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Wing and body motion and aerodynamic and leg forces during take-off in droneflies
- Publication Year :
- 2013
- Publisher :
- The Royal Society, 2013.
-
Abstract
- Here, we present a detailed analysis of the take-off mechanics in droneflies performing voluntary take-offs. Wing and body kinematics of the insects during take-off were measured using high-speed video techniques. Based on the measured data, the inertia force acting on the insect was computed and the aerodynamic force of the wings was calculated by the method of computational fluid dynamics. Subtracting the aerodynamic force and the weight from the inertia force gave the leg force. In take-off, a dronefly increases its stroke amplitude gradually in the first 10–14 wingbeats and becomes airborne at about the 12th wingbeat. The aerodynamic force increases monotonously from zero to a value a little larger than its weight, and the leg force decreases monotonously from a value equal to its weight to zero, showing that the droneflies do not jump and only use aerodynamic force of flapping wings to lift themselves into the air. Compared with take-offs in insects in previous studies, in which a very large force (5–10 times of the weight) generated either by jumping legs (locusts, milkweed bugs and fruit flies) or by the ‘fling’ mechanism of the wing pair (butterflies) is used in a short time, the take-off in the droneflies is relatively slow but smoother.
- Subjects :
- Biomedical Engineering
Biophysics
Video Recording
Bioengineering
Kinematics
medicine.disease_cause
Biochemistry
Biomaterials
Jumping
medicine
Animals
Wings, Animal
Research Articles
Physics
Wing
Diptera
Extremities
Mechanics
Aerodynamics
Biomechanical Phenomena
Aerodynamic force
Lift (force)
Classical mechanics
Flight, Animal
Jump
Flapping
Biotechnology
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....0c44869130390196b5bd81dc5758be06