Scratch Build 1400mm P-39

[BoilerScale]

The model is pretty much done now. I modeled the canopy, prop assembly, and finished the wings up. Now all that's left is to work on the internal structure, flaps, ailerons, wing attachment, and landing gear. My first prototype will be a belly lander then I'll add retracts once I get the kinks worked out. Just to test my work and see how big this thing will be, I rough cut some pieces and formed them. Helped me see what I need to change, especially with the tail section (please excuse my horrible master series folding gonna work on them when I get the P-47).

 

[BoilerScale]

Got crackin on an internal structure mock up, first full prototype build will start this weekend. Might do FEA on the structure just for fun but that'll be for another day. I'm just focused on getting this done first and then starting a second plane for Flite Fest (hint: it'll be some kind of Vietnam era jet, also @Splinter189 any Cold War Jets coming down the line?).

 

[Splinter189]

Got crackin on an internal structure mock up, first full prototype build will start this weekend. Might do FEA on the structure just for fun but that'll be for another day. I'm just focused on getting this done first and then starting a second plane for Flite Fest (hint: it'll be some kind of Vietnam era jet, also @Splinter189 any Cold War Jets coming down the line?).

View attachment 157876

Actually yes, Won't be long

 

[BoilerScale]

Actually yes, Won't be long

Awesome, can't wait!

 

[BoilerScale]

Layout of my prototype so far, so far everything fits nicely, even with my hack cutting job. Tail section to be re cut with new locator holes for horizontal and vertical stab.

 

[BoilerScale]

Moving along, got the tail structure completed and attached the very front.

 

[BoilerScale]

Got the lower part of the wing assembled with the spar and finished sheeting the center section of the fuselage. Also started experimenting with a top hatch for electronics and battery. Wing is also being designed to be removable so I can fit the plane in my focus. Here's a test fit and holy crap it's massive.

 

[DAWNSIGHT4]

That is going to be one slick bird! Do you plan on making downloadable plans?

 

[BoilerScale]

That is going to be one slick bird! Do you plan on making downloadable plans?

Thanks! Yep planning to release pdf plans and files in a vector drawing format if you want to lasercut.

 

[BoilerScale]

Fuselage and tail complete! Plan on finishing the wing this week and getting the electronics installed. Will make a more detailed post about the wing connection method too. It's exciting to see this thing come together.

 

[BoilerScale]

Unfortunately due to coronavirus, my internship got ended early. Since I suddenly have to move, the airacobra is going to have to go on the backburner for a bit until I return to school. I'm bringing a bunch of RC stuff with me when I go home for these next few months, and with all this new unemployment freetime, I'll probably start on some other design. It's just the airacobra would be too much of a hassle to lug across the country with all my other stuff. As far as what to make in the meantime, not sure yet but I have some 55mm edf's and will probably do something with those.