A delta that can fly very slow. It can carry some weight.
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The delta uses KF-m 3 airfoil and it is optimized to fly slow while carrying a payload. It flights for 40 minutes with 2 2200mAh LiPo batteries. A video of the delta flying.
I got a lot of help in the RCGroups forum and now I need to create a thread for this plane. Pictures for the most recent version:
This is an earlier prototype, the one I made before the most recent.
And here I am, holding the previous prototype:
I am trying a KFm-9 airfoil. Here are the instructions for cutting it:
http://www.rcgroups.com/forums/showpost.php?p=33914543&postcount=7
It is looking good :-)
Hello there.
We finally put the information that is necessary to build this delta in this thread we started in the rcgroups forum.
Now we'll build a delta and document the process to make the build easier. We'll update this log witch each step.
So far I have been doing the deltas by hand but now that I've created enough prototypes we need to start using machines.
Here are the images with the dimensions of the delta.
Wing length is 83 cm.
And here is how the KFm-3 airfoil is done. We'll add more instructions about this later, but if you're impatient you'll be able to use these images to start your delta.
Gorilla glue is used to save weight. Hot glue weights a lot more.
We sand the leading edge, it is cut at 45° and then smoothed.
This is what the finished airfoil looks like.
Nelson Castillo
