Looking for Ideas for 3D Printed Jets

[Houndpup Rc]

You never realize how much you needed a 3D printer till you get one

Right!?

 

[Houndpup Rc]

Now that the sport jet is done, it's immediately on to the boundary layer ingesting flying wing which I originally planned to build first. The left wing is already printed View attachment 254343
This design will also be LW-PLA but with much lighter construction than the sport jet since it's got a similar wingspan but will only be powered by a 3s 50mm EDF

Don't you use Fusion360 for these? (I forget..)

 

[telnar1236]

Don't you use Fusion360 for these? (I forget..)

Yeah, fusion360 is what I tend to use. But pretty much any full featured CAD program should work equally well.

 

[Houndpup Rc]

Yeah, fusion360 is what I tend to use. But pretty much any full featured CAD program should work equally well.

I almost have fusion working on linux!

 

[Mr Man]

Cool! (I will Beta build that!..If you want..) Man! I didn't know you could just build it as solid and add the infill in the slicer! 😆

Sounds like a cool plane, we definitely need more people out here 3D printing and coming out with cool designs

Here is how it looks so far... Still have to do internal fuselage stuff though.

 

[telnar1236]

Here is how it looks so far... Still have to do internal fuselage stuff though.

That's a good-looking plane. Those are quite the control horns

 

[Mr Man]

That's a good-looking plane. Those are quite the control horns

They're the same size as the FT ones, just shorter, (they go in just like FT's too, so I don't have to stick to that design, I'll probably go with something with less drag)

 

[telnar1236]

Flew the ABS version of the sport jet today. I was worried the warping inherent to ABS might change the wing airfoil enough to cause problems, but it actually went 1 mph faster than the LW-PLA version, and this time without any wind to help it, hitting 105 mph.

I think the final change I want to make is to add some protectors for the aileron servos since I broke off one of the control horns belly landing.

 

[Mr Man]

Glad it flew well! (and fast 😏)

 

[telnar1236]

They're the same size as the FT ones, just shorter, (they go in just like FT's too, so I don't have to stick to that design, I'll probably go with something with less drag)

What I've found, with my designs at least, is that the control horns and linkages contribute minimally to drag. I ran CFD of my 50mm super-duper sabre with and without and they only added a very small amount which would probably not even be measurable in terms of impact on top speed

 

[Houndpup Rc]

Also, a cool thing with 3D printed planes is, that you can just build the control horn into the aileron!

 

[Mr Man]

Also, a cool thing with 3D printed planes is, that you can just build the control horn into the aileron!

Yup, But I decided not to for ease of printing. (also because my printer isn't very good 😆😆)

 

[Houndpup Rc]

Yup, But I decided not to for ease of printing. (also because my printer isn't very good 😆😆)

Ah okay

 

[Houndpup Rc]

On the interceptor the person just put it at the very edge so it wasn't actually harder to print.

 

[Mr Man]

On the interceptor the person just put it at the very edge so it wasn't actually harder to print.

Yup, servo positioning made that hard for me😆

 

[Houndpup Rc]

Like right here:

 

[Houndpup Rc]

Yup, servo positioning made that hard for me😆

True😂👍(Unless you flipped the servo 180.....)

 

[Mr Man]

True😂👍(Unless you flipped the servo 180.....)

It's still be in the middle of the servo 😆😆

 

[telnar1236]

Separating out the control horns also lets you use different levels of infill more easily. All of mine are separate and use a triangular cutout in the aileron

 

[Houndpup Rc]

Separating out the control horns also lets you use different levels of infill more easily. All of mine are separate and use a triangular cutout in the aileron

In the interceptor you just print it so the control horn is on the bed and set the bottom layers upto like 7 and you get a solid control horn but the infill can still be 4%