Can not design prop?



you need to change from air to water properties in the Options tab:


Yes i did but still not work


untick the “Shrouded rotor” box and you’ll be ok.


hey matt, to create an impeller, ducted prop do you untick shroud? whats the continued process from where you have left off explaining haha??

sorry i am struggling to work it out as well



I’m by no mean a pro of java prop, i just played a bit with it… but i’m now sticking to a commercial prop slightly modified for initial tests.
Based on what i saw in the javaprop manual, i wouldn’t try to include the duct at that stage and i’m not convinced it would completely be taken into account in the calculation… just design a regular prop, may be with square tip, and add your duct after.

If someone else knows better, please prove me wrong …



Javaprop offer a good starting point, but then you need do deeply modify the blade exported in a 3d cad.


I swear this site and you guys are making me smarter.