Patent ID: 10579074

Abstract:
Various embodiments of a propeller-enclosed airlifting air tube apparatus are disclosed. The propeller-enclosed airlifting air tube apparatus contains a unique multi air-tube structure that functions as a plurality of air outtakes to produce stable lift force with one or more propellers enclosed in the apparatus. By encapsulating the propellers within the outer shells, the airlifting air tube apparatus is able to reduce potential bodily harm and property damage risks during a flight operation in a densely-populated environment or in another environment involving tight spaces. Preferably, the airlifting air tube apparatus encapsulates one or more pairs of contra-rotating propellers inside a drone casing to enhance operational safety while minimizing the overall footprint of the apparatus. Furthermore, the airlifting air tube apparatus incorporates a novel flight control steering unit configured to change directions and altitudes of the apparatus by dynamically adjusting airflow to each outtake air tube.