Model Building 101> Ornithopter Hovercraft

[wmueller10]

Originally Posted by wmueller10

not enough wing thrust was produced to get the 879 gram aircraft airborne

Velkov,
In regards to your illustration, it already weights too much as is, adding heavier 'Velkov mechanical wings' and a 'Kjell fan flapper wing' is not the solution.

Perhaps something more elegant would work such as my illustrations below.
(Forum members keep in mind this is for a Vtol ornithopter that weighs over 500 grams, not a 20 gram ornithopter).

Also some alternate form of main wing control is needed. (Wing warp, fuselage weight shifting, sliding wing spar weights have all been tryed with no positive control).

http://www.youtube.com/watch?v=ZICmrHDlT3A

[Velko Velkov]

Willi,

Thank You, but this is "Willi's variable tension wing"