Procrastinatus

Why talk about it now?

ROV Thruster Testing

Posted by aonomus on January 13, 2011

So another ROV update, I did some tests of bilge pump motors as thrusters and got some interesting results

 

Results

Model Direction Voltage (V) Current (I) Power (w) Thrust (lb) W/lb
1000gph w/ propeller Forward 12.5 7A 87.5 1.25-1.5 58-70
Reverse 12.5 7.5 93.75 1-1.25 75-93.75
500gph w/ propeller Forward 13.0 5.0 65.0 0.5 130
Reverse 13.0 4.5 58.5 0.75 78

These are some strange results that I need to reconcile before carrying forward, particularly the odd thrust value of the 500gph motor in forward.

Future plans involve testing nozzle shapes such as straight nozzles, nozzles with collimating fins (to reduce turbulent flow or increase laminar flow), and Kort rings. Anyone with expertise in this area feel free to chime in with comments.

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

 
%d bloggers like this: