3D/Foamboard High Performance F-16 Discussion and Design

[L Edge]

But I want it to look sweet as well as fly nice!😂 If I want to go 100% speed than I will do something more like @telnar1236 did..

If you read telnar1236 comments (item 99) below, he basically said the same thing I said, loose the ordinance to get top speed. Secondly, it interferes with flight stability and he found the tip helped. Mine I flew, it hindered it. See what happens when you design with a different wing. My elevons were the result where the interference of wing and tail airflow.

By the way, now knowing my problem, I fly the F-16 (purchased in 2009) once in awhile because it has a thrust vectoring nozzle and gives a show at the flying field. It would go into a stall in only a left climbing sharp turn only. So the is not used in presentation.

What I am trying to do (also, telnar, quorneng, piotrsko) is to give you their years of experience of what works, doesn't work. You will notice many areas of design is presented by all. Otherwise, you will waste time and effort repeating what they have presented. You FT guys are the designers of the future.

 

[telnar1236]

Yeah, I was planing on having them slid in and either screw or click in place, but have them removable for sure

Tolerances can be tough with sliding stuff sometimes. Screws work well, but it's pretty important to avoid countersunk heads since they cause failures across the layer lines - my rule of thumb is 0.2mm less than the screw major diameter for holes where I want to use self-tapping screws and both 2mm and 3mm sizes tend to work well and are fairly cheap. If you want to do a spring-loaded mechanism, you can also buy mechanical pencil/pen springs pretty cheap in 100 packs.

 

[Houndpup Rc]

Tolerances can be tough with sliding stuff sometimes. Screws work well, but it's pretty important to avoid countersunk heads since they cause failures across the layer lines - my rule of thumb is 0.2mm less than the screw major diameter for holes where I want to use self-tapping screws and both 2mm and 3mm sizes tend to work well and are fairly cheap. If you want to do a spring-loaded mechanism, you can also buy mechanical pencil/pen springs pretty cheap in 100 packs.

Thanks for the ideas! (Yeah, those springs seem to be a popular choice.) Also some 5x5x5 magnets can be a good upgrade.

 

[Houndpup Rc]

Getting some more progress!

 

[Mr Man]

Wow, 😮 that looks amazing!

 

[telnar1236]

Getting some more progress!
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Looking good! Is there going to be a wing spar or just the 3D printed structure?

 

[Houndpup Rc]

Looking good! Is there going to be a wing spar or just the 3D printed structure?

I am thinking of using a 6mm CF spar running through the wing to not only add strength, but to also help with alignment.

 

[Houndpup Rc]

Wow, 😮 that looks amazing!

Looking good! Is there going to be a wing spar or just the 3D printed structure?

Thanks! And suggestions?

 

[telnar1236]

I am thinking of using a 6mm CF spar running through the wing to not only add strength, but to also help with alignment.

Seems reasonable - two spars can sometimes help with any torsion on the wing too.

Thanks! And suggestions?

You might already be doing this, but now that it's pretty far along in the design process, it can be good to start slicing parts and adding up all the weights of both the printed parts and off the shelf components in a spreadsheet. That way you can get an idea if your weight will be acceptable which can sometimes be a challenge with 3D printed planes

 

[Houndpup Rc]

You might already be doing this, but now that it's pretty far along in the design process, it can be good to start slicing parts and adding up all the weights of both the printed parts and off the shelf components in a spreadsheet. That way you can get an idea if your weight will be acceptable which can sometimes be a challenge with 3D printed planes

Good idea