78Views3Replies

Author Options:

What would be a good material for creating a custom vertically oriented wind turbine blades? Answered


For a school project my group an I are building a vertically oriented wind turbine  similar in orientation to the one in the link(http://www.youtube.com/watch?v=rLa_NY5U1nk)

We would like to build a few different designs to test which will give us the best efficiency as we will do using it to generate maximum output voltage.

I'm wondering, what would be a good way to create these different custom pieces, especially the curved airfoil shapes we may wish to utilize in the design?
Thanks!


Discussions

0
None
kevinhannan

8 years ago

as a school project - this suggests to me that cash might be an issue and also diy skills might be more valued in such a project and so I would suggest using plexiglass that has been cut to the desired length and then *gently* heated across the whole plexiglass face while each end is twisted manually to the desired rotation/twist - I'd test it out first with a stiff card model to find our the actual shape of the vanes first. Failing that I'd be tempted to use several layers of stiff cardboard glued together with each end fitting into a disc into which slots have been cut so that it can accept and secure the vanes at both ends to help keep its shape. Again, it depends on the size and the amount of wind-power you are going to subject the thing to.

0
None
steveastrouk

8 years ago

I agree with Rick, but I'd add fibreglass to the list of possibilities.

Steve

0
None
rickharris

8 years ago

If it were me and I was trying to develop something so I needed to try several different designs - I would first build the core with some good bearings and then arrange a way to bolt on the different turbine blades I might try.

You don't say if this is full size or a model. BUT Balsa wood in small sizes can be easily shaped and is quite strong and the high density insulation foam also works and is easily shaped. - Used a lot by aero modellers (NOT standard styro foam made from beads)

For larger system plywood is very strong and light weight.

A built up aerofoil is likely to be stronger than a solid one. So investigate covering materials such as Solar Film used by aero modellers.

For complex curved blades as in the video I would look at aluminium sheet folded and cut to shape.