Advancements in Unmanned Systems: Highlights from Korean Air’s Showcase

At the recent Seoul exhibition, Korean Air presented a wide array of unmanned systems, significantly broadening its military aviation offerings. Among the noteworthy innovations revealed were the Low Observable Wingman UAV System (LOWUS), the KUS-FX, and two variants of Loitering Munitions.

Expanding Military Aviation Capabilities

Korean Air, recognized primarily as South Korea’s largest airline, is diversifying its portfolio by venturing into aircraft manufacturing and military aviation, particularly focusing on unmanned systems. During the ADEX 2023 event, the company showcased several developmental UAVs and UCAVs, with the 2025 edition in Seoul introducing new airframes that fortify this growing expertise.

Key Unmanned Systems Presented

1. LOWUS (Low Observable Wingman UAV System)

   • Development: Jointly developed with the Korean Agency for Defense Development (ADD), the LOWUS aims to function as a partner to the KF-21 future fighter aircraft.
   • Specifications:
     • Length: 10.4 meters
     • Wingspan: 9.4 meters
     • Height: 2.3 meters
     • Propulsion: 5,500 lbf thrust turbofan
     • Speed: Maximum of Mach 0.85; cruise at Mach 0.6
     • Endurance: Exceeding 3 hours
     • Payload: 500-600 kg (capable of carrying air-to-ground missiles)
   • Capabilities: It will utilize manned-unmanned teaming (MUM-T) for collaboration with piloted aircraft, enhancing operational flexibility and effectiveness.

2. KUS-FX

   • Description: This cruise missile features a compact design for stowed launch from a square-section canister.
   • Specifications:
     • Length: 4 meters
     • Launch Mass: 226 kg
     • Propulsion: Turbojet providing 1,300 N thrust
     • Speed: Maximum of Mach 0.85; cruising at Mach 0.6-0.7
     • Endurance: 1.5 hours
     • Operational Altitude: 20,000 feet
   • Modularity: The KUS-FX sports a modular architecture facilitating rapid reconfiguration for varied missions—range specifics remain classified.

3. Loitering Munitions

   • Small Loitering Munition (LM):
     • Length: 1.5 meters
     • Wingspan: 1.2 meters
     • Launch Mass: 25 kg
     • Warhead: 2-3 kg
     • Endurance: 2.5 hours
     • Operational Range: 50 km data link
     • Target Engagement: Image-based terminal guidance enables precise strikes on static or moving targets.
   • Medium Loitering Munition:
     • Length: 2.4 meters
     • Wingspan: 2.9 meters
     • Launch Mass: 150 kg
     • Warhead: 25 kg
     • Endurance: Exceeding 10 hours
     • Advanced Target Recognition: An AI-based system enhances strike accuracy and increases operational scope.

Future Developments

Korean Air continues to expand its unmanned systems capabilities. The company has plans for additional variants, including the next iteration of the LOWUS, which aims to incorporate an afterburner and offer carrier compatibility. The KUS-VS, inspired by the Aerovironment Jump 20, is under development with enhanced specifications for an elevated operational threshold.

By investing in sophisticated unmanned technologies, Korean Air is positioning itself as a formidable player in the global defense market, aiming to meet evolving military needs with innovative solutions.