Wingtip less ring wing Vario Copter
BG and EN .pdf presentation download here
The asymmetric reduction in the area of the oval wing maintains zero wingtip induced drag (37% of total drag), but reduces its lift. It is over-compensated by the wing's lower self-mass and lower skin friction drag, due to its reduced wing surface area and dimples (similar to the dimples on golf balls) on its underside. We obtained such definitive results from laboratory measurements on wind and hydrokinetic turbines with similar elliptical blades
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Used petroleum fuels in aviation are already economically
unprofitable, due to the suspension of inexpensive supplies from
Russia. And because electric traction powered by batteries or
hydrogen fuel cells is much more energy efficient and
environmentally friendly.
The aviation solution for increased payload is high-span wings.
They are known to form strong wingtip vortices. This causes
significant energy losses, particularly high at limited wingspan,
which is mandatory for roadable aerocars.
That's why we developed innovative, compact, annular ring wings.
The lack of wingtips guarantees zero wingtip losses. Due to
their spatial construction, they are mechanically much stronger.
Therefore, their comparative cost is significantly lower,
compared to that of conventional wings produced from similar
materials and with similar technologies. This directly stems
from their marked aerodynamic and structural advantages.
Our innovative projects, with world patent novelities from 2022
and 2023, are presented in all pagesof
this site.
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George Tonchev,+359 876 403 727 InventorTonchev@gmail.com
Inventors and patent holders
George Tonchev, Veselin Vassilev. Alexander Lupov.