"Paul Sengupta" wrote in message
...

"Qingpei Hu" wrote in message
m...
I am thinking on what the rubber powered one looks like...
Is it small? gentle? or lovely even.

really wanna know these.

There was one shown on a programme on TV here in the
UK yesterday. Can't remember exactly, but I think it was
on Channel 5, and it was about UAVs. (Unmanned
Aerial Vehicles).

It was about 6" long with fluttering wings fore and aft which
twisted in opposite directions...all made out of some very
thin plastic/paper covered balsa wood by the look of it.

http://modena.intergate.ca/business/.../flutterby.htm
http://www.ornithopter-pilot.com/BittenByADragonfly.PDF
http://homepage1.nifty.com/akatombo/e-product.html

Paul