AIRCRAFT PROGRAM
| Lift type | Fixed wing | ||
| Construction type | Factory-built | ||
| Control type | Autonomous | ||
| Engine type | Piston, Electric, Hybrid | ||
| Application | |||
| Search for other aircraft programs with these properties on the Aircraft Programs directory page. | |||
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S2 class VTOL UAS with twin-boom design and inverted V-tail, uses 8 brushless electric motors for take off / landing and piston engine for forward flight.
| Variant | Launch/First flight | Production end | |
| Callen-Lenz Koios | 2019 / | ISR UAV with 4 metre wingspan. |
See recent updates (latest 19/05/2026)
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