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Old Apr 10, 2012, 09:04 AM
K Kakuta
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DragonFly 21 : Ornithopter of dragonfly with four wings

DragonFly 21 : Ornithopter of dragonfly with four wings
A flight is controlled with front wings.
Length about 50cm, Width about 70cm
I do not know whether this flies.

DragonFly 21- 4 : Action Test of the frame (3 min 52 sec)
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Old Apr 10, 2012, 09:28 AM
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Very interesting model. Congratulations !

I use similar control in my ORNITHOPTER, but I have not flaying model.
I wish You success !

Control Of Ornithopter Wing (0 min 46 sec)
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Last edited by Velko Velkov; Apr 10, 2012 at 09:33 AM.
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Old Apr 10, 2012, 10:06 AM
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You change only the angle of incidence ?
I change the flapping motion direction. I think this is more perspective.
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Old Apr 10, 2012, 10:27 AM
K Kakuta
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Quote:
Originally Posted by Velko Velkov View Post
You change only the angle of incidence ?
I change the flapping motion direction. I think this is more perspective.
Yes, I change an attack angle of front wings and control flight.
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Old Apr 10, 2012, 11:18 AM
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Control of ornithopter wing
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Last edited by Velko Velkov; Apr 10, 2012 at 12:49 PM.
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Old Apr 10, 2012, 10:07 PM
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Quote:
Originally Posted by Kazu-kaku View Post
Yes, I change an attack angle of front wings and control flight.
congratulations Dr kazu on another masterpeice so this steers by proportional steering by adjusting the height of the trailing edge correct?
regards Brian
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Old Apr 10, 2012, 10:44 PM
K Kakuta
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Quote:
Originally Posted by therealthing691 View Post
congratulations Dr kazu on another masterpeice so this steers by proportional steering by adjusting the height of the trailing edge correct?
regards Brian
Yes.
This maneuvering system is the same as a system of rear wings of Flappter19.
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Old Apr 10, 2012, 10:58 PM
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in my opinion this is a very affective way of steering congratulatons in your latest creation regards brian
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Old Apr 11, 2012, 12:57 AM
DIY Mania from Taiwan
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Quote:
Originally Posted by therealthing691 View Post
in my opinion this is a very affective way of steering congratulatons in your latest creation regards brian
+1
regards
Sam
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Old Apr 15, 2012, 06:27 AM
K Kakuta
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First flight test.

First flight test.

A tail is too big, and turning is not possible. I will thin a tail.
A thrust is not enough. I will increase thrusts.



DragonFly 21- 4 First Flight test (1 min 48 sec)
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Old Apr 15, 2012, 06:39 AM
DIY Mania from Taiwan
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Nice maidend trial
thanks for sharing
regards
Sam
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Old Apr 15, 2012, 09:04 AM
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Originally Posted by samwei1950 View Post
nice maidend trial
thanks for sharing
regards
sam
+1
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Old Apr 15, 2012, 04:58 PM
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thats so awsome, ive always wanted to see a proper dragonfly with 2 pair of wings separated, it semms like this project is harder too, cant wait to see the next changes
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Old May 06, 2012, 02:47 AM
K Kakuta
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Joined Aug 2006
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DragonFly 21- 4 succeeded in a flight

A thrust increased, and a flight was stable.
Manoeuverability is good, too.
A thrust is not yet enough.


トンボ型羽ばたき機:DragonFly 21- 4 Second Good Test Flight (4 min 49 sec)
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Old May 06, 2012, 07:57 AM
DIY Mania from Taiwan
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That is seriousely sweet,it looks so real in flight
first scaled flapping dragonfly in the history?
congratulations Sensei
best regards
Sam
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