Hi guys!
I have already designed, printed and crashed two planes from PLA and PETG many times.
Every unsuccessful landing ends in failure. I have to print for many hours.
My EXTRA300 model without glue turned out to be very technological for replacing broken parts, but breakdowns still happen often.
I decided to make the plane smaller and lighter. A 1:15 scale allows you to make planes with a flight weight of less than 250 grams. My first model on this scale is the LA5 FN. La-5 is a Soviet single-engine fighter created under the leadership of S. A. Lavochkin in 1942. The aircraft was a single-seat monoplane with a solid wood structure with retractable landing gear and a closed cockpit. The original name is LaGG-5.
Two wings are made for this model. One completely made of foam, cut with a hot string, the other wing printed from PLA.
In the first flight I used a lightweight foam wing, it weighs 35 grams along with a servo.

First flight. An unsuccessful launch could fail for a heavier model, but this aircraft is immediately ready to restart. After trimming, the plane flies well and is controlled.

3Dprint LA5 650mm 210g (2 min 52 sec)

What nozzle size/ wall thickness/layer height did you use for this print? Standard 0.4/0.4/0.15? or something different?

0.4/0.25

Lavochkin?

Always good!

Will follow your build closely......

Greetings:Robin

wow! nice plane!
Can you post your motor/esc setup?
Waiting for some more infos

motor 1808-2100kv
esc 10a
prop 6x3.5
2 servo 5g

full time for printing the fuselage about 10 hours

Will you post the stl files?

Mister Victor Bakharev,

I have the same guestion about the files.
What are your plans?
Are you going to post them somewhere?

Here is why I am interested in your files: https://www.modelbouwforum.nl/thread....254273/page-5

As you can see,I am designing/printing the Lavochkin La-7! (together with Tim)


Greetings:Robin

I want more information, especially about where I can get the STL files. This small model looks like a lot of fun.

My other 3D printed airplanes are all too large, none of them are light, they all require intense attention to fly them successfully, and a crash like the one in the video would have resulted in a pile of scrap plastic.

Thank you for your interest in my work. After some corrections, I plan to sell files and instructions.

I changed the battery load, now I do not need to remove the wing.
I am going to make two design options.
The first option will be with a wing and a stabilizer made of foam. This option is easier and more resistant to destruction.
The second option will be fully printed from PLA.

I have a 3D printer that prints 380mm along the Z axis, and therefore the design has only one joint, but for greater compatibility, I plan to make a maximum size of Z 200mm. This will require a little rework.

Nice!

Thank you for the drawing.It really is a Lavochkin La-5!
Good luck with the next proces Victor.
Ivan Kozhedub would be proud.......

Greetings:Robin

Originally Posted by 3 DDD

Nice!

Thank you for the drawing.It really is a Lavochkin La-5!
Good luck with the next proces Victor.
Ivan Kozhedub would be proud.......

Greetings:Robin

made a design for Z = 200mm.
In addition to the wings from the foam, I made wing files for the PLA.
the fuselage consists of 4 parts and a wing of 3 +2 parts.

Nice work!

hybrid wing PLA structure
new wing 740mm -80g the shell will be made of 3mm XPS

full 3d print wing 740mm - 130g

full 3d print wing 650mm - 90g