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Author Topic: Zéfiro: Stick and tissue glider on the hill  (Read 1060 times)
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Alvaro Sala
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Long live google translator!



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« on: September 19, 2011, 09:49:54 PM »

Hi all,
In 2009 I designed and built the Zéfiro (Zephyr). It's a 2 channel (rudder elevator) stick and tissue glider for hi start.
Well, I would never belive that an all-balsa and Ezaki model could fly on the slope, but the model is tough and faced the wind.
I asked to my friend and great pilot Marcos Quito to pilot the model and I took this video yesterday at Pirapora do Bom Jesus.

http://www.youtube.com/watch?v=aelRqM_iYXY&feature=player_embedded
Attached files Thumbnail(s):
Zéfiro: Stick and tissue glider on the hill
Zéfiro: Stick and tissue glider on the hill
Zéfiro: Stick and tissue glider on the hill
Zéfiro: Stick and tissue glider on the hill
Zéfiro: Stick and tissue glider on the hill
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Brazil: Where the nuts come from.
Yak 52
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Jon Whitmore



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« Reply #1 on: September 26, 2011, 04:44:53 AM »

Very nice Alvaro!

Could you provide some details? What is the wing span? What airfoil section did you use?

Jon
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dputt7
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« Reply #2 on: September 26, 2011, 08:54:30 AM »

Hi Alvaro
Your videos are always entertaining, Next time could we see just a bit more of that magnificent scenery. Thanks for sharing.
regards Dave
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Alvaro Sala
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Long live google translator!



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« Reply #3 on: September 26, 2011, 08:50:48 PM »

Hi Jon,
The Zéfiro has a wingspan of 88.6 cm with a wing area of 10 square decimeters. Its weight to launch with hi-start is 120g, but on the hill I added ballast and it flew weighing about 160g.

I chose this airfoil because I had seen free flight models designed by my professor Omar Grassetti to beat the wind with low drag and good lift.
Attached files Thumbnail(s):
Re: Zéfiro: Stick and tissue glider on the hill
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Alvaro Sala
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Topic starter
Long live google translator!



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« Reply #4 on: September 26, 2011, 09:40:03 PM »

Hi Alvaro
             Your videos are always entertaining, Next time could we see just a bit more of that magnificent scenery. Thanks for sharing.
                                                                                                                  regards Dave

Dave,
Thank you for your compliment. The scenery is truly amazing.
Yesterday (Sept. 25) I was again at Pirapora do Bom Jesus to fly with my friends. The wind was strong and I decided to leave the Zéfiro in the car. I flew with my Zagi. My friend MacCross (who has a Scottish name but he is Portuguese) made ​​the video and photos.
Note the wind speed and eucalyptus bent.

Video: http://www.youtube.com/watch?v=Qe8Rk17-bYk&feature=player_embedded#!
Attached files Thumbnail(s):
Re: Zéfiro: Stick and tissue glider on the hill
Re: Zéfiro: Stick and tissue glider on the hill
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Brazil: Where the nuts come from.
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