New project : La-9 (rc warbird) for 3D printing

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Chris_G
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Re: New project : La-9 (rc warbird) for 3D printing

Postby Chris_G » Thu Nov 19, 2020 2:05 pm

Great job,
I love it !
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rmavrichev
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Re: New project : La-9 (rc warbird) for 3D printing

Postby rmavrichev » Mon Nov 23, 2020 3:10 pm

Nice work!
HardRock
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Re: New project : La-9 (rc warbird) for 3D printing

Postby HardRock » Sun Jan 10, 2021 6:58 pm

It flies :)
980mm wingspan. In fact this assembly was not made for flight, but just for see 3d model shape =)
There are number of problems in assembled airplane like printing issues and big elevator backlash about 10-15 degree

Aerodynamic was calculated correctly and confirmed in worst conditions: overweight about 50% (takeoff weight 1.5kg instead of 1kg) - 107g/dm^2
This is very heavy because soviet warbirds has small wings and it's very hard to make them fly well in model scale. This need proper aerodynamic analysis and it's was done before 3D modelling.

At the end I lost control because I have flew wihout gloves this time and after a minute I could no feel my finger anymore. Russian winter... :lol:
Airplane is OK, only one crack on fuselage (delamination of layers on printing issue sector)

phpBB [video]


To be continued...
superpeace
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Re: New project : La-9 (rc warbird) for 3D printing

Postby superpeace » Mon Jan 11, 2021 9:42 am

wow thank you for making great plane by using freecad!
This is awesome!
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mhalil
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Re: New project : La-9 (rc warbird) for 3D printing

Postby mhalil » Mon Jan 11, 2021 7:32 pm

Congratulations.
Greate job.
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chrisb
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Re: New project : La-9 (rc warbird) for 3D printing

Postby chrisb » Tue Jan 12, 2021 1:48 am

:+1:
You need at least FreeCAD 0.19.23300 to edit my current sketches.
A Sketcher Lecture with in-depth information is available in English, auf Deutsch, en français, en español.
jmaustpc
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Re: New project : La-9 (rc warbird) for 3D printing

Postby jmaustpc » Thu Jan 14, 2021 11:40 am

HardRock wrote:
Sun Jan 10, 2021 6:58 pm
It flies
Seriously impressive! Well done. :)
HardRock wrote:
Sun Jan 10, 2021 6:58 pm
At the end I lost control because I have flew wihout gloves this time and after a minute I could no feel my finger anymore. Russian winter...
I had to laugh at that! I am sitting here in summer the Australian outback with my air conditioner going! :lol:
HardRock
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Re: New project : La-9 (rc warbird) for 3D printing

Postby HardRock » Thu Jan 14, 2021 6:10 pm

jmaustpc wrote:
Thu Jan 14, 2021 11:40 am
I am sitting here in summer the Australian outback with my air conditioner going! :lol:
Lucky man! :lol:


Little update - i want to complete 1:10 scale version for 3d printing.
Here is flap and aileron servo trays with their covers. Also slot for small standard retracts.

Image
jmaustpc
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Re: New project : La-9 (rc warbird) for 3D printing

Postby jmaustpc » Sat Jan 16, 2021 7:57 am

HardRock wrote:
Thu Jan 14, 2021 6:10 pm
jmaustpc wrote: ↑
14 Jan 2021, 22:40
I am sitting here in summer the Australian outback with my air conditioner going! :lol:

Lucky man!
My children said to say the same as you, but in reverse, they think you are so lucky because you could make a snowman with all that snow! :D

Jim