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Old Mar 01, 2012, 03:11 PM
ich bauen groß modell flugzeug
Keenan smith's Avatar
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Chochmah my email is e9rudebouy@hotmail.co.uk
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Old Mar 01, 2012, 03:12 PM
ich bauen groß modell flugzeug
Keenan smith's Avatar
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awsome plane!

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Old Mar 01, 2012, 03:15 PM
HappyGoLucky
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Quote:
Originally Posted by k.smith459 View Post
Chochmah my email is e9rudebouy@hotmail.co.uk
Send.
And, btw, you can use the Impeller Component in the File for the plans of the A225. The shroud and the tabs have the exact messurements of the ChangeSun 90mm 12 Blade.

Edit:

And if you got Realflight I could also send you the virtual model I made to help me figure out the CG / size of the control surfaces, wingtwist etc.

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Old Mar 01, 2012, 03:16 PM
ich bauen groß modell flugzeug
Keenan smith's Avatar
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ok
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Old Mar 01, 2012, 03:28 PM
ich bauen groß modell flugzeug
Keenan smith's Avatar
United Kingdom, London
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i saved the side withall formers then i mirrored and dissected it to get a complete structure and and all formers too! im a little worried about your amount of upthrust

BTW could you teach me to use sketch up properly as i only have the basics just about down

sent you an E-mail

Also thanks for drawing up the changesun fan i save it
i may use sketchup to design my Ant-225 but i need to learn how to use it properley!
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Old Mar 01, 2012, 03:30 PM
ich bauen groß modell flugzeug
Keenan smith's Avatar
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i have the 2nd to latest realflight and im getting the latest realflght in a week so send me the file as it would be real useful

Keenan
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Old Mar 01, 2012, 03:36 PM
HappyGoLucky
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Quote:
Originally Posted by k.smith459 View Post
i saved the side withall formers then i mirrored and dissected it to get a complete structure and and all formers too! im a little worried about your amount of upthrust

BTW could you teach me to use sketch up properly as i only have the basics just about down

sent you an E-mail
The hull structure in the file is a complete plane, it's just partially hidden, unhide groupwise and you'll get the whole thing. Well, you have a point with the upthrust, it's 5 degrees and it is needed (I believe) at high speeds to compensate for the short fulcrum of the elevator. At low speeds it really is a problem, especially since the thrustline is far below the cg and the wings. Makes the plane do backflips if you're not carefull.

I don't know much more than the basics of sketchup myself. I use it to get bulkheads from the 3D model because it was easy to learn but it has it's limitations. Use Blender for 3D modeling.

I'll send you the model. Report back how you cope with the challenging characteristics. I can land it a below 30km/h.

p.S.: This is not made with the latest RF Version, I bought 4.5 used. Should import into your newer version without problems.
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Old Mar 01, 2012, 03:44 PM
ich bauen groß modell flugzeug
Keenan smith's Avatar
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Chochmah my suggestion would be to add a thrust vector nozzle or paddle on the pitch to help with stability! man its pitchy when slow!
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Old Mar 01, 2012, 03:48 PM
HappyGoLucky
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Originally Posted by k.smith459 View Post
Chochmah my suggestion would be to add a thrust vector nozzle or paddle on the pitch to help with stability! man its pitchy when slow!
Well, it's got 0% Expo. A Thrust Nozzle it to complicated, this is just a little quick & easy project build around two servos and an EDF. Besides, the real thing did not have one either.
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Old Mar 01, 2012, 04:00 PM
ich bauen groß modell flugzeug
Keenan smith's Avatar
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how about a small see through plastic paddle coupled up to pitch (1 servo quick and easy) and it would greatly improve the flight characteristics
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Old Mar 01, 2012, 04:03 PM
HappyGoLucky
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Originally Posted by k.smith459 View Post
how about a small see through plastic paddle coupled up to pitch (1 servo quick and easy) and it would greatly improve the flight characteristics
Well, add one on the model and see if it works. If it does please send the modified model back to me, thanks.
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Old Mar 01, 2012, 04:07 PM
ich bauen groß modell flugzeug
Keenan smith's Avatar
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ill see what i can do with my basic skills
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Old Mar 02, 2012, 06:06 PM
Up-Out-&-Gone
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Originally Posted by k.smith459 View Post
ill see what i can do with my basic skills
I think your WAY beyond basic skills K!
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Old Mar 02, 2012, 06:08 PM
ich bauen groß modell flugzeug
Keenan smith's Avatar
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Lols
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Old Mar 02, 2012, 06:11 PM
ich bauen groß modell flugzeug
Keenan smith's Avatar
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hey DD lets talk on chat
http://www.rcgroups.com/forums/chat.php
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