Smoke signals helps robots fly better (Image: Simon Walker, Animal Flight Group, Oxford University)

A LOCUST flight simulator could be the key to perfecting the ultimate surveillance machine: an artificial flying insect. The simulator can model the way wings of varying shapes and surface features beat, as well as how they change their shape during flight.

The device was created using extremely high-speed flash photography to track the way smoke particles flow over a locust’s wings in a wind tunnel – a technique called particle flow velocimetry. This allowed researchers at the University of Oxford to build a computer model …