forums energies: society, ecology and clean technologies

Hi Rick,

This new subject is espacialy for us: you with the Black Bird TEAM and me with the Robiplan TEAM.
With Christophe the web master of Econologie we think it's the best solution.

this subject begin with this double drawing:



On the right, The "little red bird" with his actual disposition of wings
- this provision is called “small span / low torque”
- it's this disposition witch is turning on the open road videos:

http://www.ipernity.com/doc/88550/9435308

http://www.ipernity.com/doc/88550/9435339



On the left, another best disposition:
Same wings areas but the torque at the starting point is x 2
This provision is called “great span / high torque”

has you can see the ROBIPLAN WINGS will take different shapes for different performances!

"I think very longs wings are better but than, the span become quickly so great to go on the open road"

On my big Silver Bird the shape is "near a square" (1,75 m high and 1,5 m wide):





"With the smile of the wind"



Rick: are you on this picture?


have a great day

pascal

Thanks! Very nice of you to start a thread in English for us.

>> Rick: are you on this picture?

Yes, I'm the silly looking one on the right. JB is the sillier looking one on the left. Any time you see someone driving Blackbird - that's me.

Hi Rick!

very happy to meet you trough thesis two nices pictures!

welcome!

for your runs: what is the name of yhe salt lake?
is it near San Francisco?

Link to your web site in memory for the readers:

http://www.fasterthanthewind.org/2009/1 ... llaro.html

:-)

pascal

Hi the Econology's Friends

Nice helmet Rick!

Very useful in order not to take a blade on the edge of the nose

Perhaps the yellow glass are not reinforced enough

Hi,
Epure of the ROBIPLAN movement? : it's a Viviani curve, or a Clélie of Pappus with n = 1:

generic moving trace:


and



have a great day

Pascal

I take opportunity of this english subject by asking something about efficiency. Is it right to thinking that according to his design, the Robiplan have his best efficiency with a rotating wind?

blackbird wrote:Thanks! Very nice of you to start a thread in English for us.

Not for long as you understand how much some are wrong in English here! (Like me, ha! Ha!)

Is the Black-Bird has already been tested in a wind tunnel?

Hi everybody,

good english? good french? it's not the subject
the real subjet is that:

3 minuts for at NICE RUN with a self start of the Black BIRD:

http://www.youtube.com/watch?v=5CcgmpBGSCI.

thank 'RICK for thesis nices dynamics views





A+

have a great day




Pascal

Yeaaah! Thx.

And have fun!

Obamot wrote:I take opportunity of this english subject by asking something about efficiency. Is it right to thinking that according to his design, the Robiplan have his best efficiency with a rotating wind?

HI Obamot:

We will have serious answers before Christmas!

We do not yet know exactly where is the return of Excellence for the wind aréa of the ROBIPLAN: in what range of wind speed, or in what kind of direction between 0 and 360 degrees. ...
We only know that it starts by himself 100% up / against under relatively low wind ... .. then he can easily take a open road profile that includes short climbs thanks to its "continual adjustment system" of impact of the wind.
The canopy installation of BIG SILVER BIRD ends now: it's easier than I thought but i go “slowly”… because I do not mean to rush the thing.
A scoop? : The wing will be mixed with some hard = aluminum plates on the outer half area and a portion removable canvas in the second half (inner surface near the axis ... thus with little operation I could move from a low wind to a high wind low wind and vice versa in a few minutes and easy modifications.

That's all I can say for you now Obamo .... The next weeks will be probably deliver a rich and interesting observations quantity measured better / best characterized: better quantified.

I took some holidays to finish SILVER BIRD Before the beginning of 2011

A +



Pascal

Since you're at this step, I would not make any suggestion or criticism have fun!

Best Regards,