composite wing controls
11-19-2003 | 08:03 AM
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From: Brantford, ON, CANADA
RE: composite wing controls
There are variations but this is the basic procedure. The wing is molded complete with the ailerons. After removal from the mold the aileron ends and the bottom skin hinge line is cut. The top skin is not cut and acts as the aileron hinge. There is usually a sub spar in front of and behind the hinge line, far enough away to allow the top skin to flex. These spars and torque rods if required, are molded in before the wing halves (Top and bottom) are joined.
Ed S
Ed S
11-19-2003 | 11:37 AM
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From: Anchorage,
AK
RE: composite wing controls
We had a discussion of this last week, and I kept the image I made for that one, so here it is again. Ed is right, and this image just shows the layup.
11-20-2003 | 07:27 AM
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From: Izegem, BELGIUM
RE: composite wing controls
Hi all,
I tried the technique with a strip of tear-off tissue, and put 80 g/sqm glass over it. I scratched the glass after full setting of the resin and had a very usable hinge! I cannot tell more about how long it lasts etc.
Marcus Koch used this technique on some high performance electric birds. If I recall correctly, he also mentioned that a strip of kevlar can be used instead of the tear-off tissue. The kevlar will certainly be the more expensive option. Mr Koch did beautiful work on making full-molded planes AND documenting the whole process.
You will certainly find more about it when you scan the forums for "Eisvogel" and "M. Koch".
Best regards,
Kris
I tried the technique with a strip of tear-off tissue, and put 80 g/sqm glass over it. I scratched the glass after full setting of the resin and had a very usable hinge! I cannot tell more about how long it lasts etc.
Marcus Koch used this technique on some high performance electric birds. If I recall correctly, he also mentioned that a strip of kevlar can be used instead of the tear-off tissue. The kevlar will certainly be the more expensive option. Mr Koch did beautiful work on making full-molded planes AND documenting the whole process.
You will certainly find more about it when you scan the forums for "Eisvogel" and "M. Koch".
Best regards,
Kris
11-21-2003 | 10:02 AM
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From: Schwarzenfeld, GERMANY
RE: composite wing controls
Hi Naji!
Have a look at my thread at ezonemag.com > Discussion > High performance > Building full-molded F5B-models Eisvogel and Raketenwurm! There you´ll find the answers to your question!
I normally use a about 2,5 cm wide strip of tear-off tissue for all my hinges! This works very well and lasts for sure longer than the plane if you cut the glass carefully an don´t damage the tear off tissue! Some other pilots use a strip of Aramid but i haven´t tried it yet!
@Kris
Thanks for the flowers for my thread about building high performance planes! It´s nice to hear that a lot of people are interesed in my work and i hope i was able to help some of you with my thread in building such planes!
Ciao, Marcus
Have a look at my thread at ezonemag.com > Discussion > High performance > Building full-molded F5B-models Eisvogel and Raketenwurm! There you´ll find the answers to your question!
I normally use a about 2,5 cm wide strip of tear-off tissue for all my hinges! This works very well and lasts for sure longer than the plane if you cut the glass carefully an don´t damage the tear off tissue! Some other pilots use a strip of Aramid but i haven´t tried it yet!
@Kris
Thanks for the flowers for my thread about building high performance planes! It´s nice to hear that a lot of people are interesed in my work and i hope i was able to help some of you with my thread in building such planes!
Ciao, Marcus
