  We present a design of a bird-inspired morphing wing aircraft, including
bionic research, modeling, simulation and flight experiments. Inspired by birds
and activated by a planar linkage, our proposed aircraft has three key states:
gliding, descending and high-maneuverability. We build the aerodynamic model of
the aircraft and analyze its mechanisms to find out a group of optimized
parameters. Furthermore, we validate our design by Computational Fluid Dynamics
(CFD) simulation based on Lattice-Boltzmann technology and determine three
phases of the planar linkage for the three states. Lastly, we manufacture a
prototype and conduct flight experiments to test the performance of the
aircraft.
