Marine Propeller Optimization Based on a Novel Parametric Model

Table 1

Parameters’ definition.

Nr.	Name	Symbol	Dimensionless	In the equations (9)
0	Chord length	L	Free ⟶ 1
1	Upper-side front edge shift length	u_in_shift	(0, L) ⟶ [0, 1]	P1
2	Upper-side front edge in angle	u_in_angle	[0, π] ⟶ [0, 1]	P2
3	Upper-side trailing edge shift length	u_out_shift	(0, L) ⟶ [0, 1]	P3
4	Upper-side trailing edge out angle	u_out_angle	[0, π/2] ⟶ [0, 1]	P4
5	Lower-side front edge shift length	l_in_shift	(0, L) ⟶ [0, 1]	P5
6	Lower-side front edge in angle	l_in_angle	[−π, π/2] ⟶ [0, 1]	P6
7	Lower-side trailing edge shift length	l_out_shift	(0, L) ⟶ [0, 1]	P7
8	Lower-side trailing edge out angle	l_out_angle	[−π, π/2] ⟶ [0, 1]	P8