Direction and lift control for hovercraft PATENT
https://patents.google.com/patent/US5096012A/en
US5096012A - Direction and lift control for hovercraft - Google Patents
A hovercraft includes a hull having a plurality of diffusion apertures and air skirt for providing a supporting air cushion. An engine drives a propeller which produces an airflow. A movable elevator dynamically divides the propeller airflow between lift and thrust components. A pair of rudder..
https://patents.google.com/patent/US5096012A/en