US 12,071,931 B2
Universal propeller, operating method and favoured use
Siva RaghuRam Prasad Chennupati, Unterschleissheim (DE)
Appl. No. 18/006,598
Filed by Siva RaghuRam Prasad Chennupati, Unterschleissheim (DE)
PCT Filed Jul. 27, 2020, PCT No. PCT/DE2020/100671
§ 371(c)(1), (2) Date Jan. 24, 2023,
PCT Pub. No. WO2021/018353, PCT Pub. Date Feb. 4, 2021.
Prior Publication US 2023/0287864 A1, Sep. 14, 2023
Int. Cl. F03D 3/06 (2006.01); B63H 1/08 (2006.01); B64C 11/32 (2006.01); F03D 3/00 (2006.01); F03D 3/02 (2006.01)
CPC F03D 3/068 (2013.01) [B63H 1/08 (2013.01); B64C 11/32 (2013.01); F03D 3/005 (2013.01); F03D 3/02 (2013.01); F05B 2240/213 (2013.01); F05B 2250/232 (2013.01); F05B 2260/5032 (2013.01); F05B 2260/75 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A universal propeller, comprising:
a hub rotatably mounted on a shaft, said shaft having a central axis;
a plurality of rotor blades mounted to said hub, said rotor blades being: two rotor blades arranged opposite one another, or at least three rotor blades arranged in a star configuration with respect to one another;
each of said rotor blades on said hub being arranged, at an end of a longitudinal axis thereof, at an angle α with respect to said central axis of said shaft such that the longitudinal axis of each rotor blade, when rotating through 360°, describes a peripheral surface of a right circular cone;
said hub having a timing gear enabling said rotor blades to be rotated about the longitudinal axes of said rotor blades, said timing gear having a reference gearwheel;
each of said rotor blades carrying a gearwheel that is directly operatively connected to said reference gearwheel of said timing gear;
said timing gear being operatively connected to a hub gear that is configured to sense and process an angular velocity ωn of a rotational movement of said hub; and
wherein said reference gearwheel is arranged centrally in said timing gear and surrounded by said gearwheels of said the rotor blades, and said reference gearwheel and said gearwheels of said rotor blades are configured to define a ratio of the angular velocity ωr of said reference gearwheel to the angular velocity ωn of the rotational movement of said hub that is: ωr/ωn=1+(½)*(Srot/Sr); or
wherein said reference gearwheel is arranged outside a center of said timing gear and surrounds said gearwheels of said rotor blades, and said reference gearwheel and said gearwheels of said rotor blades are configured to define a ratio of the angular velocity ωr of said reference gearwheel to the angular velocity ωn of the rotational movement of said hub that is: ωr/ωn=1−(½)*(Srot/Sr);
wherein Srot is a size of said gearwheels of said rotor blades and Sr is a size of said reference gearwheel.