Title:
VARIABLE-PITCH PROPELLER HAVING OPTIMAL HUB-TO-TIP DIAMETER RATIO
Document Type and Number:
WIPO Patent Application WO/2021/235790
Kind Code:
A1
Abstract:
The present invention relates to a variable-pitch propeller capable of changing a blade pitch according to the sailing conditions of a ship and, specifically, to a variable-pitch propeller having an optimal hub-to-tip diameter ratio, the propeller being capable of reducing the size of a hub so as to have a high efficiency that is close to the propulsion efficiency of a fixed pitch propeller (FPP). In order to accomplish the aforementioned objective, the present invention relates to a variable-pitch propeller which comprises a hub mounted at the propelling shaft of a ship, and a blade that is mounted at the circumference of the hub and that has a variable pitch, and which is technically characterized by a H/D ratio, of diameter (H) of the propeller and diameter (D) of the hub, of 0.170-0.2.
More Like This:
Inventors:
KIM JAE BOO (KR)
CHOI CHAN KYU (KR)
KIM SUNG HOON (KR)
MOON KIL HWAN (KR)
KIM DO WAN (KR)
SON GWAN HEE (KR)
CHOI CHAN KYU (KR)
KIM SUNG HOON (KR)
MOON KIL HWAN (KR)
KIM DO WAN (KR)
SON GWAN HEE (KR)
Application Number:
PCT/KR2021/006123
Publication Date:
November 25, 2021
Filing Date:
May 17, 2021
Export Citation:
Assignee:
KOREA SHIPBUILDING & OFFSHORE ENG CO LTD (KR)
HYUN DAI HEAVY IND CO LTD (KR)
HYUN DAI HEAVY IND CO LTD (KR)
International Classes:
B63H3/08; B63H1/20; B63H3/00
Foreign References:
| KR20080099253A | 2008-11-12 | |||
| KR20010040686A | 2001-05-15 | |||
| KR101501903B1 | 2015-03-12 | |||
| KR20120116098A | 2012-10-22 | |||
| US5405243A | 1995-04-11 | |||
| JP2020015347A | 2020-01-30 | |||
| JP2017190020A | 2017-10-19 | |||
| KR20160116224A | 2016-10-07 |
Attorney, Agent or Firm:
KIM, Sun-young (KR)
Download PDF: