You may have seen the ornithopter in Dune movie (2021).In this video we are going to look at the propulsive efficiency of the king predator from the insect world i.e. the dragonfly. By flapping its wings with the right phase shift, it is able to generate 120% of the lift than compared to single pair of wings. We will also look at artificial electrical muscles to power them. Entomopter is also covered. Details of Riout 102 T Alerion https://oldmachinepress.com/2017/11/20/riout-102t-alerion-ornithopter/ Phasing of dragonfly wings article https://royalsocietypublishing.org/doi/full/10.1098/rsif.2008.0124 NASA article on Flapping wing https://ntrs.nasa.gov/api/citations/19800007775/downloads/19800007775.pdf Serenity Ornithopter https://www.youtube.com/watch?v=ZCrS52sM3Zs Dr Kazuhiko Kakuta Channel https://www.youtube.com/channel/UCAanjlVj-9dI6-Akwd1f5EQ