US 12,263,952 B2
Augmentable air injected plenum propulsion drive for electric VTOL operation and flight
George Fitzgerald Washington, Blythewood, SC (US)
Filed by George Fitzgerald Washington, Blythewood, SC (US)
Filed on Jun. 4, 2023, as Appl. No. 18/328,755.
Prior Publication US 2024/0400211 A1, Dec. 5, 2024
Int. Cl. B64U 10/20 (2023.01); B64D 27/24 (2006.01); B64C 29/00 (2006.01)
CPC B64D 27/24 (2013.01) [B64U 10/20 (2023.01); B64C 29/0008 (2013.01); B64C 29/0066 (2013.01)] 2 Claims
OG exemplary drawing
 
1. A method of operating an electric vertical takeoff and landing (VTOL) engine, the VTOL comprising:
a plenum chamber designed to be pressurized, the plenum chamber being a symmetrical elongated polygon;
two parallel cylindrical ducts passing through the plenum chamber such that the cylindrical ducts extend on both sides of the plenum chamber beyond the plenum chamber, the cylindrical ducts having a circular cross-section, and a diameter of the cylindrical ducts being smaller than a height of the plenum chamber, the cylindrical ducts being detachable from the plenum chamber;
a slit opening compression vent on each one of the cylindrical ducts that opens inside the plenum chamber, the slit opening compression vents having rotatable thrust tube sheaths capable of opening and closing the slit opening compression vents;
a bidirectional electric ducted fan injector installed on the front end and on the rear end of each cylindrical duct opposite of each other, the electric ducted fan injectors capable of rotation in clockwise and counter-clockwise directions;
a ventral tube portion fluidly connected to the plenum chamber in a direction vertical to the two cylindrical ducts;
a ventral thrust electric ducted fan installed on the end of the ventral tube portion opposite of the plenum chamber;
the method comprising takeoff and landing mode, and switching between takeoff and landing and forward cruise flight,
the takeoff and landing mode comprising:
opening the plenum chamber slit opening compression vents to pressurize the plenum chamber;
rotating the electric ducted fan injectors in opposite directions such that they both blow air toward the plenum chamber;
rotating the ventral thrust electric ducted fan such that it blows air from the plenum chamber to outside of the plenum chamber until the VTOL takes off to a desired elevation;
the switching between takeoff and landing and forward cruise flight comprising;
reversing the rotational direction of the rear end electric ducted fan injectors such that they both blow air to the outside of the cylindrical ducts;
closing the slit opening compression vents;
turning off the ventral thrust electric ducted fan.