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1. (WO2018086663) A FOLDING PROPELLER WITH A DEFINED RAKE

Pub. No.:    WO/2018/086663    International Application No.:    PCT/DK2016/050365
Publication Date: Fri May 18 01:59:59 CEST 2018 International Filing Date: Tue Nov 15 00:59:59 CET 2016
IPC: B63H 1/24
B64C 11/28
Applicants: BSI A/S
Inventors: OLSEN, Steen Christian
Title: A FOLDING PROPELLER WITH A DEFINED RAKE
Abstract:
A folding propeller (1) with an adjustable rake angle has a hub (10) and at least three propeller blades (11) which are pivotally mounted in the hub (10) about pivot axes (25a) extending radially outwards from a central area in the hub (10), for the propeller blades (11) to unfolded and fold between radially protruding operating positions, and are rearwardly extending passive position with respective rear edges of the propeller blades facing each other. The propeller blades (11) are adapted to pass each other in said passive position to be movable to both sides from the passive position to an operating position. An abutment (30) is defining in forward propulsion the rake angle of the propeller blades (11).