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Old Apr 27, 2012, 12:06 PM
Blue Falcon
bluefalconhollan's Avatar
the Netherlands
Joined Jan 2007
707 Posts
My next fpv eagle during the build...the new thing is the folded prop in het neck. Fiberglass fuselage, eps wings covered by glass. Spann 2,4m.
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Old Apr 27, 2012, 12:13 PM
Dance the skies...
Tom Frank's Avatar
United States, MA, Walpole
Joined Dec 2003
17,568 Posts
Quote:
Originally Posted by bluefalconhollan View Post
My next fpv eagle during the build...the new thing is the folded prop in het neck. Fiberglass fuselage, eps wings covered by glass. Spann 2,4m.
More info, please! How does that "neck" prop work? Is the head part of a spinner? Seems that would cause some serious balancing issues, and result in the head stopping at odd angles when power off.
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Old Apr 27, 2012, 12:56 PM
Blue Falcon
bluefalconhollan's Avatar
the Netherlands
Joined Jan 2007
707 Posts
The neck is not moving at all! The prop is simply mounted on the motor bell. The head of the eagle is fixed to the motor shaft that doesn't rotate.
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Old Apr 27, 2012, 01:09 PM
Dance the skies...
Tom Frank's Avatar
United States, MA, Walpole
Joined Dec 2003
17,568 Posts
Quote:
Originally Posted by bluefalconhollan View Post
The neck is not moving at all! The prop is simply mounted on the motor bell. The head of the eagle is fixed to the motor shaft that doesn't rotate.
Clever. But the rotor is normally fixed to the shaft and supported by the shaft bearings, so you must have a hollow motor shaft with a non-rotating center shaft (like the reversible pitch prop motors for 3D) to anchor the head? Is that a custom machined folding prop adaptor? Very nice adaptation!
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Old Apr 27, 2012, 04:37 PM
Where'd The Wise Men Go?!?
AC5FF's Avatar
United States, NE, Bellevue
Joined Sep 2007
2,969 Posts
Agree with Tom!

VERY Clever and GREAT look!!!

I couldn't tell if this has been flight tested this way though... Or did I miss something?
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Old Apr 28, 2012, 05:25 AM
Registered User
France, PACA, Marseille
Joined May 2010
39 Posts
Nice concept ! Thank you for sharing
Arnaud
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Old Apr 28, 2012, 09:14 AM
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G-LO's Avatar
Va.Beach VA.
Joined Aug 2007
2,129 Posts
Love to see it completed.
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Old Apr 28, 2012, 10:06 AM
Blue Falcon
bluefalconhollan's Avatar
the Netherlands
Joined Jan 2007
707 Posts
Quote:
Originally Posted by G-LO View Post
Love to see it completed.
The model is nearly finished. Hope to make the maiden in about a week.
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Old Apr 28, 2012, 10:14 AM
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G-LO's Avatar
Va.Beach VA.
Joined Aug 2007
2,129 Posts
Wow..nice!
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Old Apr 29, 2012, 07:44 AM
What could possibly go wrong?
nickchud's Avatar
Market Harborough
Joined Apr 2006
3,697 Posts
Yes, beautiful!

Tell us about vertical surface and yaw control. Is it something to do with those wingtips?

ingenious!

Nick
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Old May 05, 2012, 03:16 PM
Blue Falcon
bluefalconhollan's Avatar
the Netherlands
Joined Jan 2007
707 Posts
http://www.youtube.com/watch?v=BCOOklAyl4Q
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Old May 06, 2012, 10:44 AM
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TBolt's Avatar
United States, AZ, Queen Creek
Joined May 2004
5,117 Posts
That is too cool.
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Old May 06, 2012, 11:23 AM
Lee
PERFECT LANDING !!!
Lee's Avatar
USA, UT, Orem
Joined Jul 2004
9,079 Posts
Great design and video of the feathers. I lived in Nederland back in the 70s for a couple of years. Nice to see how green it is there. Sure beats the desert here. I would love to see some camera video though the windmills and over the tulip farms.

I have been thinking that the square wing has some possibilities. Some of the spin off designs that are inspired in part by the old peregrine is our slow flyers. http://www.rcgroups.com/forums/showthread.php?t=1538751. I have had the desire to get a bird look to these planes without messing up the aerodynamics. These planes will level themselves and put their nose on the horizon without pilot input. It would be great to have a bird plane that did that.

Your square wing gives a little inspiration that the polyhedral design may not be so noticeable in the air if the fuse, tail, TE of the wing and tips have the right look.

Any ideas????
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Old May 08, 2012, 06:14 AM
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flahut59's Avatar
France, Nord-Pas-de-Calais, Oignies
Joined Dec 2008
40 Posts
Hi all,
Yes it flies!!!!!

Aigle depron (3 min 17 sec)
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Old May 08, 2012, 12:05 PM
Registered User
United States, CA, San Rafael
Joined Mar 2012
131 Posts
Made some progress on my flat foam seagull; mainly cut the ailerons, added servos and attached the motor mount.

Motor is mounted at a slight downward angle so that the angle of attack of the wings is tilted up a bit. Next step is figuring out how to fit all the components into the fuselage. I'll attach a 3-sided body/fuselage to the underside, connecting to the central profile fuse and the wings, to protect everything and reduce drag.

I'm hoping the dihedral and simple v-tail will make this a fairly stable flying wing.
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