Beyond Aero's BYA‑1 swaps electric ducted fans for pusher propfans as PDR completes
French developer Beyond Aero has replaced the electric ducted fans on its BYA‑1 hydrogen fuel‑cell business aircraft with pusher‑configured propfans, a design change confirmed by the programme's completed preliminary design review. The update represents a substantive propulsion‑architecture shift ahead of further maturity milestones.