US 11,679,863 B2
Aircraft propeller and aircraft
Christos Pashias, Weissach (DE)
Assigned to DR. ING. H.C. F. PORSCHE AKTIENGESELLSCHAFT, Stuttgart (DE)
Filed by Dr. Ing. h.c. F. Porsche Aktiengesellschaft, Stuttgart (DE)
Filed on Apr. 21, 2022, as Appl. No. 17/725,568.
Claims priority of application No. 10 2021 110 538.2 (DE), filed on Apr. 26, 2021.
Prior Publication US 2022/0340258 A1, Oct. 27, 2022
Int. Cl. B64C 11/24 (2006.01)
CPC B64C 11/24 (2013.01) 13 Claims
OG exemplary drawing
 
1. An aircraft propeller, comprising:
a propeller shaft; and
propeller blades or propeller airfoils secured on the propeller shaft,
wherein each of the propeller blades or each of the propeller airfoils has an inlet-side flow channel and an outlet-side flow channel, wherein each inlet-side flow channel has an inlet opening and each outlet-side flow channel has an outlet opening on each of the propeller blades or the propeller airfoils,
wherein each inlet-side flow channel is connected to the outlet-side flow channel of a respective other propeller blade or a respective other propeller airfoil via a respective connection such that air flowing in via the inlet-side flow channel flows out via the outlet-side flow channel of the respective other propeller blade or the respective other propeller airfoil, and
wherein the inlet opening and the outlet opening of each propeller blade of the propeller blades or each propeller airfoil of the propeller airfoils are arranged on different sides of the respective propeller blade or the respective propeller airfoil.
 
10. An aircraft propeller, comprising:
a propeller shaft; and
propeller blades or propeller airfoils secured on the propeller shaft,
wherein each of the propeller blades or each of the propeller airfoils has a respective inlet-side flow channel, which has an inlet opening, and has a respective outlet-side flow channel, which has an outlet opening
wherein each inlet-side flow channel is connected to the outlet-side flow channel of a same propeller blade or propeller airfoil via a connection such that air flowing in via the inlet-side flow channel flows out via the outlet-side flow channel of the same propeller blade or propeller airfoil,
wherein each connection extends in a U shape adjacent to the propeller shaft,
wherein the inlet opening and the outlet opening of each propeller blade of the propeller blades or each propeller airfoil of the propeller airfoils are formed on different sides of the respective propeller blade or the respective propeller airfoil,
wherein the inlet opening and the outlet opening of each of the propeller blades or each of the propeller airfoils is arranged at a greater distance from the propeller shaft than the connection of the respective inlet-side flow channel of the respective propeller blade or propeller airfoil, and
wherein, for each of the propeller blades or the propeller airfoils, the inlet opening and the outlet opening of the respective propeller blade or the respective propeller airfoil are arranged at different distances from the propeller shaft such that no portion of the inlet opening is at a same distance from the respective propeller shaft as any portion of the outlet opening of the respective propeller blade or the respective propeller airfoil, and the distance of the inlet opening of the respective propeller blade or the respective propeller airfoil from the propeller shaft is greater than the distance of the outlet opening of the respective propeller blade or the respective propeller airfoil from the propeller shaft.