The Common Fly – A marvel of flight engineering

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“Just one more of many marvels of design in nature.”  Admin

The humble fly hovering over a garbage can is routinely capable of some high-speed aeronautic manoeuvres that have long boggled the minds of aircraft designers and engineers. If a male fly chasing a potential mate sees her change course ever so slightly, he will respond with an appropriate change of his own in just 30 milliseconds!

It has long been known that the amazing stability of flies as they zip around has a lot to do with the two tiny club-shaped ‘balancing organs’ they have, called halteres (see Figure 1, right). Some insects have four wings, while others, like the so-called ‘true flies’, have two (hence their ordinal name Diptera). Evolutionists believe today’s flies descended from four-winged ancestors, of which the rear two wings have become ‘vestigial’ or reduced in their flight function to become the halteres.

There is of course no scientific reason to deny that the halteres are incredibly well designed, efficient organs in their own right. They have long been known for their function as flight stabilizers, like gyroscopes on airplanes that prevent excessive roll, pitch or yaw. Part of the way this works is that the halteres mostly beat in antiphase to the actual wings. But since such a stabilizing function would tend to make the fly keep flying straight, how does it manage to ‘disable’ this gyroscopic function in order to change course so quickly?

Read More  Why a fly can fly like a fly.

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  • Categories: Biology