Aerowerx
Well-Known Member
The February 2017 Issue of RCSD had an installment of "On the Wing". If you are interested in flying wings, it would pay you to look up "On the Wing" in the RCSD archives.
This installment contains some quotes from Al Bowers on how to get the required twist for a Horten-like wing. Here is a snip, which I hope is readable.
In case you can't read it, here is a summary:
1. Decide what the over all wing design coefficient of lift will be.
2. Set the root at 0 degrees.
3. Set the 25% span position at an angle numerically equal to the design lift coefficient (wash in)
4. Set the 50% span position at 0 degrees.
5. Set the tip at an angle numerically equal to -20 times the design lift coefficient. (wash out)
6. Draw a smooth curve between these 4 point to get the twist distribution.
It says that this is an approximation, and that there is a precise method but doesn't give that, or a reference to it. Has anyone seen it?
There is also a statement from Al Bowers that he will personally come and cut up your wing if you try to build a full-scale people-carrying wing using this method:shock:!
This installment contains some quotes from Al Bowers on how to get the required twist for a Horten-like wing. Here is a snip, which I hope is readable.
In case you can't read it, here is a summary:
1. Decide what the over all wing design coefficient of lift will be.
2. Set the root at 0 degrees.
3. Set the 25% span position at an angle numerically equal to the design lift coefficient (wash in)
4. Set the 50% span position at 0 degrees.
5. Set the tip at an angle numerically equal to -20 times the design lift coefficient. (wash out)
6. Draw a smooth curve between these 4 point to get the twist distribution.
It says that this is an approximation, and that there is a precise method but doesn't give that, or a reference to it. Has anyone seen it?
There is also a statement from Al Bowers that he will personally come and cut up your wing if you try to build a full-scale people-carrying wing using this method:shock:!
