Video clip of ornithopter Gu-Gu:
http://www.youtube.com/watch?v=-3YcbT0mMtM
Regards,
SloMi
----- Original Message -----
From: ray_harlan
To: Indoor_Construction_at_yahoogroups.com
Sent: Thursday, June 24, 2010 2:06 AM
Subject: [Indoor_Construction] Re: interesting link about ornithopters
I'm not sure it matters what you call it. The net force is sufficient to lift the model and propel it forward in a fairly steady manner, with speed and climb rate diminishing over time. A fully wound ornithopter climbs very fast, doing more then 50 ft per minute at the start.
The generation of forces is too complicated for me to analyse (and I'm too lazy to even try). I just know it works. As the downeaster said "G...d...it man, I don't understand everything I know!"
Ray
--- In Indoor_Construction_at_yahoogroups.com, "john_kagan" <john_kagan_at_...> wrote:
>
> --- In Indoor_Construction_at_yahoogroups.com, "ray_harlan" <rbharlan_at_> wrote:
> >
> > Being another devil, I'd say that, since the CG is closer to the wing than the canard, that most of the lift comes from the wing and not the canard.
>
> I wondered about the CG, never having built one. Do you feel that the wing lift is due to thrust vectoring, or from actualy airflow over the wings?
>
> It seems that a monarch butterfly, for example, is getting "normal" airplane type lift off its wings, as well as getting thrust from the flapping. (It's probably obvious that I've never really thought about ornithopers much).
>
Received on Fri Jun 25 2010 - 15:57:53 CEST