This is the best tl;dr I could make, original reduced by 97%. (I'm a bot)
> We predicted the cupped clap of the flexible butterfly wings to be more efficient than a rigid wing clap since the cupped wings contain the air volume better when the wing edges form a more closed structure.
> The wake of the clap in the freely flying butterfly did not show double ring structures, which suggest the possibility that flexible wings affect the vortex formation and since a single vortex structure results in a more uniform flow than two sub-structures, there is a direct effect on the efficiency of the clap as well.4.
> The flexible membrane wings in our study showed a substantial increase in both mean impulse and efficiency compared with the solid wings during the clap.
> Wing flexibility has proven to improve aerodynamic performance of insect wings also during other phases of the wingbeat and the evolutionary step to use flexible wings, evolved for increased lift production efficiency, to generate a cupped wing shape during the clap may not be very far.
> There is some consensus that the large wings of butterflies allow for erratic flight, compared to other insects, and we would suggest that the ability to perform a powerful, thrust generating, clap can be key to this erratic flight and hence escaping a predator in butterflies.
> Although clapping flexible wings in DelFly have been suggested to generate potential benefits , the mechanism suggested is fundamentally different from the mechanism found in this study.
Summary Source | FAQ | Feedback | Top keywords: wing^#1 clap^#2 butterfly^#3 upstroke^#4 impulse^#5
Post found in /r/worldnews, /r/nature, /r/Entomology, /r/sciences and [/r/science](h
... keep reading on reddit ➡
The proceedings-B journal has a good impact factor (7ish, note that this is without manipulation of IF, as they probably don care, 10% acceptance rate). It is free to submit and free to access.
so why go beg the established gang at neuron and nature for publication and at the same time complain about open access yada yada?
