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Sandwich panel fin construction
(11-29-08) updated
If anyone is interested in learning how to build composite sandwich panel fin sets I will try to document this procedure for you. Below are two photos showing the materials used to build the fin and the the fin once it's finished. Since I am new to this group I am uncertain as what is wanted and what is not for the building techniques section of this forum. Since all my photo documentation is in high res, I have to learn how to post these images to the site so bare with me will I learn how to do this. Just let me know if you find this of interest and I will post more. Thanks, Mick Kelly I have added a few more photos showing more details on the construction of the sandwich panel fin set. If you have any questions feel free to ask. I will be glad to go into full detail about any or all of the process. http://farm4.static.flickr.com/3226...ea6b40e09_b.jpg This photo is of the core components consisting of solid carbon bar stock. I made the bar stock using my compression mold. The foam is called Divinycell. It is a medium density foam with a 100 psi compression strength rating. http://farm4.static.flickr.com/3174...7a8a98e74_b.jpg This is the finished product utilizing sandwich panel construction techniques. http://farm4.static.flickr.com/3146...670903d7a_b.jpg This photo shows how the bar stock is angle cut before adhering to the core. http://farm4.static.flickr.com/3062...868a6cba6_b.jpg This photo shows the carbon and the core adhered together to make the internal framing core. http://farm4.static.flickr.com/3221...a939a083f_b.jpg This photo shows the skins being cut for the frames. The excess will be trimmed after the skins are laid up and cured but before the final heat cure. http://farm4.static.flickr.com/3220...35a873acb_b.jpg This photo shows the bottom skins and also the bottom half of the compression mold. http://farm4.static.flickr.com/3171...10526c093_o.jpg Tis photo shows the assembled compression mold and being vacuum down. Notice the amount of out gassing along with the removal of excess resin. http://farm4.static.flickr.com/3162...26056eb47_b.jpg This photo i the four fins after the have been beveled on the leading and trailing edge. Along with the high temperature adhesive on the beveled edges. When the fin is in this state is when the final heat cure takes place. Mick Last edited by Mick Kelly : 11-29-2008 at 07:41 PM. |
#2
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yousah, I have added a few more photos of the process for building the fin set. If you have any question on the technique used let me know and I will be more than happy to answer any of your questions.
Mick |
#3
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Looks awesome..Just curious, from start to finish, how long did this take you?
__________________
Jon SAM #0396 BAR 02/07 NAR 86940 KF4GUL Aim high, fly straight! |
#4
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Jon,
It takes a weekend to make a set of sandwich composite fins or solid composite fins. Mick |
#5
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Mick,
Beautiful work!!! Now if Chuck would just finish that darn ARCAS! Glad to see you posting here! -Eric- |
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Eric I agree, I wish Chuck would at least finish that project before he takes his break from rocketry.
Mick |
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Great job, I just want a work space that large and spacious. I wonder how much stuff I could get on it before it was totally cluttered.
Joe Last edited by GIJoe : 12-01-2008 at 11:22 PM. Reason: fat fingers |
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