Ultra Light-weight Model Plane Float in the sky in Sora-Fes!
(This article was originally posted in Japanese at 23:56 Mar. 07, 2010.)
One of the oddest things to fly is the ultra-light weight model plane. Seeing it flying in quite a slow speed, you might want to say it is more "floating" than "flying". It's slow, gentle, just like soap bubble in the air.
But its mechanism is as sophisticated as a Swiss-made watch, combining smaller-than-fingernail parts with hair-thin wires. And even surprising is that they do all these as hobby, not a paid work.
In Sora-Fes, a model airplane-themed con held in Tokyo on Mar. 06, 2010, there were splendid model planes as light as a piece of paper. Just take a look at the great works.
Read on for detail.
Sora-Fes! Official Site
Light-weight model planes in Sora-Fes.
Here's a video of flying ultra-lightweight model planes showing quite an elegant movement.
YouTube - Ultra-lightweight model planes floating in air in Sora-Fes!
Multiplane made with balsa material.
For beginners, you should use styrene board for fuselages and wings, for its much lighter than balsa woods and workable.
YouTube - Ultra-lightweight Multiplane slowly flying in Sora-Fes!
Its mechanism is light and precise. What you can see in this picture are FM receiver, motor, and battery connector.
60cm Meganeura by Habataki Hiko-ki Seisaku Kobo, a giant four-winged ornithopter.
It's like a bird wandering for its prey.
YouTube - A giant ornithopter flying in Sora-Fes!
Even more compact mechanism.
There is nothing unessential on this plane.
From the top.
Battery is coin-sized. This size makes these planes fly for five minutes.
The battery is small, but its a heavy load for these lightweight planes.
Even smaller ornithopter was also displayed.
Not only radio waves, they also used infrared light for controlling airplanes.