Concentric vertical ducted propulsion for aerial vehicles

An aerial vehicle comprising:

• a first duct defining at least a first portion of an air pathway;
• a second duct defining at least a second portion of the air pathway, the second duct being disposed below and collinearly aligned with the first duct;
• a plurality of links extending between the first duct and the second duct;
• one or more propulsion devices arranged within the second duct to pull air through at least an air intake gap defined between the first duct and the second duct;
• and
• one or more movable navigation members coupled to the second duct for controlling movement of the aerial vehicle.

A method of controlling movement of an aerial vehicle, the method comprising:

• generating at least a first portion of a lift force for the aerial vehicle by rotating a first propeller disposed within a first vertical duct;
• generating at least a second portion of the lift force by rotating a second propeller disposed within a second vertical duct, the second vertical duct disposed below and coaxially aligned with the first vertical duct;
• disposing one or more hinged duct couplers extending between the first duct and the second duct;
• and
• causing a change to an air flow through an air pathway defined by the first vertical duct coaxially aligned with the second vertical duct, the change to the air flow caused by moving one or more flaps disposed at the second vertical duct.