Kort nozzles

[mgpedersen]

I have a few questions on Kort nozzles.

1) Is there a rule of thumb for tip clearance?
2) Do the prop tips have to be squared off?
2b) If they do have to be squared off, do you modify a "normal" prop by cutting off the tips or do I find a custom square tipped prop?
3) If the nozzle is made from composite, what sort of scantlings should I use?
4) What is the effect if the nozzle isn't a ring, but more of a square outside shape with a hole "drilled" in the middle?

Thanks for indulging.

Matt

[Pericles]

Google.

http://www.navweaps.com/index_tech/tech-023.htm

http://www.marinepropulsion.net/kort/nozzle.htm

http://www.marinepropulsion.net/kort/nozzle.htm

http://www.marinepropulsion.net/kort/nozzle.htm

http://www.olds.com.au/marine/nozzles/

http://www.harringtonmarine.com/

Pericles

[Guillermo]

Also this one, with some answers to your questions:
http://www.olds.com.au/marine/maximi...on_efficiency/

Also interesting:
http://www.manbw.com/files/news/file...%20Vessels.pdf

Also search these forums for 'kort nozzle'

Cheers.