Blackdiamond fins - Fin-theory

Fin-theory

1	What an ambitious sailor should know about fins.
2	1. The elements of fin function
3	2. Hydrodynamic terms
4	2.1 Flow
5	2.2 Streamlines
6	2.3 Fin profile
7	2.4 Rake angle
8	2.5 Fin torsion
9	2.6 Drift
10	2.7 Lift
11	3. The flow situation around the fin - the lift
12	3.1 Flow situation without drift and without lift
13	3.2 The flow situation including lift
14	4. The resistance of the fin
15	4.1 Form resistance
16	4.1.1 Important geometric factors
17	4.1.1.1 Thickness/chord ratio
18	4.1.1.2 Thickness distribution
19	4.1.1.3 Profile camber
20	4.1.1.4 Leading edge
21	4.1.1.5 Trailing edge
22	4.1.2 Other important factors
23	4.2 Frictional resistance
24	4.3 Induced resistance
25	4.3.1 The outline of the fin
26	4.3.1.1 Aspect ratio, length and area of the fin
27	4.3.1.2 Taper ratio
28	4.3.1.3 Length and curvature of the leading edge
29	4.3.1.4 Rake angle
30	4.3.2 Torsion
31	4.3.3 Camber distribution
32	5. Construction
33	5.1 Milled fins
34	5.2 Moulded fins
35	6. Fin design
36	6.1 Formula-fins
37	6.2 Wave-fins
38	6.3 Freestyle-fins
39	6.4 Slalom-fins
40	6.5 Free-ride fins (Convertibles, Wave-slalom)
41	6.6 Speed-fins
42	6.7 Sea-weed fins
43	7. Spin-out
44	8. The base of the fin