propeller for submersible

Could anyone assist me with a project i have undertaken. I need to design a propeller for a diver propulsion vehicle. I have certain constraints on this system:

thrust must be at least 10kg
diameter restricted to at least 400mm
propeller operates at 200 rpm
torque available from motor is 10.N.m
length of system is 2metres and diameter is 0.4 metres.

thanks
Andy

[Stephen Ditmore]

Perhaps there's something helpful here:
http://scilib.ucsd.edu/sio/indexes/subbibl.html

Here's some good prop software:
www.hydrocompinc.com

I'd think much general boat prop literature would apply, such as:
www.marineengine.com/books/p1.html

Good Luck!

[Stephen Ditmore]

At the Virginia Tech Human Powered Submarine Team web site, www.hps.vt.edu, I found this:

Propulsion
Speed will be the focus of the propulsion crew this year. In 2001, the team experimented with a counter-rotating propulsion system, and was very pleased with its performance. The torque placed on the hull by a single propeller was eliminated, even with a gear ratio of 4:1. This year that success will be incorporated into the most advanced propulsion system ever designed by any HPS team: a computer-controlled, counter-rotating, variable-pitch propeller system. This system will use the advantages of a counter-rotating system, but will continuously vary the pitch of the blades to increase thrust for greater acceleration and higher top speeds. Research is also being done on a linear drive system for future submarines. This system will allow the pilot to provide power using a more efficient stair-stepping motion instead of a cyclic pedaling motion. If it performs well, this system could be incorporated as early as this summer and has the potential to increase the speed of the boat even further.