JPS58100899U

JPS58100899U - tunnel fin

Info

Publication number: JPS58100899U
Application number: JP19482581U
Authority: JP
Inventors: 勉池田
Original assignee: Mitsubishi Heavy Industries Ltd
Current assignee: Mitsubishi Heavy Industries Ltd
Priority date: 1981-12-29
Filing date: 1981-12-29
Publication date: 1983-07-08

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来のトンネルフィンを設置した船尾部の側面
図、第２図は第１図の■−■矢視図、第３図は本考案の
一実施例としてのトンネルフィンを設置した船尾部の側
面図、第４図は第３図の■−■矢視図、第５図は第４図
の■−■矢視図、第６図は第１図のプロペラ位置の流場
分布図、第７図は第３図のプロペラ位置の流場分布図で
ある。１・・・船体、５・・・プロペラ、６・・・トンネルフ
ィン、８ａ・・・第２のブレード、８ｂ・・・第１のブ
レード。Figure 1 is a side view of the stern with conventional tunnel fins installed, Figure 2 is a view from the ■-■ arrow in Figure 1, and Figure 3 is the stern with tunnel fins installed as an embodiment of the present invention. Figure 4 is a view from the ■-■ arrow in Figure 3, Figure 5 is a view from the ■-■ arrow in Figure 4, and Figure 6 is a flow field distribution diagram at the propeller position in Figure 1. , FIG. 7 is a flow field distribution diagram at the propeller position of FIG. 3. DESCRIPTION OF SYMBOLS 1... Hull, 5... Propeller, 6... Tunnel fin, 8a... Second blade, 8b... First blade.

Claims

[Scope of utility model registration request]

A tunnel fin that covers the upper part of the stern propeller in a tunnel shape and extends on both port and starboard sides toward the bow, has a first blade that is vertically installed on the lower surface of the fin on the hull side, and a first blade that is vertically installed on the lower surface of the fin that is opposite to the hull. A second blade is provided, and both blades have an airfoil-shaped horizontal cross section, and the first blade is convex toward the hull, and the second blade is convex toward the opposite side of the hull. A tunnel fin characterized by being formed.