Abstract: An embodiment of the invention provides a method where retractable ducts or shrouds are extended over propeller(s) that are fixed in wing channels on an aircraft during takeoff and landing to increase flight safety and efficiency. Fully extending the duct or shroud during takeoff increases lift and upward thrust, while retracting the duct or shroud and stowing the duct or shroud inside of the wing during forward cruise decreases aircraft drag and increases lift. Duct or shroud extension during takeoff also enables critical safety and noise cancellation functionality. The method provided for safe and efficient takeoff can be applied in reverse order for safe and efficient landing.

Abstract: An embodiment ofthe invention provides a method where retractable ducts or shrouds are extended over propeller(s) that are fixed in wing channels on an aircraft during takeoff and landing to increase flight safety and efficiency. Fully extending the duct or shroud during takeoff increases lift and upward thrust, while retracting the duct or shroud and stowing the duct or shroud inside of the wing during forward cruise decreases aircraft drag and increases lift. Duct or shroud extension during takeoff also enables critical safety and noise cancellation functionality. The method provided for safe and efficient takeoff can be applied in reverse order for safe and efficient landing.