In article ,
Tom De Moor wrote:

In article ,
says...


Sustained flight as an aircraft =/= sustained flight as an ornithopter

Why? Why would the definition of "sustained flight" change depending on
the type of craft?



Because the subject is not sustained flight but sustained flight by an
ORNITHOPTER

The Wright Flyer is not an ornithopter but an airplane/glider.

The Flapper (jet powered or propellor pushed) was claimed to maintain
flight / propulsion by the sole use of flapping wings.

There was neither a jet nor a propellor involved.


http://en.wikipedia.org/wiki/UTIAS_Ornithopter_No.1

http://www.youtube.com/watch?v=a-qS7oN-3tA


'unless your eyes are cheated by some spell'

http://ornithopter.net/images/fullscale640-hq.mpg

The ornithopter you claim has a jet engine or propellor moving away from
a standing start.

Where's the jet or propellor?

--
Alan Baker
Vancouver, British Columbia
http://gallery.me.com/alangbaker/100008/DSCF0162/web.jpg