New World Record RC Airplane Speed 548mph
 

Dynamic soaring. No motors, no engine, no thrust of any kind. Just harnessing the power of the wind that accelerates up hill. The trick is to know the currents of the wind and to accelerate up the hill and knowing when and where to come up and not lose any speed. Picking up tailwind speed with each successive loop.

The black footed albatross harnesses the wind differential in the ocean swells in a similar way to traverse great distances without expending any energy and even while sleeping.

No sleeping or even so much as blinking at these speeds with these models! :D

https://youtu.be/4eFD_Wj6dhk

I just got dizzy watching.

Like watching a 'fast' tennis match. Had no idea they approached mach 1.

Last trip to the south shore of Maui, which has many cliffs dropping off into the ocean, folks were flying RC gliders in a similar fashion. It was several hundred yards down the hill to sheer drop into the water. Would not want to trip and get into an uncontrolled roll down same.

Insane speed. Slope soaring is fun but this is another level all together. :D

I had to see...

:dazed: