Hindustan Aeronautics Limited’s Combat Air Teaming System (CATS) Warrior unmanned combat aerial vehicle is progressing toward its first flight, with testing targeted for 2024. The program, initiated in 2018, represents one of India’s most ambitious steps into the loyal wingman domain—autonomous aircraft designed to operate in concert with manned fighters. First revealed to the public at Aero India 2021, the CATS Warrior is envisioned as a force multiplier for the Indian Air Force, capable of extending the reach and survivability of manned assets.
The Warrior’s design features a twin-engine configuration and autonomous control architecture, enabling it to fly either alongside or behind a lead fighter. Its operational concept centers on protecting the manned aircraft’s vulnerable rear sector while also engaging aerial and ground targets. This approach mirrors a growing global trend in air combat doctrine, where unmanned systems are integrated into mixed formations to absorb risk, expand sensor coverage, and deliver precision strikes without endangering pilots.
According to an HAL source, “The CATS Warrior is currently in wind tunnel testing. Our original timetable for deployment was 2024–25 and we expect flight testing of the CATS Warrior to start in 2024.” This phase of testing is critical for validating aerodynamic performance, stability, and control characteristics before moving to full-scale flight trials.
Powerplant selection is a pivotal element of the program. HAL has identified two indigenous engine options. The first, the PTAE-7, is a 400 kg, 3.43 kN single-spool turbojet developed in the 1980s. While proven in earlier applications, its thrust output is modest by modern UCAV standards. The second option, the HTFE-25, is a more contemporary 25 kN turbofan under active development. This engine features a twin-spool, mixed-flow, low-bypass configuration. The low-pressure spool incorporates a three-stage low-pressure fan driven by a single-stage low-pressure turbine, while the high-pressure spool consists of a five-stage high-pressure compressor driven by a single-stage high-pressure turbine.
HAL has stated its goal of certifying the HTFE-25 by 2025. The company believes that integrating two of these engines into the Warrior will deliver performance comparable to frontline combat aircraft, a capability that could allow the UCAV to keep pace with manned fighters during high-speed ingress and egress operations. “As the CATS Warrior is a twin-engined design, we believe that using two HTFE-25 engines will give the UCAV the necessary performance to match frontline combat aircraft,” the HAL source said.
The choice between the PTAE-7 and HTFE-25 will influence not only thrust-to-weight ratio but also fuel efficiency, range, and payload capacity. A twin HTFE-25 configuration would likely enable higher dash speeds and greater endurance, aligning with the operational demands of deep strike or escort missions. From a systems integration perspective, the UCAV’s avionics, sensor suite, and weapons management systems will need to be optimized for autonomous operation, with robust datalinks to ensure coordination with manned assets.
Globally, loyal wingman programs are being pursued to address the challenges of contested airspace, where survivability and adaptability are paramount. By fielding an indigenous design, HAL is positioning India to reduce reliance on foreign suppliers while cultivating domestic expertise in advanced aerostructures, propulsion, and autonomous control algorithms. The CATS Warrior’s development also dovetails with broader trends in modular unmanned platforms, where airframes can be adapted for reconnaissance, electronic warfare, or strike roles depending on mission requirements.
Wind tunnel testing, currently underway, will refine the Warrior’s aerodynamic profile, assessing parameters such as lift-to-drag ratio, stability margins, and control surface effectiveness. These data will inform final design adjustments before the transition to prototype flight testing. The 2024 target for first flight suggests that HAL is advancing on a compressed schedule, balancing propulsion development timelines with airframe integration milestones.
If successful, the CATS Warrior could mark a significant leap in India’s unmanned combat capabilities, offering a domestically produced, high-performance platform that complements and extends the effectiveness of manned fighter fleets.