Plastic Strips Lower Aircraft Stall Speeds

Researchers at Princeton University have developed 'covert flaps,' flexible plastic strips inspired by birds' covert feathers, to enhance aircraft performance at low speeds. These flaps, tested in wind tunnels and on RC aircraft, increase lift by up to 15% and reduce drag by 13% by managing airflow over the wings. This innovation could improve safety and efficiency during critical flight phases like takeoff and landing, drawing parallels to existing technologies like leading-edge slats on STOL aircraft.