A bio-inspired flapping wing rotor of variant frequency driven by ultrasonic motor

Simple item page
dc.contributor.authorChen, Si
dc.contributor.authorWang, Le
dc.contributor.authorGuo, Shijun
dc.contributor.authorZhao, Chunsheng
dc.contributor.authorTong, Mingbo
dc.date.accessioned2020-01-22T16:54:35Z
dc.date.available2020-01-22T16:54:35Z
dc.date.issued2020-01-06
dc.description.abstractBy combining the flapping and rotary motion, a bio-inspired flapping wing rotor (FWR) is a unique kinematics of motion. It can produce a significantly greater aerodynamic lift and efficiency than mimicking the insect wings in a vertical take-off and landing (VTOL). To produce the same lift, the FWR’s flapping frequency, twist angle, and self-propelling rotational speed is significantly smaller than the insect-like flapping wings and rotors. Like its opponents, however, the effect of variant flapping frequency (VFF) of a FWR, during a flapping cycle on its aerodynamic characteristics and efficiency, remains to be evaluated. A FWR model is built to carry out experimental work. To be able to vary the flapping frequency rapidly during a stroke, an ultrasonic motor (USM) is used to drive the FWR. Experiment and numerical simulation using computational fluid dynamics (CFD) are performed in a VFF range versus the usual constant flapping frequency (CFF) cases. The measured lifting forces agree very well with the CFD results. Flapping frequency in an up-stroke is smaller than a down-stroke, and the negative lift and inertia forces can be reduced significantly. The average lift of the FWR where the motion in VFF is greater than the CFF, in the same input motor power or equivalent flapping frequency. In other words, the required power for a VFF case to produce a specified lift is less than a CFF case. For this FWR model, the optimal installation angle of the wings for high lift and efficiency is found to be 30° and the Strouhal number of the VFF cases is between 0.3–0.36. View Full-Texten_UK
dc.identifier.citationChen S, Wang L, Guo S, et al., (2020) A bio-inspired flapping wing rotor of variant frequency driven by ultrasonic motor. Applied Sciences, Volume 10, Issue 1, January 2020, Article number 412en_UK
dc.identifier.issn2076-3417
dc.identifier.urihttps://doi.org/10.3390/app10010412
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/15000
dc.language.isoenen_UK
dc.publisherMDPIen_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectflapping wing rotoren_UK
dc.subjectultrasonic motoren_UK
dc.subjectvariable actuation frequencyen_UK
dc.titleA bio-inspired flapping wing rotor of variant frequency driven by ultrasonic motoren_UK
dc.typeArticleen_UK

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Bio-inspired_flapping_wing_rotor_of_variant_frequency_driven_by_ultrasonic motor-2020.pdf
Size:
2.84 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.63 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Staff publications (SATM)