KAI NI-500VT concept model displayed at ADEX 2021. (Dae Young Kim)
South Korean aerospace companies are positioning to meet a potential Republic of Korea Army (RoKA) requirement for a next-generation, division-level reconnaissance and target acquisition unmanned aerial vehicle (UAV).
Officials from Korea Aerospace Industries (KAI) and Korean Air (KAL) told Janes at the Seoul International Aerospace & Defense Exhibition 2021 (ADEX 2021), held from 19 to 23 October, that RoKA desires a vertical take-off and landing (VTOL) capability along with high-speed level flight performance.
KAI exhibited a model of a tiltrotor reconnaissance UAV known as the Night Intruder 500 Vectored Thrust (NI-500VT), which has a maximum take-off weight of 450 kg and is 4 m long and 4.3 m wide. According to the company, the air vehicle features a hybrid-electric propulsion system that enables it to carry a 40 kg payload and stay aloft for up to five hours. A KAI official told Janes that the wing can be disassembled for road transportation.
Meanwhile, KAL introduced the KUS-VS, a fixed-wing UAV that is an upgraded version of the incumbent KUS-FT in RoKA service. However, the KUS-VS features new vertical lift units on the wings to enable VTOL manoeuvres, and transitions into conventional level flight with its rear-mounted pusher propeller once cruising altitude has been attained.
The stated maximum speed of the KUS-VS is over 160 km/h although the air vehicle usually cruises at speeds of around 120 km/h at altitudes of more than 14,763 ft (4,500 m). Endurance is claimed to be in excess of five hours, depending on its payload, out to an operational radius of 80 km.
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