Back to work in the dungeon.
Some ideas have been flying around and I made some changes. The latest addition to the Ductlings, the WAV (winged “A” frame vehicle). Why this?... You may ask…. Well, after reviewing all my designs I came to a conclusion I kept a wedge like frame in all the planes that lead to the Ductlings.
An “A” frame structure is simple and strong. I built several 1/40th scale models to work out the desired conclusion.
In this process I discover what may have prevented a steady glide path in my test flights.
The VeeBee has two type of airfoils built in.
• The body (lifting body)
• The winglets
The thicker line represents the outer sides of the WAV body where the duct-vane is located. You can get a better view at my site.
In this diagram represent the correction used with the WAV. The new corrected version, will compensate for the different foils. The main (center) foil trailing edge is complimentary to that of the winglets.
At different speeds the foils react differently. With the VeeBee the two body foils share the same trailing edge, and created a different angle of attack with the winglets, this contributed to an unstable glide path.
So goes the theory.
Well I need to test this. I will keep you posted.
Later…. BetterFly ~V~
