Single Tube Fuselage idea

[Sockmonkey]

Top side bracing struts cost you lift and create more drag than bottom struts though.

 

[erkki67]

And a cantilever wing?

 

[Sockmonkey]

And a cantilever wing?

Would be heavier.

 

[erkki67]

Yes but less drag too.

 

[Sockmonkey]

Not if the weight saved by using struts lowers the induced drag to less than what the cantilever wing would give you.

 

[saini flyer]

Not if the weight saved by using struts lowers the induced drag to less than what the cantilever wing would give you.

How does Chip do this with his Merlin lite cantilever wing?

Merlin Lite – Aeromarine-LSA

 

[WonderousMountain]

Chip used money.

 

[erkki67]

And the knowledge of techproaviation

 

[aripilot]

Techproaviation from Czech designed and is producing parts for Merlin and Merlin Lite. Many airplanes which have very nice flying qualities are designed and parts built by Techproaviation and then sold by different companies as their own kits or Ready To Fly airplanes.

 

[meglin1]

With your permission, I will present a flying project of the Dbai aircraft, Kharkiv. My friend made it on the model of our two-seat X-32 aircraft. With the Rotax-582 engine, it performs most of the complex aerobatics.

 

[Bille Floyd]

Not if the weight saved by using struts lowers the induced drag to less than what the cantilever wing would give you.

My friend told me near the same thing, last night ; he is the guy
who drew up this idea for my Exxtacy glider ,(below).



Bille

 

[rotax618]

Not entirely a single tube but nevertheless a good idea for a lightweight single seater.

 

[rotax618]

 

[rotax618]

 

[fastestairwings]

My suggestion is to use professinal blueprints of aerobatic airplanes. There is an airplane with a great flying characteristics and at the same time with a high level of durability - Zivko Edge 540.

I've found an option to outline blueprints here: Zivko Edge 540 Clipart - Download Aircraft Clipart Images and Blueprints in PNG, PSD
Or you can use free ones from this source: https://www.f3m.com/spain/3view/Imagenes/fai edge 540.jpg

 

[erkki67]

My suggestion is to use professinal blueprints of aerobatic airplanes. There is an airplane with a great flying characteristics and at the same time with a high level of durability - Zivko Edge 540.

I've found an option to outline blueprints here: Zivko Edge 540 Clipart - Download Aircraft Clipart Images and Blueprints in PNG, PSD
Or you can use free ones from this source: https://www.f3m.com/spain/3view/Imagenes/fai edge 540.jpg

And what does have to do with the single tube idea, please explain !

 

[erkki67]

A quick update...

I shortened the fuselage a little to keep the gear from interfering with the pilots feet
View attachment 89754


Higher parts count than the AP but half the weight. Either tin snips and templates or CNC would be easy enough.
View attachment 89755


The wing would be tin, I just stuck the ranger wing on to see how things line up. I'm still not sure what motor it needs.
View attachment 89757

What kind of tubing would be required to build this one, and what size and gage of gussets would be required?

 

[rotax618]

This Russia. Machine is pretty minimal and could probably be built to Pat 103.

 

[meglin1]

Самолет Junior весит 95 кг.

 

[challenger_II]

Junior plans are available. Problem is, the fiberglass sheet used for covering isn't easily sourced in the States.