RC FS-5.24 Flying Saucer by ldsanders2807
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KX-5.24------ 002.jpg
This project started based on my desire to create my own original remote control airplane from drawing, to cutting the parts on a cnc machine that I built from a kit, assembling the parts, and then flying the finished product.  There were so many normal type airplanes out there, that I decided that I would do something different.  I decided on a saucer shaped plane.  The project was such a great challenge from the beginning.  First, I had to learn to use a CAD program.  I started with a program from Google called SketchUp.  It was a painful experience, but it's a great program to learn CAD drawing on, and, it's free.  After some time, I had a drawing created that included over 50 pieces.  The next step was to build the router based cnc machine called a PhlatPrinter.  Not as painful as CAD, but still very challenging.  The group that created the PhlatPrinter also included the script that would create the gcode file that the cnc machine need to actually cut the parts.

Specs:

24" diameter disc
AUW = about 16oz
A $20 dollar motor/ESC combo (B2212/13 and 18 amp ESC) from RCHotDeals.com is a perfect match for this plane.  About 110 watts is what you’re looking for.  I prefer at least a 1:1 thrust to weight ratio.
APC 8x4.3 (or smaller) prop
1320 to 1800 mah 3 cell lipo
2 servos (about 15 oz torque) in elevon configuration (like TowerPro 9 gram servos)
3 mm carbon fiber tube/rods

Build difficulty:
Construction is normal.

Covering foam with heat shrink film will make you sweat.  But, the end result is worth it.
 
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Step 1: The Cad File

SketchUpFileForDisc.jpg
SketchUpFileForRibs.jpg
As I noted, the plane was designed in SketchUp.  Here are the two files that contain all the plane parts.  Being a router based cnc machine, it's necessary to tell the machine which direction the router should move depending on whether it's an inside or outside cut.  The orange lines are outside cuts, the blue lines are inside cuts, and the pink are partial depth cuts.

The SketchUp file (along with hundreds of other planes) is available on the PhlatBoyz site.  ( http://www.phlatforum.com/index.php )
Dany2345 says: May 3, 2013. 6:42 PM
very good.
you could add a small hd camera to it to take videos. You could try the "808 key chain camera"
there is two named like it. one is $10 usd. The other one is $50 usd. The difference is big.
I have herd it's good. i am planing to get it myself.
i first got informed of it from the following link.
https://www.youtube.com/watch?v=vHr2ySJo7mc&list=UUXIEKfybqNoxxSpHYT_RVxQ&index=1
dboyz says: Oct 29, 2012. 9:52 PM
nice.... :)
itstsui says: Oct 24, 2012. 1:36 PM
I can't seem to find the cad files for this plane on that site. Could you possibly put them up elsewhere?
ldsanders2807 (author) says: Oct 24, 2012. 4:25 PM
Here is the link to the site. You have to register to be able to view the files.

http://www.phlatforum.com/viewtopic.php?f=37&t=718
nelbmahs says: Sep 15, 2012. 6:10 PM
I like the geobat design, good job! needs a video!
ldsanders2807 (author) says: Sep 15, 2012. 8:52 PM
I like the geobat as well. I added a video to the last step.
montrealjones says: Sep 27, 2012. 6:10 AM
i love it 
MezMeb says: Sep 16, 2012. 6:12 AM
Cool, good job!
AndyGadget says: Sep 15, 2012. 8:24 AM
 
Neat build, but it looks a bit underpowered with the motor you're using.  What's the AUW?  A full list of the electronics parts you've used would be good, and what it REALLY needs is a flight video.
Kiteman says: Sep 15, 2012. 11:16 AM
Definitely needs a video!
ldsanders2807 (author) says: Sep 15, 2012. 5:38 PM
Video added. It has a 100+ watt motor and has about 1:1 power to weight ratio.
Kiteman says: Sep 16, 2012. 2:16 AM
That is very nice. Congratulations.
AndyGadget says: Sep 16, 2012. 12:33 AM
 
That video makes all the difference - I stand corrected!
That is a really good flyer.
meanpc says: Sep 15, 2012. 6:37 PM
Awesome design! Your aircraft looks very stable, even at low speed. How certain were you that this thing would fly during the design phase? Do you have aeronautical engineering experience?
ldsanders2807 (author) says: Sep 15, 2012. 8:54 PM
As the name kind of implies, (KX-5), it is the 5th iteration of the overall project. It went thru some changes as time went on and has ended up as a very stable design. I actually have designed, built and flown an 18 inch (8 oz) , 45 inch (4 lbs.), and a 66 inch version that is over 7 feet long and weighs 21 pounds. My experience in planes is driven by my interest in the design process and the hobby.
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