Wipers work well, with minimal complexity. Many airliners already use heated window panes for de-icing. Heated windows don't work all that great in a downpour,

Wipers work well, with minimal complexity. Many airliners already use heated window panes for de-icing. Heated windows don't work all that great in a downpour, and wiping is a simple and faster acting alternative. Blasted air is used minimally for windscreens, but it's a common plane de-icing method for the rest of the vehicle. The complexity and weight of using spinning windows on planes makes that idea a non-starter. hydrophobic coatings are also in use, but are generally avoided for the duty of primary windscreens due to most hydrophobic coatings lacking durability to physical stress and contact.