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Old Nov 23, 2012, 11:15 AM
Lee
PERFECT LANDING !!!
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USA, UT, Orem
Joined Jul 2004
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I have a friend that sez I will never be able to fly plane like a bird because a bird has a brain the size of a walnut and I can't compete with that.
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Old Nov 23, 2012, 11:20 AM
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Va.Beach VA.
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Oh that's nice Highviz...
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Old Nov 23, 2012, 11:22 AM
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Ha, ha..that's funny, Lee.
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Old Dec 01, 2012, 06:00 AM
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France, IdF, La Roche-Guyon
Joined Oct 2011
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flat tail without vertical rudder

hi everyone, here is my contribution to the thread; it fliesonly in slope soaring, it's near 1m30 wingspan , weight is 270g and it flies great in 15 to 25km/h of wind. eppler186 airfoil, 2 new wings are going to be built with eppler184 and eppler182 to try to fly in stronger wind. hope you'll enjoy!


the commands in action:

prototype d'oiseau rc: commandes de roulis, tangage et lacet (1 min 13 sec)



a flight in approximately 10km/h wind:

proto d'oiseau-rc, 2nde seance de vols tests, BEYNE CAB, faible vent (environ 10km/h) (2 min 31 sec)



a flight in approximately 30km/h wind:

proto oiseau BEYNE CAB 011112 30kmh ailes modifiées (5 min 21 sec)
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Old Dec 01, 2012, 06:20 AM
Good Better Best quest.
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Australia, VIC, Cranbourne East
Joined Apr 2004
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Nice work on the control surfaces , but it needs to penetrate a lot better ,cuttting bevel edges on all the feathers helped mine but I needed thinner wing section also,cutting down the surface area by using rounded body would help also.
good luck on the next one .
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Old Dec 01, 2012, 10:08 AM
Dance the skies...
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United States, MA, Walpole
Joined Dec 2003
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Interesting variation on the tail feather hinge orientation. Does this give some banking about the roll axis in addition to elevator pitch control? And the "crow" control surfaces on the wings (up aileron with down flap)... is this used to lateral control in lieu of a rudder?

Quote:
Originally Posted by MrGloriousfall View Post
hi everyone, here is my contribution to the thread; it fliesonly in slope soaring, it's near 1m30 wingspan , weight is 270g and it flies great in 15 to 25km/h of wind. eppler186 airfoil, 2 new wings are going to be built with eppler184 and eppler182 to try to fly in stronger wind. hope you'll enjoy!


the commands in action:

https://www.youtube.com/watch?v=5lT5...=results_video


a flight in approximately 10km/h wind:

http://www.youtube.com/watch?v=KNs72nc2f2Q


a flight in approximately 30km/h wind:

https://www.youtube.com/watch?v=Ch202fXRViU
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Old Dec 01, 2012, 10:43 AM
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France, IdF, La Roche-Guyon
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hi tom,

i builded this like the inakakoubou condor (look at his youtube channel, i saw some of his vids earlier in the thread).

this kind of control on the wing has the same effects that classicals ailerons, inakakoubou says its the only way to make it turn because there s no vertical fin.

its mix with the tail to be more efficient: for a left turn, on the left wing aileron gets up while flap gets down, nothing happen on the right wing but the left elvator get up while the right elevator gets down.

it works pretty well, u can make complete circles easily, i v got a real control of the flight
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Old Dec 01, 2012, 10:46 AM
Dance the skies...
Tom Frank's Avatar
United States, MA, Walpole
Joined Dec 2003
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Quote:
Originally Posted by MrGloriousfall View Post
hi tom,

i builded this like the inakakoubou condor (look at his youtube channel, i saw some of his vids earlier in the thread).

this kind of control on the wing has the same effect that classical ailerons, some say its the only to make it turn because there s no vertical fin.

its mix with the tail to be more efficiency: for a left turn, on the left wing outside aileron gets up while inside aileron get down, nothing happen on the right wing but the left elvator get up while the right elevator gets down.

it works pretty well, u can make complete circles easily, i v got a real control of the flight
Thanks... just as I thought! It flies very stable!
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Old Dec 01, 2012, 11:40 AM
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United States, CA, San Rafael
Joined Mar 2012
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Tres cool Mr Gloriousfall!
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Old Dec 01, 2012, 12:12 PM
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United States, CA, San Rafael
Joined Mar 2012
131 Posts
Here's my latest bird-like plank wing:
Flying The Petrel (5 min 22 sec)


It's more like a powered moth slope glider than a realistic bird, but I took inspiration from gulls and hawks when designing it. It flies great!
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Old Dec 01, 2012, 10:51 PM
skumgummi dave
Gresham, OR.
Joined Mar 2004
1,766 Posts
Averan:

Would like to see a plan for the Petral if you are so inclined.

Thank you;

Dave-
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Old Dec 02, 2012, 11:03 AM
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United States, CA, San Rafael
Joined Mar 2012
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Quote:
Originally Posted by foamdave View Post
Averan:

Would like to see a plan for the Petral if you are so inclined.

Thank you;

Dave-
I'll give it a go. Will take me a few days.

I've got a few different ways to make the fuse, but carved this one out of EPP. It can easily be done with flat foam.
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Old Dec 04, 2012, 12:50 AM
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United States, CA, San Rafael
Joined Mar 2012
131 Posts
Petrel plans

Hey Dave,

Here's what I've sketched up so far for a cut EPP fuse. Its not an exact science of course, but there are a few details I should probably point out in a video. I'll start a separate thread for all that and post the link here when I have more to share. A lot of tricks come from the 'scratchbuild university' thread, including the use of plastic credit/gift cards for motor mount and strengthening weak joints or sections. I cut one up and lined four pieces inside the square spar hole through the fuselage so that taking the wings on and off would not tear away the foam. I also bent one into three sections and taped it over the nose to create a motor mount.

Note the square balsa wood main wing spar; much stronger than round and easier to secure inside the wing. Of course feel free to adapt to carbon spars or whatever you prefer! =)

I'll continue working to make a flat foam fuse version too.

Thanks for your interest! =)
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Old Dec 04, 2012, 04:39 AM
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Va.Beach VA.
Joined Aug 2007
1,998 Posts
Quote:
Originally Posted by MrGloriousfall View Post
hi everyone, here is my contribution to the thread; it fliesonly in slope soaring, it's near 1m30 wingspan , weight is 270g and it flies great in 15 to 25km/h of wind. eppler186 airfoil, 2 new wings are going to be built with eppler184 and eppler182 to try to fly in stronger wind. hope you'll enjoy!


the commands in action:

https://www.youtube.com/watch?v=5lT5...=results_video


a flight in approximately 10km/h wind:

http://www.youtube.com/watch?v=KNs72nc2f2Q


a flight in approximately 30km/h wind:

https://www.youtube.com/watch?v=Ch202fXRViU
Excellent! That was very inspiring I'm glad someone else tried that technique.

Question: Will this technique do well with a motor in it? And how with the plane behave with less polyhedral?
Again, excellent video.
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Old Dec 04, 2012, 11:24 AM
skumgummi dave
Gresham, OR.
Joined Mar 2004
1,766 Posts
Averan:

Thank you. The plans look good... Looking forward to more info.

Regards;

Dave-
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