# Recent Content by Catatau

1. Post

### How does the angle of the bow of a boat affects its coefficient of drag? PLEASE HELP

Wait, so to find the friction from the WSA it is what I did before but I have to add that to the from drag which is equal to = 1/2 x 1000 x...
Post by: Catatau, Nov 12, 2012 in forum: Hydrodynamics and Aerodynamics
2. Post

### How does the angle of the bow of a boat affects its coefficient of drag? PLEASE HELP

Could you say what these sources are? I need to reference my work. So the drag coefficient would be 1.55 for all models? The drag that the...
Post by: Catatau, Nov 12, 2012 in forum: Hydrodynamics and Aerodynamics
3. Post

### How does the angle of the bow of a boat affects its coefficient of drag? PLEASE HELP

somewhere in the middle with neutral buyoancy
Post by: Catatau, Nov 12, 2012 in forum: Hydrodynamics and Aerodynamics
4. Post

### How does the angle of the bow of a boat affects its coefficient of drag? PLEASE HELP

between 2 and 2.5 meters
Post by: Catatau, Nov 12, 2012 in forum: Hydrodynamics and Aerodynamics
5. Post

### How does the angle of the bow of a boat affects its coefficient of drag? PLEASE HELP

Ok so for the speed: I posted a diagram before of how the experiment was set up here it is again,[ATTACH], so the second pulley had a sensor in it...
Post by: Catatau, Nov 12, 2012 in forum: Hydrodynamics and Aerodynamics
6. Post

### How does the angle of the bow of a boat affects its coefficient of drag? PLEASE HELP

I agree with the top and bottom part being 1315.4 cm^2 but not the sides being 684cm^2. The side is made of three sides of the rectangle (20x3.9 +...
Post by: Catatau, Nov 12, 2012 in forum: Hydrodynamics and Aerodynamics
7. Post

### How does the angle of the bow of a boat affects its coefficient of drag? PLEASE HELP

WSA would be the surface area of the whole model right? If it is than my calculation with 3.9cm as depth are correct.
Post by: Catatau, Nov 12, 2012 in forum: Hydrodynamics and Aerodynamics
8. Post

### How does the angle of the bow of a boat affects its coefficient of drag? PLEASE HELP

Yeah I forgot to type the 1/2 bit but I did do it. Ok so I got for the 120 degree boat with a 96.6g mass pulling it: average velocity = 1.45m/s,...
Post by: Catatau, Nov 12, 2012 in forum: Hydrodynamics and Aerodynamics
9. Post

### How does the angle of the bow of a boat affects its coefficient of drag? PLEASE HELP

Ok, that helps. It wasn't deep under water. The first three boats (120, 100, 80) were always submerged but close to the surface, however the other...
Post by: Catatau, Nov 12, 2012 in forum: Hydrodynamics and Aerodynamics
10. Post

### How does the angle of the bow of a boat affects its coefficient of drag? PLEASE HELP

Haha ok, so I calculated wave drag like Ad Hoc suggested and plotted the waved drag against total drag (equal to weight pulling boat forward) for...
Post by: Catatau, Nov 12, 2012 in forum: Hydrodynamics and Aerodynamics
11. Post

### How does the angle of the bow of a boat affects its coefficient of drag? PLEASE HELP

When I said under water a literally mean that the whole boat was submerged, like a submarine. For the boats with the smaller angle being pulled by...
Post by: Catatau, Nov 12, 2012 in forum: Hydrodynamics and Aerodynamics
12. Post

### How does the angle of the bow of a boat affects its coefficient of drag? PLEASE HELP

Thank you for your suggestions. I will not have time to test the friction of the pulley but it is certainly something that I am going to mention...
Post by: Catatau, Nov 12, 2012 in forum: Hydrodynamics and Aerodynamics
13. Post

### How does the angle of the bow of a boat affects its coefficient of drag? PLEASE HELP

Ad Hoc, first of all thank you for your time and input. Yes what I want to do is investigate the angle of entrance with total resistance. With...
Post by: Catatau, Nov 12, 2012 in forum: Hydrodynamics and Aerodynamics
14. Post

### How does the angle of the bow of a boat affects its coefficient of drag? PLEASE HELP

Thank you seadreamer6, Gonzo and David for all your compliments and the help you have given me this far. So first, David, I did what you told me...
Post by: Catatau, Nov 11, 2012 in forum: Hydrodynamics and Aerodynamics
15. Post

### How does the angle of the bow of a boat affects its coefficient of drag? PLEASE HELP

Ok so I am attaching a diagram of my experiment to show exactly how I did it. I used three different masses for each boat (96.6g, 196.7g and...
Post by: Catatau, Nov 11, 2012 in forum: Hydrodynamics and Aerodynamics