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Flapping-mode changes and aerodynamic mechanisms in miniature insects.
- Source :
-
Physical Review E . Jan2019, Vol. 99 Issue 1, p1-1. 1p. - Publication Year :
- 2019
-
Abstract
- Miniature insects fly at very low Reynolds number (Re); low Re means large viscous effect. If flapping as larger insects, sufficient vertical force cannot be produced. We measure the wing kinematics for miniature-insect species of different sizes and compute the aerodynamic forces. The planar upstroke commonly used by larger insects changes to a U-shaped upstroke, which becomes deeper as size or Re decreases. For relatively large miniature insects, the U-shaped upstroke produces a larger vertical force than a planar upstroke by having a larger wing velocity and, for very small ones, the deep U-shaped upstroke produces a large transient drag directed upwards, providing the required vertical force. [ABSTRACT FROM AUTHOR]
- Subjects :
- *INSECTS
*REYNOLDS number
*AERODYNAMIC load
Subjects
Details
- Language :
- English
- ISSN :
- 24700045
- Volume :
- 99
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Physical Review E
- Publication Type :
- Academic Journal
- Accession number :
- 134633861
- Full Text :
- https://doi.org/10.1103/PhysRevE.99.012419