Imperial College London

Dr Thrishantha Nanayakkara

Faculty of EngineeringDyson School of Design Engineering

Reader in Design Engineering and Robotics



+44 (0)20 7594 0965t.nanayakkara Website CV




RCS1 M229Dyson BuildingSouth Kensington Campus






BibTex format

author = {Zheng, M and Sadati, SMH and Ghalamchi, P and Nanayakkara, T},
doi = {10.1109/ICIAFS.2014.7069582},
title = {Passive dynamics of high frequency bat wing flapping with an anisotropic membrane},
url = {},
year = {2014}

RIS format (EndNote, RefMan)

AB - © 2014 IEEE. We investigate how unmanned aerial vehicles (UAVs) with flexible wings can be designed to exploit the aeroelasticity of wing deformation that is present in bat wings, with a view to improve the efficiency of flight. We constructed a robotic bat wing with fully passive elastic wing-folding properties. The robotic wing is powered by a gearbox running two synchronised motors, effectively providing one degree of motion: the upstroke and down-stroke of the wing. Through numerical simulations and setup experiments, we observed that by integrating a span-wise elastic network into the bat wing, we were able to achieve passive wing-folding that mimics the 8-shape wing-folding seen in bats' high speed flight. This way, we were able to reduce the complexity and additional actuation associated with wing-folding in a robotic wing.
AU - Zheng,M
AU - Sadati,SMH
AU - Ghalamchi,P
AU - Nanayakkara,T
DO - 10.1109/ICIAFS.2014.7069582
PY - 2014///
TI - Passive dynamics of high frequency bat wing flapping with an anisotropic membrane
UR -
ER -