PIB TrackerIndia unveils three indigenous micro gas turbine engines
CSIR-NAL's NJ-05, NJ-50 and NJ-100 give 5, 50 and 100 kg of thrust for tactical UAVs, drone interceptors and compact missiles — the propulsion class India has been importing.
What happened
- CSIR-NAL unveiled three indigenous micro and small gas turbine engines in New Delhi.
- They are the NJ-05 (5 kg thrust), NJ-50 (50 kg) and NJ-100 (100 kg).
- The engines are meant for tactical UAVs, drone interceptors and compact missile systems.
- The team cited advances in high-RPM turbomachinery and high-temperature combustion.
- CSIR-NAL described itself as a multi-stage integrator for India's drone ecosystem.
For Prelims
- CSIR-NAL: established 1959, based at Bengaluru, India's only government aerospace R&D laboratory in the civilian sector.
- Parent body: the Council of Scientific and Industrial Research, whose Director General is also Secretary, DSIR.
- The three engines: NJ-05 — 5 kg thrust · NJ-50 — 50 kg · NJ-100 — 100 kg.
- Applications: tactical unmanned aerial vehicles, drone interceptors and compact missile systems.
- The hard problems: high-RPM turbomachinery and high-temperature combustion — miniaturisation makes both worse, not easier.
- NAL's better-known aircraft: the HANSA light trainer and the 14-seat SARAS civil transport aircraft.
- Who unveiled them: Air Marshal Tejinder Singh, Chief of Integrated Defence Staff to the Chairman, Chiefs of Staff Committee.
For UPSC: Small gas turbines are the propulsion bottleneck under every drone and cruise-missile programme, and they are the component nobody exports willingly. Cite this wherever the argument is indigenisation of critical sub-systems rather than of platforms.
What it is NOT: These are not aircraft engines and not a fighter powerplant — at 5 to 100 kg of thrust they move drones and small missiles; and an unveiling is not a production order.
For Mains
Syllabus: GS3.12 · GS3.13 · Linkage L1
Anchor
India's drone problem has never been the airframe; it has been the engine, and the engine is the one part of the system that cannot be reverse-engineered cheaply.
Substantiation (data)
Three engines at 5, 50 and 100 kg of thrust, from a laboratory founded in 1959, covering the tactical UAV, interceptor and compact missile band.
Exemplification
The NJ-100's 100 kg of thrust is the class used by loitering munitions and drone interceptors — the systems that now decide short-range air defence.
Problematisation
A laboratory unveiling is not manufacturing capacity; CSIR-NAL itself says Indian industry and start-ups would have to build these at scale.
Way-forward
Move the engines to qualified production partners early, since propulsion certification rather than design is where indigenous programmes usually stall.
Position
The stated position is that self-reliance in aerospace has to be won at the sub-system level, one component class at a time.
Deploys into: Indigenisation of technology + awareness in new technology (GS3.12, GS3.13) · aerospace propulsion, drone ecosystems and dependence on imported critical sub-systems.
Ministry of Science & Technology · 2026-08-25 · PRID 2303065 · PIB source ↗