Aerowerx
Well-Known Member
I have created an Excel spreadsheet for calculating the twist of a Horten style wing. It also calculates several other parameters, as described in Karl Nickel's book "Tailless Aircraft in Theory and Practice".
This is for a single taper wing only, as I am still working on the "extended center chord" problem as seen on several of the Horten designs.
It has taken a while for me to understand enough so that I can create this spreadsheet. The biggest problem is that I had to collect equations from many different sources, so I claim no originality for any of this. I know there are others out there in HBA land that are interested in tailless aircraft, so here it is....
View attachment BSLD Twist - Copy.xls
I hope this works. The attachment loader did not like the ".xlsx" file extension so I had to rename it to ".xls".
If you find anything that does not look right, or have any questions, please let me know. I am not arrogant enough to think that this is perfect (well, maybe almost
).
By the way, XFLR5 seems happy with the results.
[Edit] Forgot one note on the spreadsheet. Distances are related to the wing leading edge at the centerline.
[Edit] Another note...The value "C-CG" must be positive for stability.
This is for a single taper wing only, as I am still working on the "extended center chord" problem as seen on several of the Horten designs.
It has taken a while for me to understand enough so that I can create this spreadsheet. The biggest problem is that I had to collect equations from many different sources, so I claim no originality for any of this. I know there are others out there in HBA land that are interested in tailless aircraft, so here it is....
View attachment BSLD Twist - Copy.xls
I hope this works. The attachment loader did not like the ".xlsx" file extension so I had to rename it to ".xls".
If you find anything that does not look right, or have any questions, please let me know. I am not arrogant enough to think that this is perfect (well, maybe almost
).By the way, XFLR5 seems happy with the results.
[Edit] Forgot one note on the spreadsheet. Distances are related to the wing leading edge at the centerline.
[Edit] Another note...The value "C-CG" must be positive for stability.
