH programme's prime developer

Head: Ravi K (Chairman and Managing Director)HQ: Bengaluru, Karnataka

Safran Helicopter Engines

French helicopter engine manufacturer and HAL's partner in the Aravalli programme

Head: Cedric Goubet (Chief Executive Officer)

SAFHAL Helicopter Engines Pvt. Ltd.

The 50:50 HAL-Safran joint venture that will design, develop and produce the Aravalli engine

Aero-engine indigenisation

The Aravalli sits alongside the Kaveri programme and India's search for a fighter-engine partner as part of a long-running effort to close the country's biggest aerospace capability gap - propulsion.

India-France defence ties

Safran is one of the principal French industrial partners in Indian defence aerospace, and engine co-development has been a recurring theme in India-France strategic discussions.

Atmanirbhar Bharat in defence

Lifecycle support and domestic MRO capability written into the contract reflect the shift from buying platforms abroad to owning the sustainment chain at home.

Exam Relevance

upsc

GS Paper 3 > Security: Defence Technology and Indigenisation

defence

General Awareness > Defence Programmes and Equipment

ssc

General Awareness > Defence and Science

railway

General Awareness > Current Events

Expected Questions

★Aero-engine development has been India's most persistent aerospace capability gap. Examine, with reference to recent co-development agreements. (UPSC Mains)
★The Aravalli engine will power which helicopter programme? (Defence/SSC)
★SAFHAL is a joint venture between HAL and a company of which country? (Railway/SSC)

Key Terms

Turboshaft

A gas turbine engine that delivers its output as rotating shaft power, used to drive helicopter rotors through a transmission.

Shaft horsepower (shp)

The unit in which turboshaft and turboprop engine output is rated, as opposed to thrust for turbofans.

MRO

Maintenance, Repair and Overhaul - the long-term sustainment of aircraft, engines and components.

DBMRH

Deck-Based Multi-Role Helicopter, the naval, shipborne variant of the IMRH.

priority_highMust Remember

•Aravalli: 3,500-4,000 shp class turboshaft, for the 13-tonne IMRH and its naval DBMRH variant.
•Developed by SAFHAL, the 50:50 HAL-Safran joint venture formalised in November 2023; manufacturing at Tumakuru, Karnataka.
•Final contract signed at Bengaluru on 26 August 2026.
•The IMRH is intended to replace the Mi-17 medium-lift fleet of Russian origin.

tips_and_updatesExam Tips

•Group HAL's rotary-wing programmes for revision: Dhruv (ALH), Rudra, Light Combat Helicopter Prachand, Light Utility Helicopter, and the IMRH/DBMRH in the 13-tonne class.

Question 1 of 3Score: 0/0

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