公开(公告)号：US20190135410A1

公开(公告)日：2019-05-09

申请号：US15803961

申请日：2017-11-06

Applicant: Massachusetts Institute of Technology

Inventor： Thomas Sebastian ,  Christopher Strem

IPC: B64C11/00 ,  F01D5/14 ,  F01D5/16 ,  B64C11/18 ,  B64C11/20

CPC classification number: B64C11/008 ,  B64C11/02 ,  B64C11/18 ,  B64C11/20 ,  B64C39/024 ,  B64C2201/108 ,  B64C2201/162 ,  F01D5/141 ,  F01D5/147 ,  F01D5/16 ,  F05D2240/307

Abstract: Toroidal propeller. The propeller includes a hub supporting a plurality of elongate propeller elements in which a tip of a leading propeller element curves into contact with a trailing propeller element to form a closed structure with increased stiffness and reduced acoustic signature.

公开(公告)号：US10407156B2

公开(公告)日：2019-09-10

申请号：US15803961

申请日：2017-11-06

Applicant: Massachusetts Institute of Technology

Inventor： Thomas Sebastian ,  Christopher Strem

IPC: B64C11/18 ,  B64C11/00 ,  F01D5/14 ,  F01D5/16 ,  B64C11/20 ,  B64C11/02 ,  B64C39/02

Abstract: The propeller includes a hub supporting a plurality of elongate propeller elements in which a tip of a leading propeller element curves into contact with a trailing propeller element to form a closed structure with increased stiffness and reduced acoustic signature.