Three Piece Wing

[Jimbello]

I am wondering how a three piece wing is constructed and assembled. Is it done with two wing joiner assemblies between the three parts, and without a joiner in the centre?

Jim.

[Zor]

I am wondering how a three piece wing is constructed and assembled. Is it done with two wing joiner assemblies between the three parts, and without a joiner in the centre?

Jim.

Hi Jim,

Yes, the two outer panels are joined to the center parts with the same techniques as two wings joined at the center.

Could be that the joints might be so that the outer panels are detachable like two wings joined to a fuselage.

In the center you would have some way of installing the wing assembly to the fuselage.

If you browse the forum, paricularly the Builders Workshop and look at build logs you will see many examples of typical methods.

Good luck,

Zor

[coosbaylumber]

Perhaps some termonology needs to be straightened up.

Onna west coast of USA, we talk of the three piece wing as being the center section is already built in, hard, to the fuselage. Much as many of the present light planes do for past 50 years.

For old-timer aircraft, like when they used to mount the wing on a pylon, the center section of the wing was considered to be the third portion. A Lanzo Bomber is a good example then. That center section is dead flat across.

Which system you thinkng of now?

Wm.

[Zor]

Perhaps some termonology needs to be straightened up.

Perhaps ? . . . If you did not think so, you woould not have writen the sentence.

The thing I wonder is . . . are you referring to my terminology or to jimbello or to both of us ?

Onna west coast of USA, we talk of the three piece wing as being the center section is already built in, hard, to the fuselage.

I suppose you have in mind a Studa or a Corsair or an airplane with wings folding some distance away from the fuselage.

Much as many of the present light planes do for past 50 years.

Do you mean airplanes like Cessnas, Pipers, Mooneys and so on that have two wing panels attached to the fuselage and no center section ?

For old-timer aircraft, like when they used to mount the wing on a pylon, the center section of the wing was considered to be the third portion. A Lanzo Bomber is a good example then. That center section is dead flat across.

So, the center section was also referred to as "the third portion" ?


Which system you thinkng of now?

Wm.

Since, I suppose, you are responding to the thread originator jimbello I imagine your question is addressed to him.

jimbello is looking for how a three piece wing is constructed and assembled.

Cheers,

Zor

[Jimbello]

[QUOTE=Zor]Hi Jim,

Yes, the two outer panels are joined to the center parts with the same techniques as two wings joined at the center.

Could be that the joints might be so that the outer panels are detachable like two wings joined to a fuselage.

In the center you would have some way of installing the wing assembly to the fuselage.

If you browse the forum, paricularly the Builders Workshop and look at build logs you will see many examples of typical methods.

Good luck,

Zor,

Yes, that is what I assumed. I have been scanning the "Builders Workshop", but haven't come accross a build with this system yet. However, it is clear enough from your description. I am imagining, reinforcing (wood?) for wing retaining bolts etc. could be simply placed in the core before bagging. Servo wire exits and runs also could be provided before bagging.

I have to admit, I am puzzled by coosbaylumber's response also???

Jim.

[Al Offt]

I interpreted Coosbaylumber's response as the center section of the wing is permanently attached to the fuselage with the two outer panels joined to the center section. Take a look at the picture of the Big Brother sailplane, third one down on http://www.extremeaerotech.com/en/plans/gliders.php The wing's center section has to be permanently attached because it has to hold the twin booms.

Alan

[EJWash1]

I am imagining, reinforcing (wood?) for wing retaining bolts etc. could be simply placed in the core before bagging.
Sounds like you're building a composite glider? If so, you may want to check out the glider and composite forums.

EJWash