John A Haug

US Patent:

20210107623, Apr 15, 2021

Filed:

Apr 16, 2019

Appl. No.:

17/047779

Inventors:

- Lawrence KS, US
Lauren Nicole Schumacher - Rolla MO, US
Patrick Ian McNamee - Topeka KS, US
John Austin Haug - Austin TX, US
Joshua Donald Mudd - Port St. Lucie FL, US
Dalton Bastiaan Prins - Clovis CA, US
Nicholas Donald Werner - Overland Park KS, US

International Classification:

B64C 11/00
B64C 27/20
B64C 33/00
F01D 25/04

Abstract:

A general mounting method for ducted fan propulsors is disclosed. This mounting method uses extremely slender stators that connect the duct ring to the propulsor which is mounted in the middle and drives the rotor, fan or propeller. The slender stators take the form of spokes and as such are so slender that the midspan stresses within the spokes are dominated by axial tension loads rather than the shear loads experienced by conventional stators. The spokes may have an aerodynamic shape and damping methods may be used to retard spoke vibrations and transmission of engine vibrations to the duct and force. The duct itself is also stiffened by the spoke arrangement, thereby reducing low frequency vibration modes.