Invention Grant
- Patent Title: Acoustic noise suppressing ducted fan propulsor mounting arrangement and treatments
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Application No.: US17047779Application Date: 2019-04-16
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Publication No.: US11767097B2Publication Date: 2023-09-26
- Inventor: Ronald Martin Barrett , Lauren Nicole Schumacher , Patrick Ian McNamee , John Austin Haug , Joshua Donald Mudd , Dalton Bastiaan Prins , Nicholas Donald Werner
- Applicant: University of Kansas
- Applicant Address: US KS Lawrence
- Assignee: University of Kansas
- Current Assignee: University of Kansas
- Current Assignee Address: US KS Lawrence
- Agency: Norton Rose Fulbright US LLP
- International Application: PCT/IB2019/053149 2019.04.16
- International Announcement: WO2019/202515A 2019.10.24
- Date entered country: 2020-10-15
- Main IPC: B64C11/00
- IPC: B64C11/00 ; B64C27/20 ; B64C33/00 ; F01D25/04

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.
Public/Granted literature
- US20210107623A1 ACOUSTIC NOISE SUPPRESSING DUCTED FAN PROPULSOR MOUNTING ARRANGEMENT AND TREATMENTS Public/Granted day:2021-04-15
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