[PSUBS-MAILIST] SeaQuestor cb/cg and vertical thrusters

[Alan via Personal_Submersibles]

David,
looking at your design from the top, it is slightly dart shaped, so you 
have more area at the back half than front half. 
My thoughts are that the back half having more area will have more resistance
as you try & push it up / down through the water.
You could make a small flat cardboard cut out of the plan view of your sub &
push it down in the water with a stick to find the best point along it that causes
it to descend evenly. 
But then you may like a slightly nose down or nose up ascent, descent.
I see you have right & left hand props in your diagram; well done!
Alan 

> On 9/06/2020, at 4:40 PM, David Colombo via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> Hi guys, getting ready to cut my wings for the vertical thruster plscement. In my design I have them placed at the cb/cg lateral line. Based on my wing design, they have about a 15 degree pitch off of vertical. Here it's my question for those who have vertical thrusters.  How important is the location relative to the lateral cb/ch line. With a variable internal trim tank system that can adjust the forward / aft cb/cg line. Pictures attached. I thought i would ask for feedback before i cut the foam.
> David
> <Image6905011355835530274.jpg>
> <Image9154131867660330939.jpg>
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