JPH0364899U

JPH0364899U -

Info

Publication number: JPH0364899U
Application number: JP12722689U
Authority: JP
Priority date: 1989-10-31
Filing date: 1989-10-31
Publication date: 1991-06-25

Description

[Brief explanation of drawings]

第１〜５図は本考案の一実施例としてのプロペ
ラに関するもので、第１図はそのプロペラ翼の断
面図、第２図はそのプロペラ翼の翼前縁からのそ
りの最大値までの距離Ｃ′と翼弦長Ｃとの比Ｃ′
／Ｃと、プロペラ中心からの距離ｒとのプロペラ
半径Ｒとの比ｒ／Ｒとの関係を示したグラフ、第
３図はそのプロペラ翼の翼前縁から翼厚の最大値
までの距離Ｂと翼弦長Ｃとの比Ｂ／Ｃと、プロペ
ラ中心からの距離ｒとプロペラ半径Ｒとの比ｒ／
Ｒとの関係を示したグラフ、第４図はそのプロペ
ラ翼の翼前縁からそりの最大値までの距離Ｃ′と
翼弦長Ｃとの比Ｃ′／Ｃと、変動圧力との関係を
示したグラフ、第５図はそのプロペラ翼の翼負圧
面における圧力分布を示したグラフであり、第６
図は従来のプロペラ翼における翼負圧面の圧力分
布図である。１…プロペラ翼、１ａ…翼前縁、１ｂ…翼後縁
、２…翼弦線、３…骨格線、Ｂ…翼厚の最大値の
翼前縁からの距離、Ｃ…翼弦長、Ｃ′…そりの最
大値の位置の翼前縁からの距離、ｄ…翼厚、ｆ…
そり、Ｒ…プロペラ半径。 Figures 1 to 5 relate to a propeller as an embodiment of the present invention. Figure 1 is a sectional view of the propeller blade, and Figure 2 is the distance from the leading edge of the propeller blade to the maximum value of warpage. Ratio C' between C' and chord length C
/C and the ratio r/R of the propeller radius R to the distance r from the propeller center. Figure 3 shows the distance B from the leading edge of the propeller blade to the maximum blade thickness. and the ratio B/C of the chord length C, and the ratio r/ of the distance r from the propeller center to the propeller radius R.
Figure 4 shows the relationship between the ratio C'/C between the distance C' from the leading edge of the propeller blade to the maximum value of warpage and the chord length C, and the fluctuating pressure. The graph shown in Figure 5 is a graph showing the pressure distribution on the suction surface of the propeller blade.
The figure is a pressure distribution diagram on the suction surface of a conventional propeller blade. 1...Propeller blade, 1a...Blade leading edge, 1b...Blade trailing edge, 2...Blade chord line, 3...Skeletal line, B...Distance of maximum blade thickness from the blade leading edge, C...Blade chord length, C ′...Distance from the blade leading edge to the position of maximum warpage, d...Blade thickness, f...
Sled, R...propeller radius.

Claims

[Scope of utility model registration request]

In a propeller, the distance C' from the leading edge of the blade at the position of the maximum warp and the blade chord of the propeller blade of the same propeller are measured by the distance C' from the leading edge of the blade at the position of the maximum warpage, with respect to a cross section of the propeller blade taken along a cylindrical surface with the propeller axis center line as the rotation axis. The distribution curve of the propeller blade in the radial direction of the ratio C'/C to the length C is 0.7 when the radius of the propeller is R.
The propeller blade has a convex shape with a maximum value of 5R to 0.85R, and has a ratio B/C of the distance B from the leading edge of the blade at the position of the maximum blade thickness to the chord length C in the radial direction of the propeller blade. A propeller characterized in that the distribution curve is formed in a convex shape having a maximum value between 0.45R and 0.55R, where R is the radius of the propeller.