The Aravalli engine will be the first high-power helicopter engine designed and developed in India, after HAL and Safran Helicopter Engines signed the contract through their joint venture SAFHAL. Here are the Aravalli engine facts for prelims.
Why in News?
Hindustan Aeronautics Limited (HAL) and France’s Safran Helicopter Engines agreed to jointly design, develop and manufacture the Aravalli engine for India’s planned 13-tonne Indian Multi-Role Helicopter (IMRH) and its naval variant, the Deck-Based Multi-Role Helicopter (DBMRH).
The contract, signed through the 50:50 joint venture SAFHAL Helicopter Engines Pvt Ltd, covers development, supply and lifecycle support.
Aravalli engine: Key Facts for Prelims
- Power class: new-generation 3,500–4,000 shaft horsepower (shp) turboshaft engine.
- First time a high-power helicopter engine is being designed and developed in India.
- IMRH is meant to replace the Mi-17 fleet of the IAF and Army and the Sea King fleet of the Navy from the 2030s.
- HAL–Safran already co-produce the Shakti (Ardiden 1H1) engine that powers ALH Dhruv, Rudra and LCH Prachand.
- SAFHAL: HAL–Safran joint venture formed in 2023, headquartered in Bengaluru.
Interconnected static points
- HAL: Navratna Defence PSU, HQ Bengaluru, founded 1940 as Hindustan Aircraft Ltd by Walchand Hirachand.
- HAL helicopters: ALH Dhruv, Rudra (armed Dhruv), LCH Prachand, LUH (Light Utility Helicopter), IMRH (under development).
- Turboshaft vs turbofan: helicopters use turboshaft engines that deliver power via a shaft to the rotor; fighters use turbofans (e.g., GE F404 for Tejas).
- Other India–France defence links: Rafale, Scorpene (P-75), Safran–DRDO talks on a 110 kN engine for AMCA.
Quick Revision Table: Aravalli engine
| Point | Detail |
|---|---|
| Engine | Aravalli |
| Partners | HAL + Safran Helicopter Engines (via SAFHAL JV) |
| Power | 3,500–4,000 shp |
| Platforms | IMRH (13-tonne) and DBMRH (naval) |
| Replaces | Mi-17 and Sea King fleets |
| Existing HAL–Safran engine | Shakti (for Dhruv, Rudra, Prachand) |
| Significance | First high-power helicopter engine developed in India |
Trap / Confusing Points: Aravalli engine
| Confusion | Correct Position |
|---|---|
| Aravalli engine powers LCH Prachand | No – Prachand uses Shakti; Aravalli is for IMRH/DBMRH |
| Aravalli is a jet engine for fighters | No – turboshaft engine for helicopters |
| Safran is a US company | No – French aerospace company |
| IMRH is a light helicopter | No – 13-tonne medium-lift multi-role helicopter |
5 Practice MCQs on Aravalli engine
1. The Aravalli engine is being developed to power which helicopter?
a. Light Combat Helicopter Prachand
b. Light Utility Helicopter
c. Indian Multi-Role Helicopter
d. ALH Dhruv
Ans: C
Explanation: Aravalli will power the 13-tonne IMRH and its naval variant DBMRH.
2. SAFHAL Helicopter Engines is a joint venture between HAL and:
a. Rolls-Royce
b. Safran
c. Pratt & Whitney
d. General Electric
Ans: B
Explanation: SAFHAL is a 50:50 JV of HAL and Safran Helicopter Engines (France).
3. The Shakti engine that powers the ALH Dhruv was co-developed by HAL with:
a. Turbomeca/Safran
b. Klimov
c. Honeywell
d. Rolls-Royce
Ans: A
Explanation: Shakti is the Indian version of Safran’s (Turbomeca) Ardiden 1H1.
4. Which type of engine is used in helicopters?
a. Turbofan
b. Turbojet
c. Turboshaft
d. Ramjet
Ans: C
Explanation: Turboshaft engines deliver power to the rotor through a shaft.
5. HAL is headquartered at:
a. Hyderabad
b. Nashik
c. Bengaluru
d. Kanpur
Ans: C
Explanation: HAL’s corporate office is in Bengaluru, Karnataka.
Aravalli engine and India’s helicopter self-reliance
The Aravalli engine programme fits into India’s push for defence indigenisation under Atmanirbhar Bharat.
Helicopter engines have long been India’s weakest link in aerospace manufacturing, with rotary-wing platforms depending on imported powerplants from France, Russia or the US.
A jointly developed Aravalli engine, built with technology transfer and local production, cuts this dependence for the IMRH and future army and naval variants.
For prelims, remember that engine technology (unlike airframes) is India’s biggest indigenisation gap, tested alongside the Tejas engine (GE F404/F414) and the Kaveri engine programme.
Exam tip: Revise Aravalli engine together with the static links above; UPSC and APPSC prelims often frame questions from these interconnections.
To learn current affairs from exam point of view, Click here.
To know more about the HAL–Safran Aravalli contract, Click here.
